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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/8.1/sys/fs/ntfs/ntfs_subr.c 184214 2008-10-23 20:26:15Z des $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/namei.h> 35 #include <sys/kernel.h> 36 #include <sys/vnode.h> 37 #include <sys/mount.h> 38 #include <sys/bio.h> 39 #include <sys/buf.h> 40 #include <sys/file.h> 41 #include <sys/malloc.h> 42 #include <sys/lock.h> 43 #include <sys/iconv.h> 44 45 /* #define NTFS_DEBUG 1 */ 46 #include <fs/ntfs/ntfs.h> 47 #include <fs/ntfs/ntfsmount.h> 48 #include <fs/ntfs/ntfs_inode.h> 49 #include <fs/ntfs/ntfs_vfsops.h> 50 #include <fs/ntfs/ntfs_subr.h> 51 #include <fs/ntfs/ntfs_compr.h> 52 #include <fs/ntfs/ntfs_ihash.h> 53 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; 281 282 error = bread(ntmp->ntm_devvp, 283 bn, ntfs_bntob(ntmp->ntm_bpmftrec), 284 NOCRED, &bp); 285 if (error) { 286 printf("ntfs_loadntnode: BREAD FAILED\n"); 287 brelse(bp); 288 goto out; 289 } 290 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec)); 291 bqrelse(bp); 292 } else { 293 struct vnode *vp; 294 295 vp = ntmp->ntm_sysvn[NTFS_MFTINO]; 296 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 297 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec), 298 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL); 299 if (error) { 300 printf("ntfs_loadntnode: ntfs_readattr failed\n"); 301 goto out; 302 } 303 } 304 305 /* Check if magic and fixups are correct */ 306 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp, 307 ntfs_bntob(ntmp->ntm_bpmftrec)); 308 if (error) { 309 printf("ntfs_loadntnode: BAD MFT RECORD %d\n", 310 (u_int32_t) ip->i_number); 311 goto out; 312 } 313 314 dprintf(("ntfs_loadntnode: load attrs for ino: %d\n",ip->i_number)); 315 off = mfrp->fr_attroff; 316 ap = (struct attr *) ((caddr_t)mfrp + off); 317 318 LIST_INIT(&ip->i_valist); 319 320 while (ap->a_hdr.a_type != -1) { 321 error = ntfs_attrtontvattr(ntmp, &nvap, ap); 322 if (error) 323 break; 324 nvap->va_ip = ip; 325 326 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list); 327 328 off += ap->a_hdr.reclen; 329 ap = (struct attr *) ((caddr_t)mfrp + off); 330 } 331 if (error) { 332 printf("ntfs_loadntnode: failed to load attr ino: %d\n", 333 ip->i_number); 334 goto out; 335 } 336 337 ip->i_mainrec = mfrp->fr_mainrec; 338 ip->i_nlink = mfrp->fr_nlink; 339 ip->i_frflag = mfrp->fr_flags; 340 341 ip->i_flag |= IN_LOADED; 342 343 out: 344 free(mfrp, M_TEMP); 345 return (error); 346 } 347 348 /* 349 * Routine locks ntnode and increase usecount, just opposite of 350 * ntfs_ntput(). 351 */ 352 int 353 ntfs_ntget(ip) 354 struct ntnode *ip; 355 { 356 dprintf(("ntfs_ntget: get ntnode %d: %p, usecount: %d\n", 357 ip->i_number, ip, ip->i_usecount)); 358 359 mtx_lock(&ip->i_interlock); 360 ip->i_usecount++; 361 lockmgr(&ip->i_lock, LK_EXCLUSIVE | LK_INTERLOCK, &ip->i_interlock); 362 363 return 0; 364 } 365 366 /* 367 * Routine search ntnode in hash, if found: lock, inc usecount and return. 368 * If not in hash allocate structure for ntnode, prefill it, lock, 369 * inc count and return. 370 * 371 * ntnode returned locked 372 */ 373 int 374 ntfs_ntlookup( 375 struct ntfsmount * ntmp, 376 ino_t ino, 377 struct ntnode ** ipp) 378 { 379 struct ntnode *ip; 380 381 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino)); 382 383 do { 384 ip = ntfs_nthashlookup(ntmp->ntm_devvp->v_rdev, ino); 385 if (ip != NULL) { 386 ntfs_ntget(ip); 387 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 388 ino, ip, ip->i_usecount)); 389 *ipp = ip; 390 return (0); 391 } 392 } while (lockmgr(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL)); 393 394 ip = malloc(sizeof(struct ntnode), M_NTFSNTNODE, 395 M_WAITOK | M_ZERO); 396 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 397 398 /* Generic initialization */ 399 ip->i_devvp = ntmp->ntm_devvp; 400 ip->i_dev = ntmp->ntm_devvp->v_rdev; 401 ip->i_number = ino; 402 ip->i_mp = ntmp; 403 404 LIST_INIT(&ip->i_fnlist); 405 VREF(ip->i_devvp); 406 407 /* init lock and lock the newborn ntnode */ 408 lockinit(&ip->i_lock, PINOD, "ntnode", 0, 0); 409 mtx_init(&ip->i_interlock, "ntnode interlock", NULL, MTX_DEF); 410 ntfs_ntget(ip); 411 412 ntfs_nthashins(ip); 413 414 lockmgr(&ntfs_hashlock, LK_RELEASE, NULL); 415 416 *ipp = ip; 417 418 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n", 419 ino, ip, ip->i_usecount)); 420 421 return (0); 422 } 423 424 /* 425 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 426 * deallocate ntnode. 427 * 428 * ntnode should be locked on entry, and unlocked on return. 429 */ 430 void 431 ntfs_ntput(ip) 432 struct ntnode *ip; 433 { 434 struct ntvattr *vap; 435 436 dprintf(("ntfs_ntput: rele ntnode %d: %p, usecount: %d\n", 437 ip->i_number, ip, ip->i_usecount)); 438 439 mtx_lock(&ip->i_interlock); 440 ip->i_usecount--; 441 442 #ifdef DIAGNOSTIC 443 if (ip->i_usecount < 0) { 444 panic("ntfs_ntput: ino: %d usecount: %d \n", 445 ip->i_number,ip->i_usecount); 446 } 447 #endif 448 449 if (ip->i_usecount > 0) { 450 lockmgr(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock); 451 return; 452 } 453 454 dprintf(("ntfs_ntput: deallocating ntnode: %d\n", ip->i_number)); 455 456 if (LIST_FIRST(&ip->i_fnlist)) 457 panic("ntfs_ntput: ntnode has fnodes\n"); 458 459 ntfs_nthashrem(ip); 460 461 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 462 LIST_REMOVE(vap,va_list); 463 ntfs_freentvattr(vap); 464 } 465 lockmgr(&ip->i_lock, LK_RELEASE | LK_INTERLOCK, &ip->i_interlock); 466 mtx_destroy(&ip->i_interlock); 467 lockdestroy(&ip->i_lock); 468 vrele(ip->i_devvp); 469 free(ip, M_NTFSNTNODE); 470 } 471 472 /* 473 * increment usecount of ntnode 474 */ 475 void 476 ntfs_ntref(ip) 477 struct ntnode *ip; 478 { 479 mtx_lock(&ip->i_interlock); 480 ip->i_usecount++; 481 mtx_unlock(&ip->i_interlock); 482 483 dprintf(("ntfs_ntref: ino %d, usecount: %d\n", 484 ip->i_number, ip->i_usecount)); 485 486 } 487 488 /* 489 * Decrement usecount of ntnode. 490 */ 491 void 492 ntfs_ntrele(ip) 493 struct ntnode *ip; 494 { 495 dprintf(("ntfs_ntrele: rele ntnode %d: %p, usecount: %d\n", 496 ip->i_number, ip, ip->i_usecount)); 497 498 mtx_lock(&ip->i_interlock); 499 ip->i_usecount--; 500 501 if (ip->i_usecount < 0) 502 panic("ntfs_ntrele: ino: %d usecount: %d \n", 503 ip->i_number,ip->i_usecount); 504 mtx_unlock(&ip->i_interlock); 505 } 506 507 /* 508 * Deallocate all memory allocated for ntvattr 509 */ 510 void 511 ntfs_freentvattr(vap) 512 struct ntvattr * vap; 513 { 514 if (vap->va_flag & NTFS_AF_INRUN) { 515 if (vap->va_vruncn) 516 free(vap->va_vruncn, M_NTFSRUN); 517 if (vap->va_vruncl) 518 free(vap->va_vruncl, M_NTFSRUN); 519 } else { 520 if (vap->va_datap) 521 free(vap->va_datap, M_NTFSRDATA); 522 } 523 free(vap, M_NTFSNTVATTR); 524 } 525 526 /* 527 * Convert disk image of attribute into ntvattr structure, 528 * runs are expanded also. 529 */ 530 int 531 ntfs_attrtontvattr( 532 struct ntfsmount * ntmp, 533 struct ntvattr ** rvapp, 534 struct attr * rap) 535 { 536 int error, i; 537 struct ntvattr *vap; 538 539 error = 0; 540 *rvapp = NULL; 541 542 vap = malloc(sizeof(struct ntvattr), 543 M_NTFSNTVATTR, M_WAITOK | M_ZERO); 544 vap->va_ip = NULL; 545 vap->va_flag = rap->a_hdr.a_flag; 546 vap->va_type = rap->a_hdr.a_type; 547 vap->va_compression = rap->a_hdr.a_compression; 548 vap->va_index = rap->a_hdr.a_index; 549 550 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 551 552 vap->va_namelen = rap->a_hdr.a_namelen; 553 if (rap->a_hdr.a_namelen) { 554 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 555 ddprintf((", name:[")); 556 for (i = 0; i < vap->va_namelen; i++) { 557 vap->va_name[i] = unp[i]; 558 ddprintf(("%c", vap->va_name[i])); 559 } 560 ddprintf(("]")); 561 } 562 if (vap->va_flag & NTFS_AF_INRUN) { 563 ddprintf((", nonres.")); 564 vap->va_datalen = rap->a_nr.a_datalen; 565 vap->va_allocated = rap->a_nr.a_allocated; 566 vap->va_vcnstart = rap->a_nr.a_vcnstart; 567 vap->va_vcnend = rap->a_nr.a_vcnend; 568 vap->va_compressalg = rap->a_nr.a_compressalg; 569 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 570 &(vap->va_vruncnt), 571 (caddr_t) rap + rap->a_nr.a_dataoff); 572 } else { 573 vap->va_compressalg = 0; 574 ddprintf((", res.")); 575 vap->va_datalen = rap->a_r.a_datalen; 576 vap->va_allocated = rap->a_r.a_datalen; 577 vap->va_vcnstart = 0; 578 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 579 vap->va_datap = malloc(vap->va_datalen, 580 M_NTFSRDATA, M_WAITOK); 581 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 582 rap->a_r.a_datalen); 583 } 584 ddprintf((", len: %d", vap->va_datalen)); 585 586 if (error) 587 free(vap, M_NTFSNTVATTR); 588 else 589 *rvapp = vap; 590 591 ddprintf(("\n")); 592 593 return (error); 594 } 595 596 /* 597 * Expand run into more utilizable and more memory eating format. 598 */ 599 int 600 ntfs_runtovrun( 601 cn_t ** rcnp, 602 cn_t ** rclp, 603 u_long * rcntp, 604 u_int8_t * run) 605 { 606 u_int32_t off; 607 u_int32_t sz, i; 608 cn_t *cn; 609 cn_t *cl; 610 u_long cnt; 611 cn_t prev; 612 cn_t tmp; 613 614 off = 0; 615 cnt = 0; 616 i = 0; 617 while (run[off]) { 618 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 619 cnt++; 620 } 621 cn = malloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 622 cl = malloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 623 624 off = 0; 625 cnt = 0; 626 prev = 0; 627 while (run[off]) { 628 629 sz = run[off++]; 630 cl[cnt] = 0; 631 632 for (i = 0; i < (sz & 0xF); i++) 633 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 634 635 sz >>= 4; 636 if (run[off + sz - 1] & 0x80) { 637 tmp = ((u_int64_t) - 1) << (sz << 3); 638 for (i = 0; i < sz; i++) 639 tmp |= (u_int64_t) run[off++] << (i << 3); 640 } else { 641 tmp = 0; 642 for (i = 0; i < sz; i++) 643 tmp |= (u_int64_t) run[off++] << (i << 3); 644 } 645 if (tmp) 646 prev = cn[cnt] = prev + tmp; 647 else 648 cn[cnt] = tmp; 649 650 cnt++; 651 } 652 *rcnp = cn; 653 *rclp = cl; 654 *rcntp = cnt; 655 return (0); 656 } 657 658 /* 659 * Compare unicode and ascii string case insens. 660 */ 661 static int 662 ntfs_uastricmp(ntmp, ustr, ustrlen, astr, astrlen) 663 struct ntfsmount *ntmp; 664 const wchar *ustr; 665 size_t ustrlen; 666 const char *astr; 667 size_t astrlen; 668 { 669 int len; 670 size_t i, j, mbstrlen = astrlen; 671 int res; 672 wchar wc; 673 674 if (ntmp->ntm_ic_l2u) { 675 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++, j++) { 676 if (j < astrlen -1) { 677 wc = (wchar)astr[j]<<8 | (astr[j+1]&0xFF); 678 len = 2; 679 } else { 680 wc = (wchar)astr[j]<<8 & 0xFF00; 681 len = 1; 682 } 683 res = ((int) NTFS_TOUPPER(ustr[i])) - 684 ((int)NTFS_TOUPPER(NTFS_82U(wc, &len))); 685 j += len - 1; 686 mbstrlen -= len - 1; 687 688 if (res) 689 return res; 690 } 691 } else { 692 /* 693 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 694 * symbols not covered by translation table 695 */ 696 for (i = 0; i < ustrlen && i < astrlen; i++) { 697 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) - 698 ((int)NTFS_TOUPPER(NTFS_82U((wchar)astr[i], &len))); 699 if (res) 700 return res; 701 } 702 } 703 return (ustrlen - mbstrlen); 704 } 705 706 /* 707 * Compare unicode and ascii string case sens. 708 */ 709 static int 710 ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 711 struct ntfsmount *ntmp; 712 const wchar *ustr; 713 size_t ustrlen; 714 const char *astr; 715 size_t astrlen; 716 { 717 char u, l; 718 size_t i, j, mbstrlen = astrlen; 719 int res; 720 wchar wc; 721 722 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, j++) { 723 res = 0; 724 wc = NTFS_U28(ustr[i]); 725 u = (char)(wc>>8); 726 l = (char)wc; 727 if (u != '\0' && j < astrlen -1) { 728 res = (int) (u - astr[j++]); 729 mbstrlen--; 730 } 731 res = (res<<8) + (int) (l - astr[j]); 732 if (res) 733 return res; 734 } 735 return (ustrlen - mbstrlen); 736 } 737 738 /* 739 * Search fnode in ntnode, if not found allocate and preinitialize. 740 * 741 * ntnode should be locked on entry. 742 */ 743 int 744 ntfs_fget( 745 struct ntfsmount *ntmp, 746 struct ntnode *ip, 747 int attrtype, 748 char *attrname, 749 struct fnode **fpp) 750 { 751 struct fnode *fp; 752 753 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 754 ip->i_number,attrtype, attrname?attrname:"")); 755 *fpp = NULL; 756 LIST_FOREACH(fp, &ip->i_fnlist, f_fnlist){ 757 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 758 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 759 760 if ((attrtype == fp->f_attrtype) && 761 ((!attrname && !fp->f_attrname) || 762 (attrname && fp->f_attrname && 763 !strcmp(attrname,fp->f_attrname)))){ 764 dprintf(("ntfs_fget: found existed: %p\n",fp)); 765 *fpp = fp; 766 } 767 } 768 769 if (*fpp) 770 return (0); 771 772 fp = malloc(sizeof(struct fnode), M_NTFSFNODE, 773 M_WAITOK | M_ZERO); 774 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 775 776 fp->f_ip = ip; 777 if (attrname) { 778 fp->f_flag |= FN_AATTRNAME; 779 fp->f_attrname = malloc(strlen(attrname)+1, M_TEMP, M_WAITOK); 780 strcpy(fp->f_attrname, attrname); 781 } else 782 fp->f_attrname = NULL; 783 fp->f_attrtype = attrtype; 784 785 ntfs_ntref(ip); 786 787 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 788 789 *fpp = fp; 790 791 return (0); 792 } 793 794 /* 795 * Deallocate fnode, remove it from ntnode's fnode list. 796 * 797 * ntnode should be locked. 798 */ 799 void 800 ntfs_frele( 801 struct fnode *fp) 802 { 803 struct ntnode *ip = FTONT(fp); 804 805 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 806 807 dprintf(("ntfs_frele: deallocating fnode\n")); 808 LIST_REMOVE(fp,f_fnlist); 809 if (fp->f_flag & FN_AATTRNAME) 810 free(fp->f_attrname, M_TEMP); 811 if (fp->f_dirblbuf) 812 free(fp->f_dirblbuf, M_NTFSDIR); 813 free(fp, M_NTFSFNODE); 814 ntfs_ntrele(ip); 815 } 816 817 /* 818 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 819 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 820 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 821 */ 822 static int 823 ntfs_ntlookupattr( 824 struct ntfsmount * ntmp, 825 const char * name, 826 int namelen, 827 int *attrtype, 828 char **attrname) 829 { 830 const char *sys; 831 size_t syslen, i; 832 struct ntvattrdef *adp; 833 834 if (namelen == 0) 835 return (0); 836 837 if (name[0] == '$') { 838 sys = name; 839 for (syslen = 0; syslen < namelen; syslen++) { 840 if(sys[syslen] == ':') { 841 name++; 842 namelen--; 843 break; 844 } 845 } 846 name += syslen; 847 namelen -= syslen; 848 849 adp = ntmp->ntm_ad; 850 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 851 if (syslen != adp->ad_namelen || 852 strncmp(sys, adp->ad_name, syslen) != 0) 853 continue; 854 855 *attrtype = adp->ad_type; 856 goto out; 857 } 858 return (ENOENT); 859 } else 860 *attrtype = NTFS_A_DATA; 861 862 out: 863 if (namelen) { 864 (*attrname) = malloc(namelen, M_TEMP, M_WAITOK); 865 memcpy((*attrname), name, namelen); 866 (*attrname)[namelen] = '\0'; 867 } 868 869 return (0); 870 } 871 872 /* 873 * Lookup specifed node for filename, matching cnp, 874 * return fnode filled. 875 */ 876 int 877 ntfs_ntlookupfile( 878 struct ntfsmount * ntmp, 879 struct vnode * vp, 880 struct componentname * cnp, 881 struct vnode ** vpp) 882 { 883 struct fnode *fp = VTOF(vp); 884 struct ntnode *ip = FTONT(fp); 885 struct ntvattr *vap; /* Root attribute */ 886 cn_t cn; /* VCN in current attribute */ 887 caddr_t rdbuf; /* Buffer to read directory's blocks */ 888 u_int32_t blsize; 889 u_int64_t rdsize; /* Length of data to read from current block */ 890 struct attr_indexentry *iep; 891 int error, res, anamelen, fnamelen; 892 const char *fname,*aname; 893 u_int32_t aoff; 894 int attrtype = NTFS_A_DATA; 895 char *attrname = NULL; 896 struct fnode *nfp; 897 struct vnode *nvp; 898 enum vtype f_type; 899 900 error = ntfs_ntget(ip); 901 if (error) 902 return (error); 903 904 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 905 if (error || (vap->va_flag & NTFS_AF_INRUN)) 906 return (ENOTDIR); 907 908 blsize = vap->va_a_iroot->ir_size; 909 rdsize = vap->va_datalen; 910 911 /* 912 * Divide file name into: foofilefoofilefoofile[:attrspec] 913 * Store like this: fname:fnamelen [aname:anamelen] 914 */ 915 fname = cnp->cn_nameptr; 916 aname = NULL; 917 anamelen = 0; 918 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 919 if(fname[fnamelen] == ':') { 920 aname = fname + fnamelen + 1; 921 anamelen = cnp->cn_namelen - fnamelen - 1; 922 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 923 fname, fnamelen, aname, anamelen)); 924 break; 925 } 926 927 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %jd\n", blsize, rdsize)); 928 929 rdbuf = malloc(blsize, M_TEMP, M_WAITOK); 930 931 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 932 0, rdsize, rdbuf, NULL); 933 if (error) 934 goto fail; 935 936 aoff = sizeof(struct attr_indexroot); 937 938 do { 939 iep = (struct attr_indexentry *) (rdbuf + aoff); 940 941 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 942 aoff += iep->reclen, 943 iep = (struct attr_indexentry *) (rdbuf + aoff)) 944 { 945 ddprintf(("scan: %d, %d\n", 946 (u_int32_t) iep->ie_number, 947 (u_int32_t) iep->ie_fnametype)); 948 949 /* check the name - the case-insensitible check 950 * has to come first, to break from this for loop 951 * if needed, so we can dive correctly */ 952 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 953 fname, fnamelen); 954 if (res > 0) break; 955 if (res < 0) continue; 956 957 if (iep->ie_fnametype == 0 || 958 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 959 { 960 res = NTFS_UASTRCMP(iep->ie_fname, 961 iep->ie_fnamelen, fname, fnamelen); 962 if (res != 0) continue; 963 } 964 965 if (aname) { 966 error = ntfs_ntlookupattr(ntmp, 967 aname, anamelen, 968 &attrtype, &attrname); 969 if (error) 970 goto fail; 971 } 972 973 /* Check if we've found ourself */ 974 if ((iep->ie_number == ip->i_number) && 975 (attrtype == fp->f_attrtype) && 976 ((!attrname && !fp->f_attrname) || 977 (attrname && fp->f_attrname && 978 !strcmp(attrname, fp->f_attrname)))) 979 { 980 VREF(vp); 981 *vpp = vp; 982 error = 0; 983 goto fail; 984 } 985 986 /* vget node, but don't load it */ 987 error = ntfs_vgetex(ntmp->ntm_mountp, 988 iep->ie_number, attrtype, attrname, 989 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 990 curthread, &nvp); 991 992 /* free the buffer returned by ntfs_ntlookupattr() */ 993 if (attrname) { 994 free(attrname, M_TEMP); 995 attrname = NULL; 996 } 997 998 if (error) 999 goto fail; 1000 1001 nfp = VTOF(nvp); 1002 1003 if (nfp->f_flag & FN_VALID) { 1004 *vpp = nvp; 1005 goto fail; 1006 } 1007 1008 nfp->f_fflag = iep->ie_fflag; 1009 nfp->f_pnumber = iep->ie_fpnumber; 1010 nfp->f_times = iep->ie_ftimes; 1011 1012 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 1013 (nfp->f_attrtype == NTFS_A_DATA) && 1014 (nfp->f_attrname == NULL)) 1015 f_type = VDIR; 1016 else 1017 f_type = VREG; 1018 1019 nvp->v_type = f_type; 1020 1021 if ((nfp->f_attrtype == NTFS_A_DATA) && 1022 (nfp->f_attrname == NULL)) 1023 { 1024 /* Opening default attribute */ 1025 nfp->f_size = iep->ie_fsize; 1026 nfp->f_allocated = iep->ie_fallocated; 1027 nfp->f_flag |= FN_PRELOADED; 1028 } else { 1029 error = ntfs_filesize(ntmp, nfp, 1030 &nfp->f_size, &nfp->f_allocated); 1031 if (error) { 1032 vput(nvp); 1033 goto fail; 1034 } 1035 } 1036 1037 nfp->f_flag &= ~FN_VALID; 1038 *vpp = nvp; 1039 goto fail; 1040 } 1041 1042 /* Dive if possible */ 1043 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1044 dprintf(("ntfs_ntlookupfile: diving\n")); 1045 1046 cn = *(cn_t *) (rdbuf + aoff + 1047 iep->reclen - sizeof(cn_t)); 1048 rdsize = blsize; 1049 1050 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1051 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1052 if (error) 1053 goto fail; 1054 1055 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1056 rdbuf, rdsize); 1057 if (error) 1058 goto fail; 1059 1060 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1061 0x18); 1062 } else { 1063 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1064 error = ENOENT; 1065 break; 1066 } 1067 } while (1); 1068 1069 dprintf(("finish\n")); 1070 1071 fail: 1072 if (attrname) free(attrname, M_TEMP); 1073 ntfs_ntvattrrele(vap); 1074 ntfs_ntput(ip); 1075 free(rdbuf, M_TEMP); 1076 return (error); 1077 } 1078 1079 /* 1080 * Check if name type is permitted to show. 1081 */ 1082 int 1083 ntfs_isnamepermitted( 1084 struct ntfsmount * ntmp, 1085 struct attr_indexentry * iep) 1086 { 1087 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1088 return 1; 1089 1090 switch (iep->ie_fnametype) { 1091 case 2: 1092 ddprintf(("ntfs_isnamepermitted: skipped DOS name\n")); 1093 return 0; 1094 case 0: case 1: case 3: 1095 return 1; 1096 default: 1097 printf("ntfs_isnamepermitted: " \ 1098 "WARNING! Unknown file name type: %d\n", 1099 iep->ie_fnametype); 1100 break; 1101 } 1102 return 0; 1103 } 1104 1105 /* 1106 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1107 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1108 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1109 * fnode, so we can skip toward record number num almost immediatly. 1110 * Anyway this is rather slow routine. The problem is that we don't know 1111 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1112 */ 1113 int 1114 ntfs_ntreaddir( 1115 struct ntfsmount * ntmp, 1116 struct fnode * fp, 1117 u_int32_t num, 1118 struct attr_indexentry ** riepp) 1119 { 1120 struct ntnode *ip = FTONT(fp); 1121 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1122 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1123 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1124 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1125 u_int8_t *bmp = NULL; /* Bitmap */ 1126 u_int32_t blsize; /* Index allocation size (2048) */ 1127 u_int32_t rdsize; /* Length of data to read */ 1128 u_int32_t attrnum; /* Current attribute type */ 1129 u_int32_t cpbl = 1; /* Clusters per directory block */ 1130 u_int32_t blnum; 1131 struct attr_indexentry *iep; 1132 int error = ENOENT; 1133 u_int32_t aoff, cnum; 1134 1135 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1136 error = ntfs_ntget(ip); 1137 if (error) 1138 return (error); 1139 1140 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1141 if (error) 1142 return (ENOTDIR); 1143 1144 if (fp->f_dirblbuf == NULL) { 1145 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1146 fp->f_dirblbuf = malloc(max(vap->va_datalen,fp->f_dirblsz), 1147 M_NTFSDIR, M_WAITOK); 1148 } 1149 1150 blsize = fp->f_dirblsz; 1151 rdbuf = fp->f_dirblbuf; 1152 1153 dprintf(("ntfs_ntreaddir: rdbuf: %p, blsize: %d\n", rdbuf, blsize)); 1154 1155 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1156 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1157 0, &bmvap); 1158 if (error) { 1159 error = ENOTDIR; 1160 goto fail; 1161 } 1162 bmp = malloc(bmvap->va_datalen, M_TEMP, M_WAITOK); 1163 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1164 bmvap->va_datalen, bmp, NULL); 1165 if (error) 1166 goto fail; 1167 1168 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1169 0, &iavap); 1170 if (error) { 1171 error = ENOTDIR; 1172 goto fail; 1173 } 1174 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1175 dprintf(("ntfs_ntreaddir: indexalloc: %jd, cpbl: %d\n", 1176 iavap->va_datalen, cpbl)); 1177 } else { 1178 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1179 iavap = bmvap = NULL; 1180 bmp = NULL; 1181 } 1182 1183 /* Try use previous values */ 1184 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1185 attrnum = fp->f_lastdattr; 1186 aoff = fp->f_lastdoff; 1187 blnum = fp->f_lastdblnum; 1188 cnum = fp->f_lastdnum; 1189 } else { 1190 attrnum = NTFS_A_INDXROOT; 1191 aoff = sizeof(struct attr_indexroot); 1192 blnum = 0; 1193 cnum = 0; 1194 } 1195 1196 do { 1197 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1198 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1199 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1200 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1201 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1202 if (error) 1203 goto fail; 1204 1205 if (attrnum == NTFS_A_INDX) { 1206 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1207 rdbuf, rdsize); 1208 if (error) 1209 goto fail; 1210 } 1211 if (aoff == 0) 1212 aoff = (attrnum == NTFS_A_INDX) ? 1213 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1214 sizeof(struct attr_indexroot); 1215 1216 iep = (struct attr_indexentry *) (rdbuf + aoff); 1217 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1218 aoff += iep->reclen, 1219 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1220 { 1221 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1222 1223 if (cnum >= num) { 1224 fp->f_lastdnum = cnum; 1225 fp->f_lastdoff = aoff; 1226 fp->f_lastdblnum = blnum; 1227 fp->f_lastdattr = attrnum; 1228 1229 *riepp = iep; 1230 1231 error = 0; 1232 goto fail; 1233 } 1234 cnum++; 1235 } 1236 1237 if (iavap) { 1238 if (attrnum == NTFS_A_INDXROOT) 1239 blnum = 0; 1240 else 1241 blnum++; 1242 1243 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1244 if (bmp[blnum >> 3] & (1 << (blnum & 7))) 1245 break; 1246 blnum++; 1247 } 1248 1249 attrnum = NTFS_A_INDX; 1250 aoff = 0; 1251 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1252 break; 1253 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1254 } 1255 } while (iavap); 1256 1257 *riepp = NULL; 1258 fp->f_lastdnum = 0; 1259 1260 fail: 1261 if (vap) 1262 ntfs_ntvattrrele(vap); 1263 if (bmvap) 1264 ntfs_ntvattrrele(bmvap); 1265 if (iavap) 1266 ntfs_ntvattrrele(iavap); 1267 if (bmp) 1268 free(bmp, M_TEMP); 1269 ntfs_ntput(ip); 1270 return (error); 1271 } 1272 1273 /* 1274 * Convert NTFS times that are in 100 ns units and begins from 1275 * 1601 Jan 1 into unix times. 1276 */ 1277 struct timespec 1278 ntfs_nttimetounix( 1279 u_int64_t nt) 1280 { 1281 struct timespec t; 1282 1283 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1284 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1285 t.tv_sec = nt / (1000 * 1000 * 10) - 1286 369LL * 365LL * 24LL * 60LL * 60LL - 1287 89LL * 1LL * 24LL * 60LL * 60LL; 1288 return (t); 1289 } 1290 1291 /* 1292 * Get file times from NTFS_A_NAME attribute. 1293 */ 1294 int 1295 ntfs_times( 1296 struct ntfsmount * ntmp, 1297 struct ntnode * ip, 1298 ntfs_times_t * tm) 1299 { 1300 struct ntvattr *vap; 1301 int error; 1302 1303 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1304 1305 error = ntfs_ntget(ip); 1306 if (error) 1307 return (error); 1308 1309 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1310 if (error) { 1311 ntfs_ntput(ip); 1312 return (error); 1313 } 1314 *tm = vap->va_a_name->n_times; 1315 ntfs_ntvattrrele(vap); 1316 ntfs_ntput(ip); 1317 1318 return (0); 1319 } 1320 1321 /* 1322 * Get file sizes from corresponding attribute. 1323 * 1324 * ntnode under fnode should be locked. 1325 */ 1326 int 1327 ntfs_filesize( 1328 struct ntfsmount * ntmp, 1329 struct fnode * fp, 1330 u_int64_t * size, 1331 u_int64_t * bytes) 1332 { 1333 struct ntvattr *vap; 1334 struct ntnode *ip = FTONT(fp); 1335 u_int64_t sz, bn; 1336 int error; 1337 1338 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1339 1340 error = ntfs_ntvattrget(ntmp, ip, 1341 fp->f_attrtype, fp->f_attrname, 0, &vap); 1342 if (error) 1343 return (error); 1344 1345 bn = vap->va_allocated; 1346 sz = vap->va_datalen; 1347 1348 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1349 (u_int32_t) sz, (u_int32_t) bn)); 1350 1351 if (size) 1352 *size = sz; 1353 if (bytes) 1354 *bytes = bn; 1355 1356 ntfs_ntvattrrele(vap); 1357 1358 return (0); 1359 } 1360 1361 /* 1362 * This is one of write routine. 1363 */ 1364 int 1365 ntfs_writeattr_plain( 1366 struct ntfsmount * ntmp, 1367 struct ntnode * ip, 1368 u_int32_t attrnum, 1369 char *attrname, 1370 off_t roff, 1371 size_t rsize, 1372 void *rdata, 1373 size_t * initp, 1374 struct uio *uio) 1375 { 1376 size_t init; 1377 int error = 0; 1378 off_t off = roff, left = rsize, towrite; 1379 caddr_t data = rdata; 1380 struct ntvattr *vap; 1381 *initp = 0; 1382 1383 while (left) { 1384 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1385 ntfs_btocn(off), &vap); 1386 if (error) 1387 return (error); 1388 towrite = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1389 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1390 (u_int32_t) off, (u_int32_t) towrite, 1391 (u_int32_t) vap->va_vcnstart, 1392 (u_int32_t) vap->va_vcnend)); 1393 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1394 off - ntfs_cntob(vap->va_vcnstart), 1395 towrite, data, &init, uio); 1396 if (error) { 1397 printf("ntfs_writeattr_plain: " \ 1398 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1399 (u_int32_t) off, (u_int32_t) towrite); 1400 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1401 (u_int32_t) vap->va_vcnstart, 1402 (u_int32_t) vap->va_vcnend); 1403 ntfs_ntvattrrele(vap); 1404 break; 1405 } 1406 ntfs_ntvattrrele(vap); 1407 left -= towrite; 1408 off += towrite; 1409 data = data + towrite; 1410 *initp += init; 1411 } 1412 1413 return (error); 1414 } 1415 1416 /* 1417 * This is one of write routine. 1418 * 1419 * ntnode should be locked. 1420 */ 1421 int 1422 ntfs_writentvattr_plain( 1423 struct ntfsmount * ntmp, 1424 struct ntnode * ip, 1425 struct ntvattr * vap, 1426 off_t roff, 1427 size_t rsize, 1428 void *rdata, 1429 size_t * initp, 1430 struct uio *uio) 1431 { 1432 int error = 0; 1433 off_t off; 1434 int cnt; 1435 cn_t ccn, ccl, cn, left, cl; 1436 caddr_t data = rdata; 1437 struct buf *bp; 1438 size_t tocopy; 1439 1440 *initp = 0; 1441 1442 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1443 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1444 return ENOTTY; 1445 } 1446 1447 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1448 vap->va_vruncnt)); 1449 1450 off = roff; 1451 left = rsize; 1452 ccl = 0; 1453 ccn = 0; 1454 cnt = 0; 1455 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1456 ccn = vap->va_vruncn[cnt]; 1457 ccl = vap->va_vruncl[cnt]; 1458 1459 ddprintf(("ntfs_writentvattr_plain: " \ 1460 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1461 (u_int32_t) left, (u_int32_t) ccn, \ 1462 (u_int32_t) ccl, (u_int32_t) off)); 1463 1464 if (ntfs_cntob(ccl) < off) { 1465 off -= ntfs_cntob(ccl); 1466 cnt++; 1467 continue; 1468 } 1469 if (!ccn && ip->i_number != NTFS_BOOTINO) 1470 continue; /* XXX */ 1471 1472 ccl -= ntfs_btocn(off); 1473 cn = ccn + ntfs_btocn(off); 1474 off = ntfs_btocnoff(off); 1475 1476 while (left && ccl) { 1477 /* 1478 * Always read and write single clusters at a time - 1479 * we need to avoid requesting differently-sized 1480 * blocks at the same disk offsets to avoid 1481 * confusing the buffer cache. 1482 */ 1483 tocopy = MIN(left, ntfs_cntob(1) - off); 1484 cl = ntfs_btocl(tocopy + off); 1485 KASSERT(cl == 1 && tocopy <= ntfs_cntob(1), 1486 ("single cluster limit mistake")); 1487 ddprintf(("ntfs_writentvattr_plain: write: " \ 1488 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1489 (u_int32_t) cn, (u_int32_t) cl, 1490 (u_int32_t) off, (u_int32_t) tocopy, 1491 (u_int32_t) left)); 1492 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1493 { 1494 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn), 1495 ntfs_cntob(cl), 0, 0, 0); 1496 clrbuf(bp); 1497 } else { 1498 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn), 1499 ntfs_cntob(cl), NOCRED, &bp); 1500 if (error) { 1501 brelse(bp); 1502 return (error); 1503 } 1504 } 1505 if (uio) 1506 uiomove(bp->b_data + off, tocopy, uio); 1507 else 1508 memcpy(bp->b_data + off, data, tocopy); 1509 bawrite(bp); 1510 data = data + tocopy; 1511 *initp += tocopy; 1512 off = 0; 1513 left -= tocopy; 1514 cn += cl; 1515 ccl -= cl; 1516 } 1517 } 1518 1519 if (left) { 1520 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1521 error = EINVAL; 1522 } 1523 1524 return (error); 1525 } 1526 1527 /* 1528 * This is one of read routines. 1529 * 1530 * ntnode should be locked. 1531 */ 1532 int 1533 ntfs_readntvattr_plain( 1534 struct ntfsmount * ntmp, 1535 struct ntnode * ip, 1536 struct ntvattr * vap, 1537 off_t roff, 1538 size_t rsize, 1539 void *rdata, 1540 size_t * initp, 1541 struct uio *uio) 1542 { 1543 int error = 0; 1544 off_t off; 1545 1546 *initp = 0; 1547 if (vap->va_flag & NTFS_AF_INRUN) { 1548 int cnt; 1549 cn_t ccn, ccl, cn, left, cl; 1550 caddr_t data = rdata; 1551 struct buf *bp; 1552 size_t tocopy; 1553 1554 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1555 vap->va_vruncnt)); 1556 1557 off = roff; 1558 left = rsize; 1559 ccl = 0; 1560 ccn = 0; 1561 cnt = 0; 1562 while (left && (cnt < vap->va_vruncnt)) { 1563 ccn = vap->va_vruncn[cnt]; 1564 ccl = vap->va_vruncl[cnt]; 1565 1566 ddprintf(("ntfs_readntvattr_plain: " \ 1567 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1568 (u_int32_t) left, (u_int32_t) ccn, \ 1569 (u_int32_t) ccl, (u_int32_t) off)); 1570 1571 if (ntfs_cntob(ccl) < off) { 1572 off -= ntfs_cntob(ccl); 1573 cnt++; 1574 continue; 1575 } 1576 if (ccn || ip->i_number == NTFS_BOOTINO) { 1577 ccl -= ntfs_btocn(off); 1578 cn = ccn + ntfs_btocn(off); 1579 off = ntfs_btocnoff(off); 1580 1581 while (left && ccl) { 1582 /* 1583 * Always read single clusters at a 1584 * time - we need to avoid reading 1585 * differently-sized blocks at the 1586 * same disk offsets to avoid 1587 * confusing the buffer cache. 1588 */ 1589 tocopy = MIN(left, 1590 ntfs_cntob(1) - off); 1591 cl = ntfs_btocl(tocopy + off); 1592 KASSERT(cl == 1 && 1593 tocopy <= ntfs_cntob(1), 1594 ("single cluster limit mistake")); 1595 1596 ddprintf(("ntfs_readntvattr_plain: " \ 1597 "read: cn: 0x%x cl: %d, " \ 1598 "off: %d len: %d, left: %d\n", 1599 (u_int32_t) cn, 1600 (u_int32_t) cl, 1601 (u_int32_t) off, 1602 (u_int32_t) tocopy, 1603 (u_int32_t) left)); 1604 error = bread(ntmp->ntm_devvp, 1605 ntfs_cntobn(cn), 1606 ntfs_cntob(cl), 1607 NOCRED, &bp); 1608 if (error) { 1609 brelse(bp); 1610 return (error); 1611 } 1612 if (uio) { 1613 uiomove(bp->b_data + off, 1614 tocopy, uio); 1615 } else { 1616 memcpy(data, bp->b_data + off, 1617 tocopy); 1618 } 1619 brelse(bp); 1620 data = data + tocopy; 1621 *initp += tocopy; 1622 off = 0; 1623 left -= tocopy; 1624 cn += cl; 1625 ccl -= cl; 1626 } 1627 } else { 1628 tocopy = MIN(left, ntfs_cntob(ccl) - off); 1629 ddprintf(("ntfs_readntvattr_plain: " 1630 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1631 " len: %d, left: %d\n", 1632 (u_int32_t) ccn, (u_int32_t) ccl, 1633 (u_int32_t) off, (u_int32_t) tocopy, 1634 (u_int32_t) left)); 1635 left -= tocopy; 1636 off = 0; 1637 if (uio) { 1638 size_t remains = tocopy; 1639 for(; remains; remains--) 1640 uiomove("", 1, uio); 1641 } else 1642 bzero(data, tocopy); 1643 data = data + tocopy; 1644 } 1645 cnt++; 1646 } 1647 if (left) { 1648 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1649 error = E2BIG; 1650 } 1651 } else { 1652 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1653 if (uio) 1654 uiomove(vap->va_datap + roff, rsize, uio); 1655 else 1656 memcpy(rdata, vap->va_datap + roff, rsize); 1657 *initp += rsize; 1658 } 1659 1660 return (error); 1661 } 1662 1663 /* 1664 * This is one of read routines. 1665 */ 1666 int 1667 ntfs_readattr_plain( 1668 struct ntfsmount * ntmp, 1669 struct ntnode * ip, 1670 u_int32_t attrnum, 1671 char *attrname, 1672 off_t roff, 1673 size_t rsize, 1674 void *rdata, 1675 size_t * initp, 1676 struct uio *uio) 1677 { 1678 size_t init; 1679 int error = 0; 1680 off_t off = roff, left = rsize, toread; 1681 caddr_t data = rdata; 1682 struct ntvattr *vap; 1683 *initp = 0; 1684 1685 while (left) { 1686 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1687 ntfs_btocn(off), &vap); 1688 if (error) 1689 return (error); 1690 toread = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1691 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1692 (u_int32_t) off, (u_int32_t) toread, 1693 (u_int32_t) vap->va_vcnstart, 1694 (u_int32_t) vap->va_vcnend)); 1695 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1696 off - ntfs_cntob(vap->va_vcnstart), 1697 toread, data, &init, uio); 1698 if (error) { 1699 printf("ntfs_readattr_plain: " \ 1700 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1701 (u_int32_t) off, (u_int32_t) toread); 1702 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1703 (u_int32_t) vap->va_vcnstart, 1704 (u_int32_t) vap->va_vcnend); 1705 ntfs_ntvattrrele(vap); 1706 break; 1707 } 1708 ntfs_ntvattrrele(vap); 1709 left -= toread; 1710 off += toread; 1711 data = data + toread; 1712 *initp += init; 1713 } 1714 1715 return (error); 1716 } 1717 1718 /* 1719 * This is one of read routines. 1720 */ 1721 int 1722 ntfs_readattr( 1723 struct ntfsmount * ntmp, 1724 struct ntnode * ip, 1725 u_int32_t attrnum, 1726 char *attrname, 1727 off_t roff, 1728 size_t rsize, 1729 void *rdata, 1730 struct uio *uio) 1731 { 1732 int error = 0; 1733 struct ntvattr *vap; 1734 size_t init; 1735 1736 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1737 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1738 1739 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1740 if (error) 1741 return (error); 1742 1743 if ((roff > vap->va_datalen) || 1744 (roff + rsize > vap->va_datalen)) { 1745 ddprintf(("ntfs_readattr: offset too big\n")); 1746 ntfs_ntvattrrele(vap); 1747 return (E2BIG); 1748 } 1749 if (vap->va_compression && vap->va_compressalg) { 1750 u_int8_t *cup; 1751 u_int8_t *uup; 1752 off_t off = roff, left = rsize, tocopy; 1753 caddr_t data = rdata; 1754 cn_t cn; 1755 1756 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1757 vap->va_compressalg)); 1758 1759 cup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1760 M_NTFSDECOMP, M_WAITOK); 1761 uup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1762 M_NTFSDECOMP, M_WAITOK); 1763 1764 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1765 off = roff - ntfs_cntob(cn); 1766 1767 while (left) { 1768 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1769 attrname, ntfs_cntob(cn), 1770 ntfs_cntob(NTFS_COMPUNIT_CL), 1771 cup, &init, NULL); 1772 if (error) 1773 break; 1774 1775 tocopy = MIN(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1776 1777 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1778 if (uio) 1779 uiomove(cup + off, tocopy, uio); 1780 else 1781 memcpy(data, cup + off, tocopy); 1782 } else if (init == 0) { 1783 if (uio) { 1784 size_t remains = tocopy; 1785 for(; remains; remains--) 1786 uiomove("", 1, uio); 1787 } 1788 else 1789 bzero(data, tocopy); 1790 } else { 1791 error = ntfs_uncompunit(ntmp, uup, cup); 1792 if (error) 1793 break; 1794 if (uio) 1795 uiomove(uup + off, tocopy, uio); 1796 else 1797 memcpy(data, uup + off, tocopy); 1798 } 1799 1800 left -= tocopy; 1801 data = data + tocopy; 1802 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1803 cn += NTFS_COMPUNIT_CL; 1804 } 1805 1806 free(uup, M_NTFSDECOMP); 1807 free(cup, M_NTFSDECOMP); 1808 } else 1809 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1810 roff, rsize, rdata, &init, uio); 1811 ntfs_ntvattrrele(vap); 1812 return (error); 1813 } 1814 1815 #if 0 1816 int 1817 ntfs_parserun( 1818 cn_t * cn, 1819 cn_t * cl, 1820 u_int8_t * run, 1821 u_long len, 1822 u_long *off) 1823 { 1824 u_int8_t sz; 1825 int i; 1826 1827 if (NULL == run) { 1828 printf("ntfs_parsetun: run == NULL\n"); 1829 return (EINVAL); 1830 } 1831 sz = run[(*off)++]; 1832 if (0 == sz) { 1833 printf("ntfs_parserun: trying to go out of run\n"); 1834 return (E2BIG); 1835 } 1836 *cl = 0; 1837 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1838 printf("ntfs_parserun: " \ 1839 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1840 sz, len, *off); 1841 return (EINVAL); 1842 } 1843 for (i = 0; i < (sz & 0xF); i++) 1844 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1845 1846 sz >>= 4; 1847 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1848 printf("ntfs_parserun: " \ 1849 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1850 sz, len, *off); 1851 return (EINVAL); 1852 } 1853 for (i = 0; i < (sz & 0xF); i++) 1854 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1855 1856 return (0); 1857 } 1858 #endif 1859 1860 /* 1861 * Process fixup routine on given buffer. 1862 */ 1863 int 1864 ntfs_procfixups( 1865 struct ntfsmount * ntmp, 1866 u_int32_t magic, 1867 caddr_t buf, 1868 size_t len) 1869 { 1870 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1871 int i; 1872 u_int16_t fixup; 1873 u_int16_t *fxp; 1874 u_int16_t *cfxp; 1875 1876 if (fhp->fh_magic != magic) { 1877 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1878 fhp->fh_magic, magic); 1879 return (EINVAL); 1880 } 1881 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1882 printf("ntfs_procfixups: " \ 1883 "bad fixups number: %d for %ld bytes block\n", 1884 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1885 return (EINVAL); 1886 } 1887 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1888 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1889 return (EINVAL); 1890 } 1891 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1892 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1893 fixup = *fxp++; 1894 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1895 if (*cfxp != fixup) { 1896 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1897 return (EINVAL); 1898 } 1899 *cfxp = *fxp; 1900 cfxp = (u_int16_t *) ((caddr_t) cfxp + ntmp->ntm_bps); 1901 } 1902 return (0); 1903 } 1904 1905 #if 0 1906 int 1907 ntfs_runtocn( 1908 cn_t * cn, 1909 struct ntfsmount * ntmp, 1910 u_int8_t * run, 1911 u_long len, 1912 cn_t vcn) 1913 { 1914 cn_t ccn = 0; 1915 cn_t ccl = 0; 1916 u_long off = 0; 1917 int error = 0; 1918 1919 #if NTFS_DEBUG 1920 int i; 1921 printf("ntfs_runtocn: run: %p, %ld bytes, vcn:%ld\n", 1922 run, len, (u_long) vcn); 1923 printf("ntfs_runtocn: run: "); 1924 for (i = 0; i < len; i++) 1925 printf("0x%02x ", run[i]); 1926 printf("\n"); 1927 #endif 1928 1929 if (NULL == run) { 1930 printf("ntfs_runtocn: run == NULL\n"); 1931 return (EINVAL); 1932 } 1933 do { 1934 if (run[off] == 0) { 1935 printf("ntfs_runtocn: vcn too big\n"); 1936 return (E2BIG); 1937 } 1938 vcn -= ccl; 1939 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1940 if (error) { 1941 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1942 return (error); 1943 } 1944 } while (ccl <= vcn); 1945 *cn = ccn + vcn; 1946 return (0); 1947 } 1948 #endif 1949 1950 /* 1951 * this initializes toupper table & dependant variables to be ready for 1952 * later work 1953 */ 1954 void 1955 ntfs_toupper_init() 1956 { 1957 ntfs_toupper_tab = (wchar *) NULL; 1958 lockinit(&ntfs_toupper_lock, PVFS, "ntfs_toupper", 0, 0); 1959 ntfs_toupper_usecount = 0; 1960 } 1961 1962 void 1963 ntfs_toupper_destroy(void) 1964 { 1965 1966 lockdestroy(&ntfs_toupper_lock); 1967 } 1968 1969 /* 1970 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1971 * otherwise read the data from the filesystem we are currently mounting 1972 */ 1973 int 1974 ntfs_toupper_use(mp, ntmp) 1975 struct mount *mp; 1976 struct ntfsmount *ntmp; 1977 { 1978 int error = 0; 1979 struct vnode *vp; 1980 1981 /* get exclusive access */ 1982 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1983 1984 /* only read the translation data from a file if it hasn't been 1985 * read already */ 1986 if (ntfs_toupper_tab) 1987 goto out; 1988 1989 /* 1990 * Read in Unicode lowercase -> uppercase translation file. 1991 * XXX for now, just the first 256 entries are used anyway, 1992 * so don't bother reading more 1993 */ 1994 ntfs_toupper_tab = malloc(65536 * sizeof(wchar), 1995 M_NTFSRDATA, M_WAITOK); 1996 1997 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, LK_EXCLUSIVE, &vp))) 1998 goto out; 1999 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 2000 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 2001 vput(vp); 2002 2003 out: 2004 ntfs_toupper_usecount++; 2005 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2006 return (error); 2007 } 2008 2009 /* 2010 * lower the use count and if it reaches zero, free the memory 2011 * tied by toupper table 2012 */ 2013 void 2014 ntfs_toupper_unuse() 2015 { 2016 /* get exclusive access */ 2017 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 2018 2019 ntfs_toupper_usecount--; 2020 if (ntfs_toupper_usecount == 0) { 2021 free(ntfs_toupper_tab, M_NTFSRDATA); 2022 ntfs_toupper_tab = NULL; 2023 } 2024 #ifdef DIAGNOSTIC 2025 else if (ntfs_toupper_usecount < 0) { 2026 panic("ntfs_toupper_unuse(): use count negative: %d\n", 2027 ntfs_toupper_usecount); 2028 } 2029 #endif 2030 2031 /* release the lock */ 2032 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2033 } 2034 2035 int 2036 ntfs_u28_init( 2037 struct ntfsmount *ntmp, 2038 wchar *u2w, 2039 char *cs_local, 2040 char *cs_ntfs) 2041 { 2042 char ** u28; 2043 int i, j, h, l; 2044 2045 if (ntfs_iconv && cs_local) { 2046 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l); 2047 return (0); 2048 } 2049 2050 u28 = malloc(256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2051 2052 for (i=0; i<256; i++) { 2053 h = (u2w[i] >> 8) & 0xFF; 2054 l = (u2w[i]) &0xFF; 2055 2056 if (u28[h] == NULL) { 2057 u28[h] = malloc(256 * sizeof(char), M_TEMP, M_WAITOK); 2058 for (j=0; j<256; j++) 2059 u28[h][j] = '_'; 2060 } 2061 2062 u28[h][l] = i & 0xFF; 2063 } 2064 2065 ntmp->ntm_u28 = u28; 2066 2067 return (0); 2068 } 2069 2070 int 2071 ntfs_u28_uninit(struct ntfsmount *ntmp) 2072 { 2073 char ** u28; 2074 int i; 2075 2076 if (ntmp->ntm_u28 == NULL) { 2077 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2078 ntfs_iconv->close(ntmp->ntm_ic_u2l); 2079 } 2080 return (0); 2081 } 2082 2083 u28 = ntmp->ntm_u28; 2084 2085 for (i=0; i<256; i++) 2086 if (u28[i] != NULL) 2087 free(u28[i], M_TEMP); 2088 2089 free(u28, M_TEMP); 2090 2091 return (0); 2092 } 2093 2094 int 2095 ntfs_82u_init( 2096 struct ntfsmount *ntmp, 2097 char *cs_local, 2098 char *cs_ntfs) 2099 { 2100 wchar * _82u; 2101 int i; 2102 2103 if (ntfs_iconv && cs_local) { 2104 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u); 2105 return (0); 2106 } 2107 2108 _82u = malloc(256 * sizeof(wchar), M_TEMP, M_WAITOK); 2109 2110 for (i=0; i<256; i++) 2111 _82u[i] = i; 2112 2113 ntmp->ntm_82u = _82u; 2114 2115 return (0); 2116 } 2117 2118 int 2119 ntfs_82u_uninit(struct ntfsmount *ntmp) 2120 { 2121 2122 if (ntmp->ntm_82u == NULL) { 2123 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2124 ntfs_iconv->close(ntmp->ntm_ic_l2u); 2125 } 2126 return (0); 2127 } 2128 2129 free(ntmp->ntm_82u, M_TEMP); 2130 return (0); 2131 } 2132 2133 /* 2134 * maps the Unicode char to 8bit equivalent 2135 * XXX currently only gets lower 8bit from the Unicode char 2136 * and substitutes a '_' for it if the result would be '\0'; 2137 * something better has to be definitely though out 2138 */ 2139 wchar 2140 ntfs_u28( 2141 struct ntfsmount *ntmp, 2142 wchar wc) 2143 { 2144 char *p, *outp, inbuf[3], outbuf[3]; 2145 size_t ilen, olen; 2146 2147 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2148 ilen = olen = 2; 2149 2150 inbuf[0] = (char)(wc>>8); 2151 inbuf[1] = (char)wc; 2152 inbuf[2] = '\0'; 2153 p = inbuf; 2154 outp = outbuf; 2155 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, (const char **)&p, &ilen, 2156 &outp, &olen); 2157 if (olen == 1) { 2158 return ((wchar)(outbuf[0]&0xFF)); 2159 } else if (olen == 0) { 2160 return ((wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF))); 2161 } 2162 return ('?'); 2163 } 2164 2165 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2166 if (p == NULL) 2167 return ('_'); 2168 return (p[wc&0xFF]&0xFF); 2169 } 2170 2171 wchar 2172 ntfs_82u( 2173 struct ntfsmount *ntmp, 2174 wchar wc, 2175 int *len) 2176 { 2177 char *p, *outp, inbuf[3], outbuf[3]; 2178 wchar uc; 2179 size_t ilen, olen; 2180 2181 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2182 ilen = (size_t)*len; 2183 olen = 2; 2184 2185 inbuf[0] = (char)(wc>>8); 2186 inbuf[1] = (char)wc; 2187 inbuf[2] = '\0'; 2188 p = inbuf; 2189 outp = outbuf; 2190 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, (const char **)&p, &ilen, 2191 &outp, &olen); 2192 *len -= (int)ilen; 2193 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)); 2194 2195 return (uc); 2196 } 2197 2198 if (ntmp->ntm_82u != NULL) 2199 return (ntmp->ntm_82u[wc&0xFF]); 2200 2201 return ('?'); 2202 } 2203
Cache object: f4f4d256d286fd517f858f0bc5b4e1f2
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