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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/8.4/sys/fs/ntfs/ntfs_subr.c 230206 2012-01-16 08:31:32Z 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; 281 282 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 const char *astrp = astr; 670 char tmpbuf[5]; 671 int len, res; 672 size_t i, j, mbstrlen = astrlen; 673 674 if (ntmp->ntm_ic_l2u) { 675 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++) { 676 len = 4; 677 res = ((int) NTFS_TOUPPER(ustr[i])) - 678 ((int)NTFS_TOUPPER(NTFS_82U(astrp, &len))); 679 astrp += len; 680 j += len; 681 mbstrlen -= len - 1; 682 683 if (res) 684 return res; 685 } 686 } else { 687 /* 688 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 689 * symbols not covered by translation table 690 */ 691 for (i = 0; i < ustrlen && i < astrlen; i++) { 692 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) - 693 ((int)NTFS_TOUPPER(NTFS_82U(astrp, &len))); 694 astrp++; 695 if (res) 696 return res; 697 } 698 } 699 return (ustrlen - mbstrlen); 700 } 701 702 /* 703 * Compare unicode and ascii string case sens. 704 */ 705 static int 706 ntfs_uastrcmp(ntmp, ustr, ustrlen, astr, astrlen) 707 struct ntfsmount *ntmp; 708 const wchar *ustr; 709 size_t ustrlen; 710 const char *astr; 711 size_t astrlen; 712 { 713 char *c, tmpbuf[5]; 714 size_t i, j, mbstrlen = astrlen; 715 int res; 716 717 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, mbstrlen++) { 718 c = NTFS_U28(ustr[i]); 719 while (*c != '\0') { 720 res = (int) (*c++ - astr[j++]); 721 if (res) 722 return res; 723 mbstrlen--; 724 } 725 } 726 return (ustrlen - mbstrlen); 727 } 728 729 /* 730 * Search fnode in ntnode, if not found allocate and preinitialize. 731 * 732 * ntnode should be locked on entry. 733 */ 734 int 735 ntfs_fget( 736 struct ntfsmount *ntmp, 737 struct ntnode *ip, 738 int attrtype, 739 char *attrname, 740 struct fnode **fpp) 741 { 742 struct fnode *fp; 743 744 dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n", 745 ip->i_number,attrtype, attrname?attrname:"")); 746 *fpp = NULL; 747 LIST_FOREACH(fp, &ip->i_fnlist, f_fnlist){ 748 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 749 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 750 751 if ((attrtype == fp->f_attrtype) && 752 ((!attrname && !fp->f_attrname) || 753 (attrname && fp->f_attrname && 754 !strcmp(attrname,fp->f_attrname)))){ 755 dprintf(("ntfs_fget: found existed: %p\n",fp)); 756 *fpp = fp; 757 } 758 } 759 760 if (*fpp) 761 return (0); 762 763 fp = malloc(sizeof(struct fnode), M_NTFSFNODE, 764 M_WAITOK | M_ZERO); 765 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 766 767 fp->f_ip = ip; 768 if (attrname) { 769 fp->f_flag |= FN_AATTRNAME; 770 fp->f_attrname = malloc(strlen(attrname)+1, M_TEMP, M_WAITOK); 771 strcpy(fp->f_attrname, attrname); 772 } else 773 fp->f_attrname = NULL; 774 fp->f_attrtype = attrtype; 775 776 ntfs_ntref(ip); 777 778 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 779 780 *fpp = fp; 781 782 return (0); 783 } 784 785 /* 786 * Deallocate fnode, remove it from ntnode's fnode list. 787 * 788 * ntnode should be locked. 789 */ 790 void 791 ntfs_frele( 792 struct fnode *fp) 793 { 794 struct ntnode *ip = FTONT(fp); 795 796 dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip)); 797 798 dprintf(("ntfs_frele: deallocating fnode\n")); 799 LIST_REMOVE(fp,f_fnlist); 800 if (fp->f_flag & FN_AATTRNAME) 801 free(fp->f_attrname, M_TEMP); 802 if (fp->f_dirblbuf) 803 free(fp->f_dirblbuf, M_NTFSDIR); 804 free(fp, M_NTFSFNODE); 805 ntfs_ntrele(ip); 806 } 807 808 /* 809 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 810 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 811 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 812 */ 813 static int 814 ntfs_ntlookupattr( 815 struct ntfsmount * ntmp, 816 const char * name, 817 int namelen, 818 int *attrtype, 819 char **attrname) 820 { 821 const char *sys; 822 size_t syslen, i; 823 struct ntvattrdef *adp; 824 825 if (namelen == 0) 826 return (0); 827 828 if (name[0] == '$') { 829 sys = name; 830 for (syslen = 0; syslen < namelen; syslen++) { 831 if(sys[syslen] == ':') { 832 name++; 833 namelen--; 834 break; 835 } 836 } 837 name += syslen; 838 namelen -= syslen; 839 840 adp = ntmp->ntm_ad; 841 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 842 if (syslen != adp->ad_namelen || 843 strncmp(sys, adp->ad_name, syslen) != 0) 844 continue; 845 846 *attrtype = adp->ad_type; 847 goto out; 848 } 849 return (ENOENT); 850 } else 851 *attrtype = NTFS_A_DATA; 852 853 out: 854 if (namelen) { 855 (*attrname) = malloc(namelen, M_TEMP, M_WAITOK); 856 memcpy((*attrname), name, namelen); 857 (*attrname)[namelen] = '\0'; 858 } 859 860 return (0); 861 } 862 863 /* 864 * Lookup specifed node for filename, matching cnp, 865 * return fnode filled. 866 */ 867 int 868 ntfs_ntlookupfile( 869 struct ntfsmount * ntmp, 870 struct vnode * vp, 871 struct componentname * cnp, 872 struct vnode ** vpp) 873 { 874 struct fnode *fp = VTOF(vp); 875 struct ntnode *ip = FTONT(fp); 876 struct ntvattr *vap; /* Root attribute */ 877 cn_t cn; /* VCN in current attribute */ 878 caddr_t rdbuf; /* Buffer to read directory's blocks */ 879 u_int32_t blsize; 880 u_int64_t rdsize; /* Length of data to read from current block */ 881 struct attr_indexentry *iep; 882 int error, res, anamelen, fnamelen; 883 const char *fname,*aname; 884 u_int32_t aoff; 885 int attrtype = NTFS_A_DATA; 886 char *attrname = NULL; 887 struct fnode *nfp; 888 struct vnode *nvp; 889 enum vtype f_type; 890 891 error = ntfs_ntget(ip); 892 if (error) 893 return (error); 894 895 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 896 if (error || (vap->va_flag & NTFS_AF_INRUN)) 897 return (ENOTDIR); 898 899 blsize = vap->va_a_iroot->ir_size; 900 rdsize = vap->va_datalen; 901 902 /* 903 * Divide file name into: foofilefoofilefoofile[:attrspec] 904 * Store like this: fname:fnamelen [aname:anamelen] 905 */ 906 fname = cnp->cn_nameptr; 907 aname = NULL; 908 anamelen = 0; 909 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 910 if(fname[fnamelen] == ':') { 911 aname = fname + fnamelen + 1; 912 anamelen = cnp->cn_namelen - fnamelen - 1; 913 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 914 fname, fnamelen, aname, anamelen)); 915 break; 916 } 917 918 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %jd\n", blsize, rdsize)); 919 920 rdbuf = malloc(blsize, M_TEMP, M_WAITOK); 921 922 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 923 0, rdsize, rdbuf, NULL); 924 if (error) 925 goto fail; 926 927 aoff = sizeof(struct attr_indexroot); 928 929 do { 930 iep = (struct attr_indexentry *) (rdbuf + aoff); 931 932 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 933 aoff += iep->reclen, 934 iep = (struct attr_indexentry *) (rdbuf + aoff)) 935 { 936 ddprintf(("scan: %d, %d\n", 937 (u_int32_t) iep->ie_number, 938 (u_int32_t) iep->ie_fnametype)); 939 940 /* check the name - the case-insensitible check 941 * has to come first, to break from this for loop 942 * if needed, so we can dive correctly */ 943 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 944 fname, fnamelen); 945 if (res > 0) break; 946 if (res < 0) continue; 947 948 if (iep->ie_fnametype == 0 || 949 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 950 { 951 res = NTFS_UASTRCMP(iep->ie_fname, 952 iep->ie_fnamelen, fname, fnamelen); 953 if (res != 0) continue; 954 } 955 956 if (aname) { 957 error = ntfs_ntlookupattr(ntmp, 958 aname, anamelen, 959 &attrtype, &attrname); 960 if (error) 961 goto fail; 962 } 963 964 /* Check if we've found ourself */ 965 if ((iep->ie_number == ip->i_number) && 966 (attrtype == fp->f_attrtype) && 967 ((!attrname && !fp->f_attrname) || 968 (attrname && fp->f_attrname && 969 !strcmp(attrname, fp->f_attrname)))) 970 { 971 VREF(vp); 972 *vpp = vp; 973 error = 0; 974 goto fail; 975 } 976 977 /* vget node, but don't load it */ 978 error = ntfs_vgetex(ntmp->ntm_mountp, 979 iep->ie_number, attrtype, attrname, 980 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 981 curthread, &nvp); 982 983 /* free the buffer returned by ntfs_ntlookupattr() */ 984 if (attrname) { 985 free(attrname, M_TEMP); 986 attrname = NULL; 987 } 988 989 if (error) 990 goto fail; 991 992 nfp = VTOF(nvp); 993 994 if (nfp->f_flag & FN_VALID) { 995 *vpp = nvp; 996 goto fail; 997 } 998 999 nfp->f_fflag = iep->ie_fflag; 1000 nfp->f_pnumber = iep->ie_fpnumber; 1001 nfp->f_times = iep->ie_ftimes; 1002 1003 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 1004 (nfp->f_attrtype == NTFS_A_DATA) && 1005 (nfp->f_attrname == NULL)) 1006 f_type = VDIR; 1007 else 1008 f_type = VREG; 1009 1010 nvp->v_type = f_type; 1011 1012 if ((nfp->f_attrtype == NTFS_A_DATA) && 1013 (nfp->f_attrname == NULL)) 1014 { 1015 /* Opening default attribute */ 1016 nfp->f_size = iep->ie_fsize; 1017 nfp->f_allocated = iep->ie_fallocated; 1018 nfp->f_flag |= FN_PRELOADED; 1019 } else { 1020 error = ntfs_filesize(ntmp, nfp, 1021 &nfp->f_size, &nfp->f_allocated); 1022 if (error) { 1023 vput(nvp); 1024 goto fail; 1025 } 1026 } 1027 1028 nfp->f_flag &= ~FN_VALID; 1029 *vpp = nvp; 1030 goto fail; 1031 } 1032 1033 /* Dive if possible */ 1034 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1035 dprintf(("ntfs_ntlookupfile: diving\n")); 1036 1037 cn = *(cn_t *) (rdbuf + aoff + 1038 iep->reclen - sizeof(cn_t)); 1039 rdsize = blsize; 1040 1041 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1042 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1043 if (error) 1044 goto fail; 1045 1046 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1047 rdbuf, rdsize); 1048 if (error) 1049 goto fail; 1050 1051 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1052 0x18); 1053 } else { 1054 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1055 error = ENOENT; 1056 break; 1057 } 1058 } while (1); 1059 1060 dprintf(("finish\n")); 1061 1062 fail: 1063 if (attrname) free(attrname, M_TEMP); 1064 ntfs_ntvattrrele(vap); 1065 ntfs_ntput(ip); 1066 free(rdbuf, M_TEMP); 1067 return (error); 1068 } 1069 1070 /* 1071 * Check if name type is permitted to show. 1072 */ 1073 int 1074 ntfs_isnamepermitted( 1075 struct ntfsmount * ntmp, 1076 struct attr_indexentry * iep) 1077 { 1078 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1079 return 1; 1080 1081 switch (iep->ie_fnametype) { 1082 case 2: 1083 ddprintf(("ntfs_isnamepermitted: skipped DOS name\n")); 1084 return 0; 1085 case 0: case 1: case 3: 1086 return 1; 1087 default: 1088 printf("ntfs_isnamepermitted: " \ 1089 "WARNING! Unknown file name type: %d\n", 1090 iep->ie_fnametype); 1091 break; 1092 } 1093 return 0; 1094 } 1095 1096 /* 1097 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1098 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1099 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1100 * fnode, so we can skip toward record number num almost immediatly. 1101 * Anyway this is rather slow routine. The problem is that we don't know 1102 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1103 */ 1104 int 1105 ntfs_ntreaddir( 1106 struct ntfsmount * ntmp, 1107 struct fnode * fp, 1108 u_int32_t num, 1109 struct attr_indexentry ** riepp) 1110 { 1111 struct ntnode *ip = FTONT(fp); 1112 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1113 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1114 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1115 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1116 u_int8_t *bmp = NULL; /* Bitmap */ 1117 u_int32_t blsize; /* Index allocation size (2048) */ 1118 u_int32_t rdsize; /* Length of data to read */ 1119 u_int32_t attrnum; /* Current attribute type */ 1120 u_int32_t cpbl = 1; /* Clusters per directory block */ 1121 u_int32_t blnum; 1122 struct attr_indexentry *iep; 1123 int error = ENOENT; 1124 u_int32_t aoff, cnum; 1125 1126 dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num)); 1127 error = ntfs_ntget(ip); 1128 if (error) 1129 return (error); 1130 1131 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1132 if (error) 1133 return (ENOTDIR); 1134 1135 if (fp->f_dirblbuf == NULL) { 1136 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1137 fp->f_dirblbuf = malloc(max(vap->va_datalen,fp->f_dirblsz), 1138 M_NTFSDIR, M_WAITOK); 1139 } 1140 1141 blsize = fp->f_dirblsz; 1142 rdbuf = fp->f_dirblbuf; 1143 1144 dprintf(("ntfs_ntreaddir: rdbuf: %p, blsize: %d\n", rdbuf, blsize)); 1145 1146 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1147 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1148 0, &bmvap); 1149 if (error) { 1150 error = ENOTDIR; 1151 goto fail; 1152 } 1153 bmp = malloc(bmvap->va_datalen, M_TEMP, M_WAITOK); 1154 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1155 bmvap->va_datalen, bmp, NULL); 1156 if (error) 1157 goto fail; 1158 1159 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1160 0, &iavap); 1161 if (error) { 1162 error = ENOTDIR; 1163 goto fail; 1164 } 1165 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1166 dprintf(("ntfs_ntreaddir: indexalloc: %jd, cpbl: %d\n", 1167 iavap->va_datalen, cpbl)); 1168 } else { 1169 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1170 iavap = bmvap = NULL; 1171 bmp = NULL; 1172 } 1173 1174 /* Try use previous values */ 1175 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1176 attrnum = fp->f_lastdattr; 1177 aoff = fp->f_lastdoff; 1178 blnum = fp->f_lastdblnum; 1179 cnum = fp->f_lastdnum; 1180 } else { 1181 attrnum = NTFS_A_INDXROOT; 1182 aoff = sizeof(struct attr_indexroot); 1183 blnum = 0; 1184 cnum = 0; 1185 } 1186 1187 do { 1188 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1189 attrnum, (u_int32_t) blnum, cnum, num, aoff)); 1190 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1191 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1192 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1193 if (error) 1194 goto fail; 1195 1196 if (attrnum == NTFS_A_INDX) { 1197 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1198 rdbuf, rdsize); 1199 if (error) 1200 goto fail; 1201 } 1202 if (aoff == 0) 1203 aoff = (attrnum == NTFS_A_INDX) ? 1204 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1205 sizeof(struct attr_indexroot); 1206 1207 iep = (struct attr_indexentry *) (rdbuf + aoff); 1208 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1209 aoff += iep->reclen, 1210 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1211 { 1212 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1213 1214 if (cnum >= num) { 1215 fp->f_lastdnum = cnum; 1216 fp->f_lastdoff = aoff; 1217 fp->f_lastdblnum = blnum; 1218 fp->f_lastdattr = attrnum; 1219 1220 *riepp = iep; 1221 1222 error = 0; 1223 goto fail; 1224 } 1225 cnum++; 1226 } 1227 1228 if (iavap) { 1229 if (attrnum == NTFS_A_INDXROOT) 1230 blnum = 0; 1231 else 1232 blnum++; 1233 1234 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1235 if (bmp[blnum >> 3] & (1 << (blnum & 7))) 1236 break; 1237 blnum++; 1238 } 1239 1240 attrnum = NTFS_A_INDX; 1241 aoff = 0; 1242 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1243 break; 1244 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum)); 1245 } 1246 } while (iavap); 1247 1248 *riepp = NULL; 1249 fp->f_lastdnum = 0; 1250 1251 fail: 1252 if (vap) 1253 ntfs_ntvattrrele(vap); 1254 if (bmvap) 1255 ntfs_ntvattrrele(bmvap); 1256 if (iavap) 1257 ntfs_ntvattrrele(iavap); 1258 if (bmp) 1259 free(bmp, M_TEMP); 1260 ntfs_ntput(ip); 1261 return (error); 1262 } 1263 1264 /* 1265 * Convert NTFS times that are in 100 ns units and begins from 1266 * 1601 Jan 1 into unix times. 1267 */ 1268 struct timespec 1269 ntfs_nttimetounix( 1270 u_int64_t nt) 1271 { 1272 struct timespec t; 1273 1274 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1275 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1276 t.tv_sec = nt / (1000 * 1000 * 10) - 1277 369LL * 365LL * 24LL * 60LL * 60LL - 1278 89LL * 1LL * 24LL * 60LL * 60LL; 1279 return (t); 1280 } 1281 1282 /* 1283 * Get file times from NTFS_A_NAME attribute. 1284 */ 1285 int 1286 ntfs_times( 1287 struct ntfsmount * ntmp, 1288 struct ntnode * ip, 1289 ntfs_times_t * tm) 1290 { 1291 struct ntvattr *vap; 1292 int error; 1293 1294 dprintf(("ntfs_times: ino: %d...\n", ip->i_number)); 1295 1296 error = ntfs_ntget(ip); 1297 if (error) 1298 return (error); 1299 1300 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1301 if (error) { 1302 ntfs_ntput(ip); 1303 return (error); 1304 } 1305 *tm = vap->va_a_name->n_times; 1306 ntfs_ntvattrrele(vap); 1307 ntfs_ntput(ip); 1308 1309 return (0); 1310 } 1311 1312 /* 1313 * Get file sizes from corresponding attribute. 1314 * 1315 * ntnode under fnode should be locked. 1316 */ 1317 int 1318 ntfs_filesize( 1319 struct ntfsmount * ntmp, 1320 struct fnode * fp, 1321 u_int64_t * size, 1322 u_int64_t * bytes) 1323 { 1324 struct ntvattr *vap; 1325 struct ntnode *ip = FTONT(fp); 1326 u_int64_t sz, bn; 1327 int error; 1328 1329 dprintf(("ntfs_filesize: ino: %d\n", ip->i_number)); 1330 1331 error = ntfs_ntvattrget(ntmp, ip, 1332 fp->f_attrtype, fp->f_attrname, 0, &vap); 1333 if (error) 1334 return (error); 1335 1336 bn = vap->va_allocated; 1337 sz = vap->va_datalen; 1338 1339 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1340 (u_int32_t) sz, (u_int32_t) bn)); 1341 1342 if (size) 1343 *size = sz; 1344 if (bytes) 1345 *bytes = bn; 1346 1347 ntfs_ntvattrrele(vap); 1348 1349 return (0); 1350 } 1351 1352 /* 1353 * This is one of write routine. 1354 */ 1355 int 1356 ntfs_writeattr_plain( 1357 struct ntfsmount * ntmp, 1358 struct ntnode * ip, 1359 u_int32_t attrnum, 1360 char *attrname, 1361 off_t roff, 1362 size_t rsize, 1363 void *rdata, 1364 size_t * initp, 1365 struct uio *uio) 1366 { 1367 size_t init; 1368 int error = 0; 1369 off_t off = roff, left = rsize, towrite; 1370 caddr_t data = rdata; 1371 struct ntvattr *vap; 1372 *initp = 0; 1373 1374 while (left) { 1375 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1376 ntfs_btocn(off), &vap); 1377 if (error) 1378 return (error); 1379 towrite = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1380 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1381 (u_int32_t) off, (u_int32_t) towrite, 1382 (u_int32_t) vap->va_vcnstart, 1383 (u_int32_t) vap->va_vcnend)); 1384 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1385 off - ntfs_cntob(vap->va_vcnstart), 1386 towrite, data, &init, uio); 1387 if (error) { 1388 printf("ntfs_writeattr_plain: " \ 1389 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1390 (u_int32_t) off, (u_int32_t) towrite); 1391 printf("ntfs_writeattr_plain: attrib: %d - %d\n", 1392 (u_int32_t) vap->va_vcnstart, 1393 (u_int32_t) vap->va_vcnend); 1394 ntfs_ntvattrrele(vap); 1395 break; 1396 } 1397 ntfs_ntvattrrele(vap); 1398 left -= towrite; 1399 off += towrite; 1400 data = data + towrite; 1401 *initp += init; 1402 } 1403 1404 return (error); 1405 } 1406 1407 /* 1408 * This is one of write routine. 1409 * 1410 * ntnode should be locked. 1411 */ 1412 int 1413 ntfs_writentvattr_plain( 1414 struct ntfsmount * ntmp, 1415 struct ntnode * ip, 1416 struct ntvattr * vap, 1417 off_t roff, 1418 size_t rsize, 1419 void *rdata, 1420 size_t * initp, 1421 struct uio *uio) 1422 { 1423 int error = 0; 1424 off_t off; 1425 int cnt; 1426 cn_t ccn, ccl, cn, left, cl; 1427 caddr_t data = rdata; 1428 struct buf *bp; 1429 size_t tocopy; 1430 1431 *initp = 0; 1432 1433 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1434 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1435 return ENOTTY; 1436 } 1437 1438 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1439 vap->va_vruncnt)); 1440 1441 off = roff; 1442 left = rsize; 1443 ccl = 0; 1444 ccn = 0; 1445 cnt = 0; 1446 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1447 ccn = vap->va_vruncn[cnt]; 1448 ccl = vap->va_vruncl[cnt]; 1449 1450 ddprintf(("ntfs_writentvattr_plain: " \ 1451 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1452 (u_int32_t) left, (u_int32_t) ccn, \ 1453 (u_int32_t) ccl, (u_int32_t) off)); 1454 1455 if (ntfs_cntob(ccl) < off) { 1456 off -= ntfs_cntob(ccl); 1457 cnt++; 1458 continue; 1459 } 1460 if (!ccn && ip->i_number != NTFS_BOOTINO) 1461 continue; /* XXX */ 1462 1463 ccl -= ntfs_btocn(off); 1464 cn = ccn + ntfs_btocn(off); 1465 off = ntfs_btocnoff(off); 1466 1467 while (left && ccl) { 1468 /* 1469 * Always read and write single clusters at a time - 1470 * we need to avoid requesting differently-sized 1471 * blocks at the same disk offsets to avoid 1472 * confusing the buffer cache. 1473 */ 1474 tocopy = MIN(left, ntfs_cntob(1) - off); 1475 cl = ntfs_btocl(tocopy + off); 1476 KASSERT(cl == 1 && tocopy <= ntfs_cntob(1), 1477 ("single cluster limit mistake")); 1478 ddprintf(("ntfs_writentvattr_plain: write: " \ 1479 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1480 (u_int32_t) cn, (u_int32_t) cl, 1481 (u_int32_t) off, (u_int32_t) tocopy, 1482 (u_int32_t) left)); 1483 if ((off == 0) && (tocopy == ntfs_cntob(cl))) 1484 { 1485 bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn), 1486 ntfs_cntob(cl), 0, 0, 0); 1487 clrbuf(bp); 1488 } else { 1489 error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn), 1490 ntfs_cntob(cl), NOCRED, &bp); 1491 if (error) { 1492 brelse(bp); 1493 return (error); 1494 } 1495 } 1496 if (uio) 1497 uiomove(bp->b_data + off, tocopy, uio); 1498 else 1499 memcpy(bp->b_data + off, data, tocopy); 1500 bawrite(bp); 1501 data = data + tocopy; 1502 *initp += tocopy; 1503 off = 0; 1504 left -= tocopy; 1505 cn += cl; 1506 ccl -= cl; 1507 } 1508 } 1509 1510 if (left) { 1511 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1512 error = EINVAL; 1513 } 1514 1515 return (error); 1516 } 1517 1518 /* 1519 * This is one of read routines. 1520 * 1521 * ntnode should be locked. 1522 */ 1523 int 1524 ntfs_readntvattr_plain( 1525 struct ntfsmount * ntmp, 1526 struct ntnode * ip, 1527 struct ntvattr * vap, 1528 off_t roff, 1529 size_t rsize, 1530 void *rdata, 1531 size_t * initp, 1532 struct uio *uio) 1533 { 1534 int error = 0; 1535 off_t off; 1536 1537 *initp = 0; 1538 if (vap->va_flag & NTFS_AF_INRUN) { 1539 int cnt; 1540 cn_t ccn, ccl, cn, left, cl; 1541 caddr_t data = rdata; 1542 struct buf *bp; 1543 size_t tocopy; 1544 1545 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1546 vap->va_vruncnt)); 1547 1548 off = roff; 1549 left = rsize; 1550 ccl = 0; 1551 ccn = 0; 1552 cnt = 0; 1553 while (left && (cnt < vap->va_vruncnt)) { 1554 ccn = vap->va_vruncn[cnt]; 1555 ccl = vap->va_vruncl[cnt]; 1556 1557 ddprintf(("ntfs_readntvattr_plain: " \ 1558 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1559 (u_int32_t) left, (u_int32_t) ccn, \ 1560 (u_int32_t) ccl, (u_int32_t) off)); 1561 1562 if (ntfs_cntob(ccl) < off) { 1563 off -= ntfs_cntob(ccl); 1564 cnt++; 1565 continue; 1566 } 1567 if (ccn || ip->i_number == NTFS_BOOTINO) { 1568 ccl -= ntfs_btocn(off); 1569 cn = ccn + ntfs_btocn(off); 1570 off = ntfs_btocnoff(off); 1571 1572 while (left && ccl) { 1573 /* 1574 * Always read single clusters at a 1575 * time - we need to avoid reading 1576 * differently-sized blocks at the 1577 * same disk offsets to avoid 1578 * confusing the buffer cache. 1579 */ 1580 tocopy = MIN(left, 1581 ntfs_cntob(1) - off); 1582 cl = ntfs_btocl(tocopy + off); 1583 KASSERT(cl == 1 && 1584 tocopy <= ntfs_cntob(1), 1585 ("single cluster limit mistake")); 1586 1587 ddprintf(("ntfs_readntvattr_plain: " \ 1588 "read: cn: 0x%x cl: %d, " \ 1589 "off: %d len: %d, left: %d\n", 1590 (u_int32_t) cn, 1591 (u_int32_t) cl, 1592 (u_int32_t) off, 1593 (u_int32_t) tocopy, 1594 (u_int32_t) left)); 1595 error = bread(ntmp->ntm_devvp, 1596 ntfs_cntobn(cn), 1597 ntfs_cntob(cl), 1598 NOCRED, &bp); 1599 if (error) { 1600 brelse(bp); 1601 return (error); 1602 } 1603 if (uio) { 1604 uiomove(bp->b_data + off, 1605 tocopy, uio); 1606 } else { 1607 memcpy(data, bp->b_data + off, 1608 tocopy); 1609 } 1610 brelse(bp); 1611 data = data + tocopy; 1612 *initp += tocopy; 1613 off = 0; 1614 left -= tocopy; 1615 cn += cl; 1616 ccl -= cl; 1617 } 1618 } else { 1619 tocopy = MIN(left, ntfs_cntob(ccl) - off); 1620 ddprintf(("ntfs_readntvattr_plain: " 1621 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1622 " len: %d, left: %d\n", 1623 (u_int32_t) ccn, (u_int32_t) ccl, 1624 (u_int32_t) off, (u_int32_t) tocopy, 1625 (u_int32_t) left)); 1626 left -= tocopy; 1627 off = 0; 1628 if (uio) { 1629 size_t remains = tocopy; 1630 for(; remains; remains--) 1631 uiomove("", 1, uio); 1632 } else 1633 bzero(data, tocopy); 1634 data = data + tocopy; 1635 } 1636 cnt++; 1637 } 1638 if (left) { 1639 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1640 error = E2BIG; 1641 } 1642 } else { 1643 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1644 if (uio) 1645 uiomove(vap->va_datap + roff, rsize, uio); 1646 else 1647 memcpy(rdata, vap->va_datap + roff, rsize); 1648 *initp += rsize; 1649 } 1650 1651 return (error); 1652 } 1653 1654 /* 1655 * This is one of read routines. 1656 */ 1657 int 1658 ntfs_readattr_plain( 1659 struct ntfsmount * ntmp, 1660 struct ntnode * ip, 1661 u_int32_t attrnum, 1662 char *attrname, 1663 off_t roff, 1664 size_t rsize, 1665 void *rdata, 1666 size_t * initp, 1667 struct uio *uio) 1668 { 1669 size_t init; 1670 int error = 0; 1671 off_t off = roff, left = rsize, toread; 1672 caddr_t data = rdata; 1673 struct ntvattr *vap; 1674 *initp = 0; 1675 1676 while (left) { 1677 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1678 ntfs_btocn(off), &vap); 1679 if (error) 1680 return (error); 1681 toread = MIN(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1682 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1683 (u_int32_t) off, (u_int32_t) toread, 1684 (u_int32_t) vap->va_vcnstart, 1685 (u_int32_t) vap->va_vcnend)); 1686 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1687 off - ntfs_cntob(vap->va_vcnstart), 1688 toread, data, &init, uio); 1689 if (error) { 1690 printf("ntfs_readattr_plain: " \ 1691 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1692 (u_int32_t) off, (u_int32_t) toread); 1693 printf("ntfs_readattr_plain: attrib: %d - %d\n", 1694 (u_int32_t) vap->va_vcnstart, 1695 (u_int32_t) vap->va_vcnend); 1696 ntfs_ntvattrrele(vap); 1697 break; 1698 } 1699 ntfs_ntvattrrele(vap); 1700 left -= toread; 1701 off += toread; 1702 data = data + toread; 1703 *initp += init; 1704 } 1705 1706 return (error); 1707 } 1708 1709 /* 1710 * This is one of read routines. 1711 */ 1712 int 1713 ntfs_readattr( 1714 struct ntfsmount * ntmp, 1715 struct ntnode * ip, 1716 u_int32_t attrnum, 1717 char *attrname, 1718 off_t roff, 1719 size_t rsize, 1720 void *rdata, 1721 struct uio *uio) 1722 { 1723 int error = 0; 1724 struct ntvattr *vap; 1725 size_t init; 1726 1727 ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n", 1728 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1729 1730 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1731 if (error) 1732 return (error); 1733 1734 if ((roff > vap->va_datalen) || 1735 (roff + rsize > vap->va_datalen)) { 1736 ddprintf(("ntfs_readattr: offset too big\n")); 1737 ntfs_ntvattrrele(vap); 1738 return (E2BIG); 1739 } 1740 if (vap->va_compression && vap->va_compressalg) { 1741 u_int8_t *cup; 1742 u_int8_t *uup; 1743 off_t off = roff, left = rsize, tocopy; 1744 caddr_t data = rdata; 1745 cn_t cn; 1746 1747 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1748 vap->va_compressalg)); 1749 1750 cup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1751 M_NTFSDECOMP, M_WAITOK); 1752 uup = malloc(ntfs_cntob(NTFS_COMPUNIT_CL), 1753 M_NTFSDECOMP, M_WAITOK); 1754 1755 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1756 off = roff - ntfs_cntob(cn); 1757 1758 while (left) { 1759 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1760 attrname, ntfs_cntob(cn), 1761 ntfs_cntob(NTFS_COMPUNIT_CL), 1762 cup, &init, NULL); 1763 if (error) 1764 break; 1765 1766 tocopy = MIN(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1767 1768 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1769 if (uio) 1770 uiomove(cup + off, tocopy, uio); 1771 else 1772 memcpy(data, cup + off, tocopy); 1773 } else if (init == 0) { 1774 if (uio) { 1775 size_t remains = tocopy; 1776 for(; remains; remains--) 1777 uiomove("", 1, uio); 1778 } 1779 else 1780 bzero(data, tocopy); 1781 } else { 1782 error = ntfs_uncompunit(ntmp, uup, cup); 1783 if (error) 1784 break; 1785 if (uio) 1786 uiomove(uup + off, tocopy, uio); 1787 else 1788 memcpy(data, uup + off, tocopy); 1789 } 1790 1791 left -= tocopy; 1792 data = data + tocopy; 1793 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1794 cn += NTFS_COMPUNIT_CL; 1795 } 1796 1797 free(uup, M_NTFSDECOMP); 1798 free(cup, M_NTFSDECOMP); 1799 } else 1800 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1801 roff, rsize, rdata, &init, uio); 1802 ntfs_ntvattrrele(vap); 1803 return (error); 1804 } 1805 1806 #if 0 1807 int 1808 ntfs_parserun( 1809 cn_t * cn, 1810 cn_t * cl, 1811 u_int8_t * run, 1812 u_long len, 1813 u_long *off) 1814 { 1815 u_int8_t sz; 1816 int i; 1817 1818 if (NULL == run) { 1819 printf("ntfs_parsetun: run == NULL\n"); 1820 return (EINVAL); 1821 } 1822 sz = run[(*off)++]; 1823 if (0 == sz) { 1824 printf("ntfs_parserun: trying to go out of run\n"); 1825 return (E2BIG); 1826 } 1827 *cl = 0; 1828 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1829 printf("ntfs_parserun: " \ 1830 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1831 sz, len, *off); 1832 return (EINVAL); 1833 } 1834 for (i = 0; i < (sz & 0xF); i++) 1835 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1836 1837 sz >>= 4; 1838 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1839 printf("ntfs_parserun: " \ 1840 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1841 sz, len, *off); 1842 return (EINVAL); 1843 } 1844 for (i = 0; i < (sz & 0xF); i++) 1845 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1846 1847 return (0); 1848 } 1849 #endif 1850 1851 /* 1852 * Process fixup routine on given buffer. 1853 */ 1854 int 1855 ntfs_procfixups( 1856 struct ntfsmount * ntmp, 1857 u_int32_t magic, 1858 caddr_t buf, 1859 size_t len) 1860 { 1861 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1862 int i; 1863 u_int16_t fixup; 1864 u_int16_t *fxp; 1865 u_int16_t *cfxp; 1866 1867 if (fhp->fh_magic != magic) { 1868 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1869 fhp->fh_magic, magic); 1870 return (EINVAL); 1871 } 1872 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1873 printf("ntfs_procfixups: " \ 1874 "bad fixups number: %d for %ld bytes block\n", 1875 fhp->fh_fnum, (long)len); /* XXX printf kludge */ 1876 return (EINVAL); 1877 } 1878 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1879 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1880 return (EINVAL); 1881 } 1882 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1883 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1884 fixup = *fxp++; 1885 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1886 if (*cfxp != fixup) { 1887 printf("ntfs_procfixups: fixup %d doesn't match\n", i); 1888 return (EINVAL); 1889 } 1890 *cfxp = *fxp; 1891 cfxp = (u_int16_t *) ((caddr_t) cfxp + ntmp->ntm_bps); 1892 } 1893 return (0); 1894 } 1895 1896 #if 0 1897 int 1898 ntfs_runtocn( 1899 cn_t * cn, 1900 struct ntfsmount * ntmp, 1901 u_int8_t * run, 1902 u_long len, 1903 cn_t vcn) 1904 { 1905 cn_t ccn = 0; 1906 cn_t ccl = 0; 1907 u_long off = 0; 1908 int error = 0; 1909 1910 #if NTFS_DEBUG 1911 int i; 1912 printf("ntfs_runtocn: run: %p, %ld bytes, vcn:%ld\n", 1913 run, len, (u_long) vcn); 1914 printf("ntfs_runtocn: run: "); 1915 for (i = 0; i < len; i++) 1916 printf("0x%02x ", run[i]); 1917 printf("\n"); 1918 #endif 1919 1920 if (NULL == run) { 1921 printf("ntfs_runtocn: run == NULL\n"); 1922 return (EINVAL); 1923 } 1924 do { 1925 if (run[off] == 0) { 1926 printf("ntfs_runtocn: vcn too big\n"); 1927 return (E2BIG); 1928 } 1929 vcn -= ccl; 1930 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1931 if (error) { 1932 printf("ntfs_runtocn: ntfs_parserun failed\n"); 1933 return (error); 1934 } 1935 } while (ccl <= vcn); 1936 *cn = ccn + vcn; 1937 return (0); 1938 } 1939 #endif 1940 1941 /* 1942 * this initializes toupper table & dependant variables to be ready for 1943 * later work 1944 */ 1945 void 1946 ntfs_toupper_init() 1947 { 1948 ntfs_toupper_tab = (wchar *) NULL; 1949 lockinit(&ntfs_toupper_lock, PVFS, "ntfs_toupper", 0, 0); 1950 ntfs_toupper_usecount = 0; 1951 } 1952 1953 void 1954 ntfs_toupper_destroy(void) 1955 { 1956 1957 lockdestroy(&ntfs_toupper_lock); 1958 } 1959 1960 /* 1961 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1962 * otherwise read the data from the filesystem we are currently mounting 1963 */ 1964 int 1965 ntfs_toupper_use(mp, ntmp) 1966 struct mount *mp; 1967 struct ntfsmount *ntmp; 1968 { 1969 int error = 0; 1970 struct vnode *vp; 1971 1972 /* get exclusive access */ 1973 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 1974 1975 /* only read the translation data from a file if it hasn't been 1976 * read already */ 1977 if (ntfs_toupper_tab) 1978 goto out; 1979 1980 /* 1981 * Read in Unicode lowercase -> uppercase translation file. 1982 * XXX for now, just the first 256 entries are used anyway, 1983 * so don't bother reading more 1984 */ 1985 ntfs_toupper_tab = malloc(65536 * sizeof(wchar), 1986 M_NTFSRDATA, M_WAITOK); 1987 1988 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, LK_EXCLUSIVE, &vp))) 1989 goto out; 1990 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1991 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1992 vput(vp); 1993 1994 out: 1995 ntfs_toupper_usecount++; 1996 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 1997 return (error); 1998 } 1999 2000 /* 2001 * lower the use count and if it reaches zero, free the memory 2002 * tied by toupper table 2003 */ 2004 void 2005 ntfs_toupper_unuse() 2006 { 2007 /* get exclusive access */ 2008 lockmgr(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL); 2009 2010 ntfs_toupper_usecount--; 2011 if (ntfs_toupper_usecount == 0) { 2012 free(ntfs_toupper_tab, M_NTFSRDATA); 2013 ntfs_toupper_tab = NULL; 2014 } 2015 #ifdef DIAGNOSTIC 2016 else if (ntfs_toupper_usecount < 0) { 2017 panic("ntfs_toupper_unuse(): use count negative: %d\n", 2018 ntfs_toupper_usecount); 2019 } 2020 #endif 2021 2022 /* release the lock */ 2023 lockmgr(&ntfs_toupper_lock, LK_RELEASE, NULL); 2024 } 2025 2026 int 2027 ntfs_u28_init( 2028 struct ntfsmount *ntmp, 2029 wchar *u2w, 2030 char *cs_local, 2031 char *cs_ntfs) 2032 { 2033 char ** u28; 2034 int i, j, h, l; 2035 2036 if (ntfs_iconv && cs_local) { 2037 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l); 2038 return (0); 2039 } 2040 2041 u28 = malloc(256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO); 2042 2043 for (i=0; i<256; i++) { 2044 h = (u2w[i] >> 8) & 0xFF; 2045 l = (u2w[i]) &0xFF; 2046 2047 if (u28[h] == NULL) { 2048 u28[h] = malloc(256 * sizeof(char), M_TEMP, M_WAITOK); 2049 for (j=0; j<256; j++) 2050 u28[h][j] = '_'; 2051 } 2052 2053 u28[h][l] = i & 0xFF; 2054 } 2055 2056 ntmp->ntm_u28 = u28; 2057 2058 return (0); 2059 } 2060 2061 int 2062 ntfs_u28_uninit(struct ntfsmount *ntmp) 2063 { 2064 char ** u28; 2065 int i; 2066 2067 if (ntmp->ntm_u28 == NULL) { 2068 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2069 ntfs_iconv->close(ntmp->ntm_ic_u2l); 2070 } 2071 return (0); 2072 } 2073 2074 u28 = ntmp->ntm_u28; 2075 2076 for (i=0; i<256; i++) 2077 if (u28[i] != NULL) 2078 free(u28[i], M_TEMP); 2079 2080 free(u28, M_TEMP); 2081 2082 return (0); 2083 } 2084 2085 int 2086 ntfs_82u_init( 2087 struct ntfsmount *ntmp, 2088 char *cs_local, 2089 char *cs_ntfs) 2090 { 2091 wchar * _82u; 2092 int i; 2093 2094 if (ntfs_iconv && cs_local) { 2095 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u); 2096 return (0); 2097 } 2098 2099 _82u = malloc(256 * sizeof(wchar), M_TEMP, M_WAITOK); 2100 2101 for (i=0; i<256; i++) 2102 _82u[i] = i; 2103 2104 ntmp->ntm_82u = _82u; 2105 2106 return (0); 2107 } 2108 2109 int 2110 ntfs_82u_uninit(struct ntfsmount *ntmp) 2111 { 2112 2113 if (ntmp->ntm_82u == NULL) { 2114 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2115 ntfs_iconv->close(ntmp->ntm_ic_l2u); 2116 } 2117 return (0); 2118 } 2119 2120 free(ntmp->ntm_82u, M_TEMP); 2121 return (0); 2122 } 2123 2124 /* 2125 * maps the Unicode char to local character 2126 */ 2127 char * 2128 ntfs_u28( 2129 char *outbuf, 2130 struct ntfsmount *ntmp, 2131 wchar wc) 2132 { 2133 char *p, *outp, inbuf[3]; 2134 size_t ilen, olen; 2135 2136 outp = outbuf; 2137 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2138 ilen = 2; 2139 olen = 4; 2140 2141 inbuf[0] = (char)(wc>>8); 2142 inbuf[1] = (char)wc; 2143 inbuf[2] = '\0'; 2144 p = inbuf; 2145 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, (const char **)&p, &ilen, 2146 &outp, &olen); 2147 if (olen == 4) 2148 *outp++ = '?'; 2149 *outp = '\0'; 2150 outp = outbuf; 2151 return (outp); 2152 } 2153 2154 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2155 outbuf[0] = (p == NULL) ? '_' : p[wc&0xFF] & 0xFF; 2156 outbuf[1] = '\0'; 2157 return (outp); 2158 } 2159 2160 wchar 2161 ntfs_82u( 2162 struct ntfsmount *ntmp, 2163 const char *c, 2164 int *len) 2165 { 2166 char *outp, outbuf[3]; 2167 wchar uc; 2168 size_t ilen, olen; 2169 2170 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2171 ilen = (size_t)*len; 2172 olen = 2; 2173 2174 outp = outbuf; 2175 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, &c, &ilen, &outp, &olen); 2176 *len -= (int)ilen; 2177 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)); 2178 2179 return (uc); 2180 } 2181 2182 if (ntmp->ntm_82u != NULL) 2183 return (ntmp->ntm_82u[*c&0xFF]); 2184 2185 return ('?'); 2186 } 2187
Cache object: 5f99039a8b758716e09d343b3b48d438
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