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: src/sys/ntfs/ntfs_subr.c,v 1.7.2.4 2001/10/12 22:08:49 semenu Exp $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/proc.h> 35 #include <sys/namei.h> 36 #include <sys/kernel.h> 37 #include <sys/vnode.h> 38 #include <sys/mount.h> 39 #include <sys/buf.h> 40 #include <sys/file.h> 41 #include <sys/malloc.h> 42 #include <sys/lock.h> 43 #include <sys/spinlock.h> 44 #include <sys/iconv.h> 45 46 #include <machine/inttypes.h> 47 48 #include <sys/buf2.h> 49 #include <sys/spinlock2.h> 50 51 #if defined(__NetBSD__) 52 #include <miscfs/specfs/specdev.h> 53 #endif 54 55 #include "ntfs.h" 56 #include "ntfsmount.h" 57 #include "ntfs_inode.h" 58 #include "ntfs_vfsops.h" 59 #include "ntfs_subr.h" 60 #include "ntfs_compr.h" 61 #include "ntfs_ihash.h" 62 63 #if defined(__DragonFly__) 64 MALLOC_DEFINE(M_NTFSNTVATTR, "NTFS vattr", "NTFS file attribute information"); 65 MALLOC_DEFINE(M_NTFSRDATA, "NTFS res data", "NTFS resident data"); 66 MALLOC_DEFINE(M_NTFSRUN, "NTFS vrun", "NTFS vrun storage"); 67 MALLOC_DEFINE(M_NTFSDECOMP, "NTFS decomp", "NTFS decompression temporary"); 68 #endif 69 70 static int ntfs_ntlookupattr (struct ntfsmount *, const char *, int, int *, char **); 71 static int ntfs_findvattr (struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t); 72 static int ntfs_uastricmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t); 73 static int ntfs_uastrcmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t); 74 75 /* table for mapping Unicode chars into uppercase; it's filled upon first 76 * ntfs mount, freed upon last ntfs umount */ 77 static wchar *ntfs_toupper_tab; 78 #define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(ch)]) 79 static struct lock ntfs_toupper_lock; 80 static signed int ntfs_toupper_usecount; 81 extern struct iconv_functions *ntfs_iconv; 82 83 /* support macro for ntfs_ntvattrget() */ 84 #define NTFS_AALPCMP(aalp,type,name,namelen) ( \ 85 (aalp->al_type == type) && (aalp->al_namelen == namelen) && \ 86 !NTFS_UASTRCMP(aalp->al_name,aalp->al_namelen,name,namelen) ) 87 88 /* 89 * 90 */ 91 int 92 ntfs_ntvattrrele(struct ntvattr *vap) 93 { 94 dprintf(("ntfs_ntvattrrele: ino: %"PRId64", type: 0x%x\n", 95 vap->va_ip->i_number, vap->va_type)); 96 97 ntfs_ntrele(vap->va_ip); 98 99 return (0); 100 } 101 102 /* 103 * find the attribute in the ntnode 104 */ 105 static int 106 ntfs_findvattr(struct ntfsmount *ntmp, struct ntnode *ip, 107 struct ntvattr **lvapp, struct ntvattr **vapp, u_int32_t type, 108 const char *name, size_t namelen, cn_t vcn) 109 { 110 int error; 111 struct ntvattr *vap; 112 113 if((ip->i_flag & IN_LOADED) == 0) { 114 dprintf(("ntfs_findvattr: node not loaded, ino: %"PRId64"\n", 115 ip->i_number)); 116 error = ntfs_loadntnode(ntmp,ip); 117 if (error) { 118 kprintf("ntfs_findvattr: FAILED TO LOAD INO: %"PRId64"\n", 119 ip->i_number); 120 return (error); 121 } 122 } 123 124 *lvapp = NULL; 125 *vapp = NULL; 126 for (vap = ip->i_valist.lh_first; vap; vap = vap->va_list.le_next) { 127 ddprintf(("ntfs_findvattr: type: 0x%x, vcn: %d - %d\n", \ 128 vap->va_type, (u_int32_t) vap->va_vcnstart, \ 129 (u_int32_t) vap->va_vcnend)); 130 if ((vap->va_type == type) && 131 (vap->va_vcnstart <= vcn) && (vap->va_vcnend >= vcn) && 132 (vap->va_namelen == namelen) && 133 (strncmp(name, vap->va_name, namelen) == 0)) { 134 *vapp = vap; 135 ntfs_ntref(vap->va_ip); 136 return (0); 137 } 138 if (vap->va_type == NTFS_A_ATTRLIST) 139 *lvapp = vap; 140 } 141 142 return (-1); 143 } 144 145 /* 146 * Search attribute specifed in ntnode (load ntnode if nessecary). 147 * If not found but ATTR_A_ATTRLIST present, read it in and search throught. 148 * VOP_VGET node needed, and lookup througth it's ntnode (load if nessesary). 149 * 150 * ntnode should be locked 151 */ 152 int 153 ntfs_ntvattrget(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t type, 154 const char *name, cn_t vcn, struct ntvattr **vapp) 155 { 156 struct ntvattr *lvap = NULL; 157 struct attr_attrlist *aalp; 158 struct attr_attrlist *nextaalp; 159 struct vnode *newvp; 160 struct ntnode *newip; 161 caddr_t alpool; 162 size_t namelen, len; 163 int error; 164 165 *vapp = NULL; 166 167 if (name) { 168 dprintf(("ntfs_ntvattrget: " \ 169 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \ 170 ip->i_number, type, name, (u_int32_t) vcn)); 171 namelen = strlen(name); 172 } else { 173 dprintf(("ntfs_ntvattrget: " \ 174 "ino: %"PRId64", type: 0x%x, vcn: %d\n", \ 175 ip->i_number, type, (u_int32_t) vcn)); 176 name = ""; 177 namelen = 0; 178 } 179 180 error = ntfs_findvattr(ntmp, ip, &lvap, vapp, type, name, namelen, vcn); 181 if (error >= 0) 182 return (error); 183 184 if (!lvap) { 185 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 186 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \ 187 ip->i_number, type, name, (u_int32_t) vcn)); 188 return (ENOENT); 189 } 190 /* Scan $ATTRIBUTE_LIST for requested attribute */ 191 len = lvap->va_datalen; 192 alpool = kmalloc(len, M_TEMP, M_WAITOK); 193 error = ntfs_readntvattr_plain(ntmp, ip, lvap, 0, len, alpool, &len, 194 NULL); 195 if (error) 196 goto out; 197 198 aalp = (struct attr_attrlist *) alpool; 199 nextaalp = NULL; 200 201 for(; len > 0; aalp = nextaalp) { 202 dprintf(("ntfs_ntvattrget: " \ 203 "attrlist: ino: %d, attr: 0x%x, vcn: %d\n", \ 204 aalp->al_inumber, aalp->al_type, \ 205 (u_int32_t) aalp->al_vcnstart)); 206 207 if (len > aalp->reclen) { 208 nextaalp = NTFS_NEXTREC(aalp, struct attr_attrlist *); 209 } else { 210 nextaalp = NULL; 211 } 212 len -= aalp->reclen; 213 214 if (!NTFS_AALPCMP(aalp, type, name, namelen) || 215 (nextaalp && (nextaalp->al_vcnstart <= vcn) && 216 NTFS_AALPCMP(nextaalp, type, name, namelen))) 217 continue; 218 219 dprintf(("ntfs_ntvattrget: attribute in ino: %d\n", 220 aalp->al_inumber)); 221 222 /* this is not a main record, so we can't use just plain 223 vget() */ 224 error = ntfs_vgetex(ntmp->ntm_mountp, aalp->al_inumber, 225 NTFS_A_DATA, NULL, LK_EXCLUSIVE, 226 VG_EXT, curthread, &newvp); 227 if (error) { 228 kprintf("ntfs_ntvattrget: CAN'T VGET INO: %d\n", 229 aalp->al_inumber); 230 goto out; 231 } 232 newip = VTONT(newvp); 233 /* XXX have to lock ntnode */ 234 error = ntfs_findvattr(ntmp, newip, &lvap, vapp, 235 type, name, namelen, vcn); 236 vput(newvp); 237 if (error == 0) 238 goto out; 239 kprintf("ntfs_ntvattrget: ATTRLIST ERROR.\n"); 240 break; 241 } 242 error = ENOENT; 243 244 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \ 245 "ino: %"PRId64", type: 0x%x, name: %.*s, vcn: %d\n", \ 246 ip->i_number, type, (int) namelen, name, (u_int32_t) vcn)); 247 out: 248 kfree(alpool, M_TEMP); 249 return (error); 250 } 251 252 /* 253 * Read ntnode from disk, make ntvattr list. 254 * 255 * ntnode should be locked 256 */ 257 int 258 ntfs_loadntnode(struct ntfsmount *ntmp, struct ntnode *ip) 259 { 260 struct filerec *mfrp; 261 daddr_t bn; 262 int error,off; 263 struct attr *ap; 264 struct ntvattr *nvap; 265 266 dprintf(("ntfs_loadntnode: loading ino: %"PRId64"\n",ip->i_number)); 267 268 mfrp = kmalloc(ntfs_bntob(ntmp->ntm_bpmftrec), M_TEMP, M_WAITOK); 269 270 if (ip->i_number < NTFS_SYSNODESNUM) { 271 struct buf *bp; 272 273 dprintf(("ntfs_loadntnode: read system node\n")); 274 275 bn = ntfs_cntobn(ntmp->ntm_mftcn) + 276 ntmp->ntm_bpmftrec * ip->i_number; 277 278 error = bread(ntmp->ntm_devvp, 279 ntfs_bntodoff(bn), ntfs_bntob(ntmp->ntm_bpmftrec), &bp); 280 if (error) { 281 kprintf("ntfs_loadntnode: BREAD FAILED\n"); 282 brelse(bp); 283 goto out; 284 } 285 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec)); 286 bqrelse(bp); 287 } else { 288 struct vnode *vp; 289 290 vp = ntmp->ntm_sysvn[NTFS_MFTINO]; 291 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 292 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec), 293 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL); 294 if (error) { 295 kprintf("ntfs_loadntnode: ntfs_readattr failed\n"); 296 goto out; 297 } 298 } 299 300 /* Check if magic and fixups are correct */ 301 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp, 302 ntfs_bntob(ntmp->ntm_bpmftrec)); 303 if (error) { 304 kprintf("ntfs_loadntnode: BAD MFT RECORD %"PRId64"\n", 305 ip->i_number); 306 goto out; 307 } 308 309 dprintf(("ntfs_loadntnode: load attrs for ino: %"PRId64"\n",ip->i_number)); 310 off = mfrp->fr_attroff; 311 ap = (struct attr *) ((caddr_t)mfrp + off); 312 313 LIST_INIT(&ip->i_valist); 314 315 while (ap->a_hdr.a_type != -1) { 316 error = ntfs_attrtontvattr(ntmp, &nvap, ap); 317 if (error) 318 break; 319 nvap->va_ip = ip; 320 321 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list); 322 323 off += ap->a_hdr.reclen; 324 ap = (struct attr *) ((caddr_t)mfrp + off); 325 } 326 if (error) { 327 kprintf("ntfs_loadntnode: failed to load attr ino: %"PRId64"\n", 328 ip->i_number); 329 goto out; 330 } 331 332 ip->i_mainrec = mfrp->fr_mainrec; 333 ip->i_nlink = mfrp->fr_nlink; 334 ip->i_frflag = mfrp->fr_flags; 335 336 ip->i_flag |= IN_LOADED; 337 338 out: 339 kfree(mfrp, M_TEMP); 340 return (error); 341 } 342 343 /* 344 * Routine locks ntnode and increase usecount, just opposite of 345 * ntfs_ntput(). 346 */ 347 int 348 ntfs_ntget(struct ntnode *ip) 349 { 350 dprintf(("ntfs_ntget: get ntnode %"PRId64": %p, usecount: %d\n", 351 ip->i_number, ip, ip->i_usecount)); 352 353 ip->i_usecount++; /* ZZZ */ 354 LOCKMGR(&ip->i_lock, LK_EXCLUSIVE); 355 356 return 0; 357 } 358 359 /* 360 * Routine search ntnode in hash, if found: lock, inc usecount and return. 361 * If not in hash allocate structure for ntnode, prefill it, lock, 362 * inc count and return. 363 * 364 * ntnode returned locked 365 */ 366 int 367 ntfs_ntlookup(struct ntfsmount *ntmp, ino_t ino, struct ntnode **ipp) 368 { 369 struct ntnode *ip; 370 371 dprintf(("ntfs_ntlookup: looking for ntnode %ju\n", (uintmax_t)ino)); 372 373 do { 374 if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) { 375 ntfs_ntget(ip); 376 dprintf(("ntfs_ntlookup: ntnode %ju: %p, usecount: %d\n", 377 (uintmax_t)ino, ip, ip->i_usecount)); 378 *ipp = ip; 379 return (0); 380 } 381 } while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL)); 382 383 ip = kmalloc(sizeof(struct ntnode), M_NTFSNTNODE, M_WAITOK | M_ZERO); 384 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip)); 385 386 /* Generic initialization */ 387 ip->i_devvp = ntmp->ntm_devvp; 388 ip->i_dev = ntmp->ntm_dev; 389 ip->i_number = ino; 390 ip->i_mp = ntmp; 391 392 LIST_INIT(&ip->i_fnlist); 393 vref(ip->i_devvp); 394 395 /* init lock and lock the newborn ntnode */ 396 lockinit(&ip->i_lock, "ntnode", 0, LK_EXCLUSIVE); 397 spin_init(&ip->i_interlock); 398 ntfs_ntget(ip); 399 400 ntfs_nthashins(ip); 401 402 LOCKMGR(&ntfs_hashlock, LK_RELEASE); 403 404 *ipp = ip; 405 406 dprintf(("ntfs_ntlookup: ntnode %ju: %p, usecount: %d\n", 407 (uintmax_t)ino, ip, ip->i_usecount)); 408 409 return (0); 410 } 411 412 /* 413 * Decrement usecount of ntnode and unlock it, if usecount reach zero, 414 * deallocate ntnode. 415 * 416 * ntnode should be locked on entry, and unlocked on return. 417 */ 418 void 419 ntfs_ntput(struct ntnode *ip) 420 { 421 struct ntvattr *vap; 422 423 dprintf(("ntfs_ntput: rele ntnode %"PRId64": %p, usecount: %d\n", 424 ip->i_number, ip, ip->i_usecount)); 425 426 spin_lock(&ip->i_interlock); 427 ip->i_usecount--; 428 429 #ifdef DIAGNOSTIC 430 if (ip->i_usecount < 0) { 431 spin_unlock(&ip->i_interlock); 432 panic("ntfs_ntput: ino: %"PRId64" usecount: %d ", 433 ip->i_number,ip->i_usecount); 434 } 435 #endif 436 437 if (ip->i_usecount > 0) { 438 spin_unlock(&ip->i_interlock); 439 LOCKMGR(&ip->i_lock, LK_RELEASE); 440 return; 441 } 442 443 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number)); 444 445 if (ip->i_fnlist.lh_first) { 446 spin_unlock(&ip->i_interlock); 447 panic("ntfs_ntput: ntnode has fnodes"); 448 } 449 450 /* 451 * XXX this is a bit iffy because we are making high level calls 452 * while holding a spinlock. 453 */ 454 ntfs_nthashrem(ip); 455 456 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) { 457 LIST_REMOVE(vap,va_list); 458 ntfs_freentvattr(vap); 459 } 460 spin_unlock(&ip->i_interlock); 461 vrele(ip->i_devvp); 462 kfree(ip, M_NTFSNTNODE); 463 } 464 465 /* 466 * increment usecount of ntnode 467 */ 468 void 469 ntfs_ntref(struct ntnode *ip) 470 { 471 ip->i_usecount++; 472 473 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n", 474 ip->i_number, ip->i_usecount)); 475 476 } 477 478 /* 479 * Decrement usecount of ntnode. 480 */ 481 void 482 ntfs_ntrele(struct ntnode *ip) 483 { 484 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n", 485 ip->i_number, ip, ip->i_usecount)); 486 487 spin_lock(&ip->i_interlock); 488 ip->i_usecount--; 489 490 if (ip->i_usecount < 0) { 491 spin_unlock(&ip->i_interlock); 492 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d ", 493 ip->i_number,ip->i_usecount); 494 } 495 spin_unlock(&ip->i_interlock); 496 } 497 498 /* 499 * Deallocate all memory allocated for ntvattr 500 */ 501 void 502 ntfs_freentvattr(struct ntvattr *vap) 503 { 504 if (vap->va_flag & NTFS_AF_INRUN) { 505 if (vap->va_vruncn) 506 kfree(vap->va_vruncn, M_NTFSRUN); 507 if (vap->va_vruncl) 508 kfree(vap->va_vruncl, M_NTFSRUN); 509 } else { 510 if (vap->va_datap) 511 kfree(vap->va_datap, M_NTFSRDATA); 512 } 513 kfree(vap, M_NTFSNTVATTR); 514 } 515 516 /* 517 * Convert disk image of attribute into ntvattr structure, 518 * runs are expanded also. 519 */ 520 int 521 ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp, 522 struct attr *rap) 523 { 524 int error, i; 525 struct ntvattr *vap; 526 527 error = 0; 528 *rvapp = NULL; 529 530 vap = kmalloc(sizeof(struct ntvattr), M_NTFSNTVATTR, 531 M_WAITOK | M_ZERO); 532 vap->va_ip = NULL; 533 vap->va_flag = rap->a_hdr.a_flag; 534 vap->va_type = rap->a_hdr.a_type; 535 vap->va_compression = rap->a_hdr.a_compression; 536 vap->va_index = rap->a_hdr.a_index; 537 538 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index)); 539 540 vap->va_namelen = rap->a_hdr.a_namelen; 541 if (rap->a_hdr.a_namelen) { 542 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff); 543 ddprintf((", name:[")); 544 for (i = 0; i < vap->va_namelen; i++) { 545 vap->va_name[i] = unp[i]; 546 ddprintf(("%c", vap->va_name[i])); 547 } 548 ddprintf(("]")); 549 } 550 if (vap->va_flag & NTFS_AF_INRUN) { 551 ddprintf((", nonres.")); 552 vap->va_datalen = rap->a_nr.a_datalen; 553 vap->va_allocated = rap->a_nr.a_allocated; 554 vap->va_vcnstart = rap->a_nr.a_vcnstart; 555 vap->va_vcnend = rap->a_nr.a_vcnend; 556 vap->va_compressalg = rap->a_nr.a_compressalg; 557 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl), 558 &(vap->va_vruncnt), 559 (caddr_t) rap + rap->a_nr.a_dataoff); 560 } else { 561 vap->va_compressalg = 0; 562 ddprintf((", res.")); 563 vap->va_datalen = rap->a_r.a_datalen; 564 vap->va_allocated = rap->a_r.a_datalen; 565 vap->va_vcnstart = 0; 566 vap->va_vcnend = ntfs_btocn(vap->va_allocated); 567 vap->va_datap = kmalloc(vap->va_datalen, M_NTFSRDATA, 568 M_WAITOK); 569 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff, 570 rap->a_r.a_datalen); 571 } 572 ddprintf((", len: %d", vap->va_datalen)); 573 574 if (error) 575 kfree(vap, M_NTFSNTVATTR); 576 else 577 *rvapp = vap; 578 579 ddprintf(("\n")); 580 581 return (error); 582 } 583 584 /* 585 * Expand run into more utilizable and more memory eating format. 586 */ 587 int 588 ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run) 589 { 590 u_int32_t off; 591 u_int32_t sz, i; 592 cn_t *cn; 593 cn_t *cl; 594 u_long cnt; 595 cn_t prev; 596 cn_t tmp; 597 598 off = 0; 599 cnt = 0; 600 i = 0; 601 while (run[off]) { 602 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1; 603 cnt++; 604 } 605 cn = kmalloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 606 cl = kmalloc(cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK); 607 608 off = 0; 609 cnt = 0; 610 prev = 0; 611 while (run[off]) { 612 613 sz = run[off++]; 614 cl[cnt] = 0; 615 616 for (i = 0; i < (sz & 0xF); i++) 617 cl[cnt] += (u_int32_t) run[off++] << (i << 3); 618 619 sz >>= 4; 620 if (run[off + sz - 1] & 0x80) { 621 tmp = ((u_int64_t) - 1) << (sz << 3); 622 for (i = 0; i < sz; i++) 623 tmp |= (u_int64_t) run[off++] << (i << 3); 624 } else { 625 tmp = 0; 626 for (i = 0; i < sz; i++) 627 tmp |= (u_int64_t) run[off++] << (i << 3); 628 } 629 if (tmp) 630 prev = cn[cnt] = prev + tmp; 631 else 632 cn[cnt] = tmp; 633 634 cnt++; 635 } 636 *rcnp = cn; 637 *rclp = cl; 638 *rcntp = cnt; 639 return (0); 640 } 641 642 /* 643 * Compare unicode and ascii string case insens. 644 */ 645 static int 646 ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 647 const char *astr, size_t astrlen) 648 { 649 int len; 650 size_t i, j, mbstrlen = astrlen; 651 int res; 652 wchar wc; 653 654 if (ntmp->ntm_ic_l2u) { 655 for (i = 0, j = 0; i < ustrlen && j < astrlen; i++, j++) { 656 if (j < astrlen -1) { 657 wc = (wchar)astr[j]<<8 | (astr[j+1]&0xFF); 658 len = 2; 659 } else { 660 wc = (wchar)astr[j]<<8 & 0xFF00; 661 len = 1; 662 } 663 res = ((int) NTFS_TOUPPER(ustr[i])) - 664 ((int)NTFS_TOUPPER(NTFS_82U(wc, &len))); 665 j += len - 1; 666 mbstrlen -= len - 1; 667 668 if (res) 669 return res; 670 } 671 } else { 672 /* 673 * We use NTFS_82U(NTFS_U28(c)) to get rid of unicode 674 * symbols not covered by translation table 675 */ 676 for (i = 0; i < ustrlen && i < astrlen; i++) { 677 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i]), &len))) - 678 ((int)NTFS_TOUPPER(NTFS_82U((wchar)astr[i], &len))); 679 if (res) 680 return res; 681 } 682 } 683 return (ustrlen - mbstrlen); 684 } 685 686 /* 687 * Compare unicode and ascii string case sens. 688 */ 689 static int 690 ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen, 691 const char *astr, size_t astrlen) 692 { 693 char u, l; 694 size_t i, j, mbstrlen = astrlen; 695 int res; 696 wchar wc; 697 698 for (i = 0, j = 0; (i < ustrlen) && (j < astrlen); i++, j++) { 699 res = 0; 700 wc = NTFS_U28(ustr[i]); 701 u = (char)(wc>>8); 702 l = (char)wc; 703 if (u != '\0' && j < astrlen -1) { 704 res = (int) (u - astr[j++]); 705 mbstrlen--; 706 } 707 res = (res<<8) + (int) (l - astr[j]); 708 if (res) 709 return res; 710 } 711 return (ustrlen - mbstrlen); 712 } 713 714 /* 715 * Search fnode in ntnode, if not found allocate and preinitialize. 716 * 717 * ntnode should be locked on entry. 718 */ 719 int 720 ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype, 721 char *attrname, struct fnode **fpp) 722 { 723 struct fnode *fp; 724 725 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n", 726 ip->i_number,attrtype, attrname?attrname:"")); 727 *fpp = NULL; 728 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){ 729 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n", 730 fp->f_attrtype, fp->f_attrname?fp->f_attrname:"")); 731 732 if ((attrtype == fp->f_attrtype) && 733 ((!attrname && !fp->f_attrname) || 734 (attrname && fp->f_attrname && 735 !strcmp(attrname,fp->f_attrname)))){ 736 dprintf(("ntfs_fget: found existed: %p\n",fp)); 737 *fpp = fp; 738 } 739 } 740 741 if (*fpp) 742 return (0); 743 744 fp = kmalloc(sizeof(struct fnode), M_NTFSFNODE, M_WAITOK | M_ZERO); 745 dprintf(("ntfs_fget: allocating fnode: %p\n",fp)); 746 747 fp->f_ip = ip; 748 if (attrname) { 749 fp->f_flag |= FN_AATTRNAME; 750 fp->f_attrname = kmalloc(strlen(attrname) + 1, M_TEMP, 751 M_WAITOK); 752 strcpy(fp->f_attrname, attrname); 753 } else 754 fp->f_attrname = NULL; 755 fp->f_attrtype = attrtype; 756 757 ntfs_ntref(ip); 758 759 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist); 760 761 *fpp = fp; 762 763 return (0); 764 } 765 766 /* 767 * Deallocate fnode, remove it from ntnode's fnode list. 768 * 769 * ntnode should be locked. 770 */ 771 void 772 ntfs_frele(struct fnode *fp) 773 { 774 struct ntnode *ip = FTONT(fp); 775 776 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip)); 777 778 dprintf(("ntfs_frele: deallocating fnode\n")); 779 LIST_REMOVE(fp,f_fnlist); 780 if (fp->f_flag & FN_AATTRNAME) 781 kfree(fp->f_attrname, M_TEMP); 782 if (fp->f_dirblbuf) 783 kfree(fp->f_dirblbuf, M_NTFSDIR); 784 kfree(fp, M_NTFSFNODE); 785 ntfs_ntrele(ip); 786 } 787 788 /* 789 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME], 790 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs. 791 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed. 792 */ 793 static int 794 ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen, 795 int *attrtype, char **attrname) 796 { 797 const char *sys; 798 size_t syslen, i; 799 struct ntvattrdef *adp; 800 801 if (namelen == 0) 802 return (0); 803 804 if (name[0] == '$') { 805 sys = name; 806 for (syslen = 0; syslen < namelen; syslen++) { 807 if(sys[syslen] == ':') { 808 name++; 809 namelen--; 810 break; 811 } 812 } 813 name += syslen; 814 namelen -= syslen; 815 816 adp = ntmp->ntm_ad; 817 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){ 818 if (syslen != adp->ad_namelen || 819 strncmp(sys, adp->ad_name, syslen) != 0) 820 continue; 821 822 *attrtype = adp->ad_type; 823 goto out; 824 } 825 return (ENOENT); 826 } else 827 *attrtype = NTFS_A_DATA; 828 829 out: 830 if (namelen) { 831 (*attrname) = kmalloc(namelen, M_TEMP, M_WAITOK); 832 memcpy((*attrname), name, namelen); 833 (*attrname)[namelen] = '\0'; 834 } 835 836 return (0); 837 } 838 839 /* 840 * Lookup specifed node for filename, matching cnp, 841 * return fnode filled. 842 */ 843 int 844 ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp, 845 struct componentname *cnp, struct vnode **vpp) 846 { 847 struct fnode *fp = VTOF(vp); 848 struct ntnode *ip = FTONT(fp); 849 struct ntvattr *vap; /* Root attribute */ 850 cn_t cn; /* VCN in current attribute */ 851 caddr_t rdbuf; /* Buffer to read directory's blocks */ 852 u_int32_t blsize; 853 u_int32_t rdsize; /* Length of data to read from current block */ 854 struct attr_indexentry *iep; 855 int error, res, anamelen, fnamelen; 856 const char *fname,*aname; 857 u_int32_t aoff; 858 int attrtype = NTFS_A_DATA; 859 char *attrname = NULL; 860 struct fnode *nfp; 861 struct vnode *nvp; 862 enum vtype f_type; 863 864 error = ntfs_ntget(ip); 865 if (error) 866 return (error); 867 868 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 869 if (error || (vap->va_flag & NTFS_AF_INRUN)) 870 return (ENOTDIR); 871 872 blsize = vap->va_a_iroot->ir_size; 873 rdsize = vap->va_datalen; 874 875 /* 876 * Divide file name into: foofilefoofilefoofile[:attrspec] 877 * Store like this: fname:fnamelen [aname:anamelen] 878 */ 879 fname = cnp->cn_nameptr; 880 aname = NULL; 881 anamelen = 0; 882 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++) 883 if(fname[fnamelen] == ':') { 884 aname = fname + fnamelen + 1; 885 anamelen = cnp->cn_namelen - fnamelen - 1; 886 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n", 887 fname, fnamelen, aname, anamelen)); 888 break; 889 } 890 891 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize)); 892 893 rdbuf = kmalloc(blsize, M_TEMP, M_WAITOK); 894 895 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30", 896 0, rdsize, rdbuf, NULL); 897 if (error) 898 goto fail; 899 900 aoff = sizeof(struct attr_indexroot); 901 902 do { 903 iep = (struct attr_indexentry *) (rdbuf + aoff); 904 905 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 906 aoff += iep->reclen, 907 iep = (struct attr_indexentry *) (rdbuf + aoff)) 908 { 909 ddprintf(("scan: %d, %d\n", 910 (u_int32_t) iep->ie_number, 911 (u_int32_t) iep->ie_fnametype)); 912 913 /* check the name - the case-insensitible check 914 * has to come first, to break from this for loop 915 * if needed, so we can dive correctly */ 916 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen, 917 fname, fnamelen); 918 if (res > 0) break; 919 if (res < 0) continue; 920 921 if (iep->ie_fnametype == 0 || 922 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)) 923 { 924 res = NTFS_UASTRCMP(iep->ie_fname, 925 iep->ie_fnamelen, fname, fnamelen); 926 if (res != 0) continue; 927 } 928 929 if (aname) { 930 error = ntfs_ntlookupattr(ntmp, 931 aname, anamelen, 932 &attrtype, &attrname); 933 if (error) 934 goto fail; 935 } 936 937 /* Check if we've found ourself */ 938 if ((iep->ie_number == ip->i_number) && 939 (attrtype == fp->f_attrtype) && 940 ((!attrname && !fp->f_attrname) || 941 (attrname && fp->f_attrname && 942 !strcmp(attrname, fp->f_attrname)))) 943 { 944 vref(vp); 945 *vpp = vp; 946 error = 0; 947 goto fail; 948 } 949 950 /* vget node, but don't load it */ 951 error = ntfs_vgetex(ntmp->ntm_mountp, 952 iep->ie_number, attrtype, attrname, 953 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN, 954 curthread, &nvp); 955 956 /* free the buffer returned by ntfs_ntlookupattr() */ 957 if (attrname) { 958 kfree(attrname, M_TEMP); 959 attrname = NULL; 960 } 961 962 if (error) 963 goto fail; 964 965 nfp = VTOF(nvp); 966 967 if (nfp->f_flag & FN_VALID) { 968 *vpp = nvp; 969 goto fail; 970 } 971 972 nfp->f_fflag = iep->ie_fflag; 973 nfp->f_pnumber = iep->ie_fpnumber; 974 nfp->f_times = iep->ie_ftimes; 975 976 if((nfp->f_fflag & NTFS_FFLAG_DIR) && 977 (nfp->f_attrtype == NTFS_A_DATA) && 978 (nfp->f_attrname == NULL)) 979 f_type = VDIR; 980 else 981 f_type = VREG; 982 983 nvp->v_type = f_type; 984 985 if ((nfp->f_attrtype == NTFS_A_DATA) && 986 (nfp->f_attrname == NULL)) 987 { 988 /* Opening default attribute */ 989 nfp->f_size = iep->ie_fsize; 990 nfp->f_allocated = iep->ie_fallocated; 991 nfp->f_flag |= FN_PRELOADED; 992 } else { 993 error = ntfs_filesize(ntmp, nfp, 994 &nfp->f_size, &nfp->f_allocated); 995 if (error) { 996 vput(nvp); 997 goto fail; 998 } 999 } 1000 nfp->f_flag &= ~FN_VALID; 1001 1002 /* 1003 * Normal files use the buffer cache 1004 */ 1005 if (nvp->v_type == VREG) 1006 vinitvmio(nvp, nfp->f_size, PAGE_SIZE, -1); 1007 *vpp = nvp; 1008 goto fail; 1009 } 1010 1011 /* Dive if possible */ 1012 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) { 1013 dprintf(("ntfs_ntlookupfile: diving\n")); 1014 1015 cn = *(cn_t *) (rdbuf + aoff + 1016 iep->reclen - sizeof(cn_t)); 1017 rdsize = blsize; 1018 1019 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30", 1020 ntfs_cntob(cn), rdsize, rdbuf, NULL); 1021 if (error) 1022 goto fail; 1023 1024 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1025 rdbuf, rdsize); 1026 if (error) 1027 goto fail; 1028 1029 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize + 1030 0x18); 1031 } else { 1032 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n")); 1033 error = ENOENT; 1034 break; 1035 } 1036 } while (1); 1037 1038 dprintf(("finish\n")); 1039 1040 fail: 1041 if (attrname) kfree(attrname, M_TEMP); 1042 ntfs_ntvattrrele(vap); 1043 ntfs_ntput(ip); 1044 kfree(rdbuf, M_TEMP); 1045 return (error); 1046 } 1047 1048 /* 1049 * Check if name type is permitted to show. 1050 */ 1051 int 1052 ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep) 1053 { 1054 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) 1055 return 1; 1056 1057 switch (iep->ie_fnametype) { 1058 case 2: 1059 ddprintf(("ntfs_isnamepermitted: skipped DOS name\n")); 1060 return 0; 1061 case 0: case 1: case 3: 1062 return 1; 1063 default: 1064 kprintf("ntfs_isnamepermitted: " \ 1065 "WARNING! Unknown file name type: %d\n", 1066 iep->ie_fnametype); 1067 break; 1068 } 1069 return 0; 1070 } 1071 1072 /* 1073 * Read ntfs dir like stream of attr_indexentry, not like btree of them. 1074 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them. 1075 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in 1076 * fnode, so we can skip toward record number num almost immediatly. 1077 * Anyway this is rather slow routine. The problem is that we don't know 1078 * how many records are there in $INDEX_ALLOCATION:$I30 block. 1079 */ 1080 int 1081 ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp, 1082 u_int32_t num, struct attr_indexentry **riepp) 1083 { 1084 struct ntnode *ip = FTONT(fp); 1085 struct ntvattr *vap = NULL; /* IndexRoot attribute */ 1086 struct ntvattr *bmvap = NULL; /* BitMap attribute */ 1087 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */ 1088 caddr_t rdbuf; /* Buffer to read directory's blocks */ 1089 u_char *bmp = NULL; /* Bitmap */ 1090 u_int32_t blsize; /* Index allocation size (2048) */ 1091 u_int32_t rdsize; /* Length of data to read */ 1092 u_int32_t attrnum; /* Current attribute type */ 1093 u_int32_t cpbl = 1; /* Clusters per directory block */ 1094 u_int32_t blnum; 1095 struct attr_indexentry *iep; 1096 int error = ENOENT; 1097 u_int32_t aoff, cnum; 1098 1099 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num)); 1100 error = ntfs_ntget(ip); 1101 if (error) 1102 return (error); 1103 1104 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap); 1105 if (error) 1106 return (ENOTDIR); 1107 1108 if (fp->f_dirblbuf == NULL) { 1109 fp->f_dirblsz = vap->va_a_iroot->ir_size; 1110 fp->f_dirblbuf = kmalloc(max(vap->va_datalen, fp->f_dirblsz), 1111 M_NTFSDIR, M_WAITOK); 1112 } 1113 1114 blsize = fp->f_dirblsz; 1115 rdbuf = fp->f_dirblbuf; 1116 1117 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize)); 1118 1119 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) { 1120 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 1121 0, &bmvap); 1122 if (error) { 1123 error = ENOTDIR; 1124 goto fail; 1125 } 1126 bmp = kmalloc(bmvap->va_datalen, M_TEMP, M_WAITOK); 1127 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0, 1128 bmvap->va_datalen, bmp, NULL); 1129 if (error) 1130 goto fail; 1131 1132 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30", 1133 0, &iavap); 1134 if (error) { 1135 error = ENOTDIR; 1136 goto fail; 1137 } 1138 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1); 1139 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n", 1140 iavap->va_datalen, cpbl)); 1141 } else { 1142 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n")); 1143 iavap = bmvap = NULL; 1144 bmp = NULL; 1145 } 1146 1147 /* Try use previous values */ 1148 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) { 1149 attrnum = fp->f_lastdattr; 1150 aoff = fp->f_lastdoff; 1151 blnum = fp->f_lastdblnum; 1152 cnum = fp->f_lastdnum; 1153 } else { 1154 attrnum = NTFS_A_INDXROOT; 1155 aoff = sizeof(struct attr_indexroot); 1156 blnum = 0; 1157 cnum = 0; 1158 } 1159 1160 do { 1161 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n", 1162 attrnum, blnum, cnum, num, aoff)); 1163 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize; 1164 error = ntfs_readattr(ntmp, ip, attrnum, "$I30", 1165 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL); 1166 if (error) 1167 goto fail; 1168 1169 if (attrnum == NTFS_A_INDX) { 1170 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC, 1171 rdbuf, rdsize); 1172 if (error) 1173 goto fail; 1174 } 1175 if (aoff == 0) 1176 aoff = (attrnum == NTFS_A_INDX) ? 1177 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) : 1178 sizeof(struct attr_indexroot); 1179 1180 iep = (struct attr_indexentry *) (rdbuf + aoff); 1181 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff); 1182 aoff += iep->reclen, 1183 iep = (struct attr_indexentry *) (rdbuf + aoff)) 1184 { 1185 if (!ntfs_isnamepermitted(ntmp, iep)) continue; 1186 1187 if (cnum >= num) { 1188 fp->f_lastdnum = cnum; 1189 fp->f_lastdoff = aoff; 1190 fp->f_lastdblnum = blnum; 1191 fp->f_lastdattr = attrnum; 1192 1193 *riepp = iep; 1194 1195 error = 0; 1196 goto fail; 1197 } 1198 cnum++; 1199 } 1200 1201 if (iavap) { 1202 if (attrnum == NTFS_A_INDXROOT) 1203 blnum = 0; 1204 else 1205 blnum++; 1206 1207 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) { 1208 if (bmp[blnum >> 3] & (1 << (blnum & 3))) 1209 break; 1210 blnum++; 1211 } 1212 1213 attrnum = NTFS_A_INDX; 1214 aoff = 0; 1215 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen) 1216 break; 1217 dprintf(("ntfs_ntreaddir: blnum: %d\n", blnum)); 1218 } 1219 } while (iavap); 1220 1221 *riepp = NULL; 1222 fp->f_lastdnum = 0; 1223 1224 fail: 1225 if (vap) 1226 ntfs_ntvattrrele(vap); 1227 if (bmvap) 1228 ntfs_ntvattrrele(bmvap); 1229 if (iavap) 1230 ntfs_ntvattrrele(iavap); 1231 if (bmp) 1232 kfree(bmp, M_TEMP); 1233 ntfs_ntput(ip); 1234 return (error); 1235 } 1236 1237 /* 1238 * Convert NTFS times that are in 100 ns units and begins from 1239 * 1601 Jan 1 into unix times. 1240 */ 1241 struct timespec 1242 ntfs_nttimetounix(u_int64_t nt) 1243 { 1244 struct timespec t; 1245 1246 /* WindowNT times are in 100 ns and from 1601 Jan 1 */ 1247 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100; 1248 t.tv_sec = nt / (1000 * 1000 * 10) - 1249 369LL * 365LL * 24LL * 60LL * 60LL - 1250 89LL * 1LL * 24LL * 60LL * 60LL; 1251 return (t); 1252 } 1253 1254 /* 1255 * Get file times from NTFS_A_NAME attribute. 1256 */ 1257 int 1258 ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm) 1259 { 1260 struct ntvattr *vap; 1261 int error; 1262 1263 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number)); 1264 1265 error = ntfs_ntget(ip); 1266 if (error) 1267 return (error); 1268 1269 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 1270 if (error) { 1271 ntfs_ntput(ip); 1272 return (error); 1273 } 1274 *tm = vap->va_a_name->n_times; 1275 ntfs_ntvattrrele(vap); 1276 ntfs_ntput(ip); 1277 1278 return (0); 1279 } 1280 1281 /* 1282 * Get file sizes from corresponding attribute. 1283 * 1284 * ntnode under fnode should be locked. 1285 */ 1286 int 1287 ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size, 1288 u_int64_t *bytes) 1289 { 1290 struct ntvattr *vap; 1291 struct ntnode *ip = FTONT(fp); 1292 u_int64_t sz, bn; 1293 int error; 1294 1295 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number)); 1296 1297 error = ntfs_ntvattrget(ntmp, ip, 1298 fp->f_attrtype, fp->f_attrname, 0, &vap); 1299 if (error) 1300 return (error); 1301 1302 bn = vap->va_allocated; 1303 sz = vap->va_datalen; 1304 1305 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n", 1306 (u_int32_t) sz, (u_int32_t) bn)); 1307 1308 if (size) 1309 *size = sz; 1310 if (bytes) 1311 *bytes = bn; 1312 1313 ntfs_ntvattrrele(vap); 1314 1315 return (0); 1316 } 1317 1318 /* 1319 * This is one of write routine. 1320 */ 1321 int 1322 ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1323 u_int32_t attrnum, char *attrname, off_t roff, 1324 size_t rsize, void *rdata, size_t *initp, 1325 struct uio *uio) 1326 { 1327 size_t init; 1328 int error = 0; 1329 off_t off = roff, left = rsize, towrite; 1330 caddr_t data = rdata; 1331 struct ntvattr *vap; 1332 *initp = 0; 1333 1334 while (left) { 1335 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1336 ntfs_btocn(off), &vap); 1337 if (error) 1338 return (error); 1339 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1340 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n", 1341 (u_int32_t) off, (u_int32_t) towrite, 1342 (u_int32_t) vap->va_vcnstart, 1343 (u_int32_t) vap->va_vcnend)); 1344 error = ntfs_writentvattr_plain(ntmp, ip, vap, 1345 off - ntfs_cntob(vap->va_vcnstart), 1346 towrite, data, &init, uio); 1347 if (error) { 1348 kprintf("ntfs_writeattr_plain: " \ 1349 "ntfs_writentvattr_plain failed: o: %d, s: %d\n", 1350 (u_int32_t) off, (u_int32_t) towrite); 1351 kprintf("ntfs_writeattr_plain: attrib: %d - %d\n", 1352 (u_int32_t) vap->va_vcnstart, 1353 (u_int32_t) vap->va_vcnend); 1354 ntfs_ntvattrrele(vap); 1355 break; 1356 } 1357 ntfs_ntvattrrele(vap); 1358 left -= towrite; 1359 off += towrite; 1360 data = data + towrite; 1361 *initp += init; 1362 } 1363 1364 return (error); 1365 } 1366 1367 /* 1368 * This is one of write routine. 1369 * 1370 * ntnode should be locked. 1371 */ 1372 int 1373 ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1374 struct ntvattr *vap, off_t roff, size_t rsize, 1375 void *rdata, size_t *initp, struct uio *uio) 1376 { 1377 int error = 0; 1378 int off; 1379 int cnt; 1380 cn_t ccn, ccl, cn, left, cl; 1381 caddr_t data = rdata; 1382 struct buf *bp; 1383 size_t tocopy; 1384 1385 *initp = 0; 1386 1387 if ((vap->va_flag & NTFS_AF_INRUN) == 0) { 1388 kprintf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n"); 1389 return ENOTTY; 1390 } 1391 1392 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n", 1393 vap->va_vruncnt)); 1394 1395 off = roff; 1396 left = rsize; 1397 ccl = 0; 1398 ccn = 0; 1399 cnt = 0; 1400 for (; left && (cnt < vap->va_vruncnt); cnt++) { 1401 ccn = vap->va_vruncn[cnt]; 1402 ccl = vap->va_vruncl[cnt]; 1403 1404 ddprintf(("ntfs_writentvattr_plain: " \ 1405 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1406 (u_int32_t) left, (u_int32_t) ccn, \ 1407 (u_int32_t) ccl, (u_int32_t) off)); 1408 1409 if (ntfs_cntob(ccl) < off) { 1410 off -= ntfs_cntob(ccl); 1411 cnt++; 1412 continue; 1413 } 1414 if (!ccn && ip->i_number != NTFS_BOOTINO) 1415 continue; /* XXX */ 1416 1417 ccl -= ntfs_btocn(off); 1418 cn = ccn + ntfs_btocn(off); 1419 off = ntfs_btocnoff(off); 1420 1421 while (left && ccl) { 1422 #if defined(__DragonFly__) 1423 tocopy = min(left, 1424 min(ntfs_cntob(ccl) - off, MAXBSIZE - off)); 1425 #else 1426 /* under NetBSD, bread() can read 1427 * maximum one block worth of data */ 1428 tocopy = min(left, ntmp->ntm_bps - off); 1429 #endif 1430 cl = ntfs_btocl(tocopy + off); 1431 ddprintf(("ntfs_writentvattr_plain: write: " \ 1432 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n", 1433 (u_int32_t) cn, (u_int32_t) cl, 1434 (u_int32_t) off, (u_int32_t) tocopy, 1435 (u_int32_t) left)); 1436 if (off == 0 && tocopy == ntfs_cntob(cl) && 1437 uio->uio_segflg != UIO_NOCOPY) { 1438 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn), 1439 ntfs_cntob(cl), 0, 0); 1440 clrbuf(bp); 1441 } else { 1442 error = bread(ntmp->ntm_devvp, 1443 ntfs_cntodoff(cn), 1444 ntfs_cntob(cl), &bp); 1445 if (error) { 1446 brelse(bp); 1447 return (error); 1448 } 1449 } 1450 if (uio) 1451 uiomovebp(bp, bp->b_data + off, tocopy, uio); 1452 else 1453 memcpy(bp->b_data + off, data, tocopy); 1454 bawrite(bp); 1455 data = data + tocopy; 1456 *initp += tocopy; 1457 off = 0; 1458 left -= tocopy; 1459 cn += cl; 1460 ccl -= cl; 1461 } 1462 } 1463 1464 if (left) { 1465 kprintf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n"); 1466 error = EINVAL; 1467 } 1468 1469 return (error); 1470 } 1471 1472 /* 1473 * This is one of read routines. 1474 * 1475 * ntnode should be locked. 1476 */ 1477 int 1478 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1479 struct ntvattr *vap, off_t roff, size_t rsize, 1480 void *rdata, size_t *initp, struct uio *uio) 1481 { 1482 int error = 0; 1483 int off; 1484 1485 *initp = 0; 1486 if (vap->va_flag & NTFS_AF_INRUN) { 1487 int cnt; 1488 cn_t ccn, ccl, cn, left, cl; 1489 caddr_t data = rdata; 1490 struct buf *bp; 1491 size_t tocopy; 1492 1493 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n", 1494 vap->va_vruncnt)); 1495 1496 off = roff; 1497 left = rsize; 1498 ccl = 0; 1499 ccn = 0; 1500 cnt = 0; 1501 while (left && (cnt < vap->va_vruncnt)) { 1502 ccn = vap->va_vruncn[cnt]; 1503 ccl = vap->va_vruncl[cnt]; 1504 1505 ddprintf(("ntfs_readntvattr_plain: " \ 1506 "left %d, cn: 0x%x, cl: %d, off: %d\n", \ 1507 (u_int32_t) left, (u_int32_t) ccn, \ 1508 (u_int32_t) ccl, (u_int32_t) off)); 1509 1510 if (ntfs_cntob(ccl) < off) { 1511 off -= ntfs_cntob(ccl); 1512 cnt++; 1513 continue; 1514 } 1515 if (ccn || ip->i_number == NTFS_BOOTINO) { 1516 ccl -= ntfs_btocn(off); 1517 cn = ccn + ntfs_btocn(off); 1518 off = ntfs_btocnoff(off); 1519 1520 while (left && ccl) { 1521 #if defined(__DragonFly__) 1522 tocopy = min(left, 1523 min(ntfs_cntob(ccl) - off, 1524 MAXBSIZE - off)); 1525 #else 1526 /* under NetBSD, bread() can read 1527 * maximum one block worth of data */ 1528 tocopy = min(left, 1529 ntmp->ntm_bps - off); 1530 #endif 1531 cl = ntfs_btocl(tocopy + off); 1532 ddprintf(("ntfs_readntvattr_plain: " \ 1533 "read: cn: 0x%x cl: %d, " \ 1534 "off: %d len: %d, left: %d\n", 1535 (u_int32_t) cn, 1536 (u_int32_t) cl, 1537 (u_int32_t) off, 1538 (u_int32_t) tocopy, 1539 (u_int32_t) left)); 1540 error = bread(ntmp->ntm_devvp, 1541 ntfs_cntodoff(cn), 1542 ntfs_cntob(cl), 1543 &bp); 1544 if (error) { 1545 brelse(bp); 1546 return (error); 1547 } 1548 if (uio) { 1549 uiomovebp(bp, bp->b_data + off, 1550 tocopy, uio); 1551 } else { 1552 memcpy(data, bp->b_data + off, 1553 tocopy); 1554 } 1555 brelse(bp); 1556 data = data + tocopy; 1557 *initp += tocopy; 1558 off = 0; 1559 left -= tocopy; 1560 cn += cl; 1561 ccl -= cl; 1562 } 1563 } else { 1564 tocopy = min(left, ntfs_cntob(ccl) - off); 1565 ddprintf(("ntfs_readntvattr_plain: " 1566 "hole: ccn: 0x%x ccl: %d, off: %d, " \ 1567 " len: %d, left: %d\n", 1568 (u_int32_t) ccn, (u_int32_t) ccl, 1569 (u_int32_t) off, (u_int32_t) tocopy, 1570 (u_int32_t) left)); 1571 left -= tocopy; 1572 off = 0; 1573 if (uio) { 1574 size_t remains = tocopy; 1575 for(; remains; remains++) 1576 uiomove("", 1, uio); 1577 } else 1578 bzero(data, tocopy); 1579 data = data + tocopy; 1580 } 1581 cnt++; 1582 } 1583 if (left) { 1584 kprintf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n"); 1585 error = E2BIG; 1586 } 1587 } else { 1588 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n")); 1589 if (uio) 1590 uiomove(vap->va_datap + roff, rsize, uio); 1591 else 1592 memcpy(rdata, vap->va_datap + roff, rsize); 1593 *initp += rsize; 1594 } 1595 1596 return (error); 1597 } 1598 1599 /* 1600 * This is one of read routines. 1601 */ 1602 int 1603 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip, 1604 u_int32_t attrnum, char *attrname, off_t roff, 1605 size_t rsize, void *rdata, size_t * initp, 1606 struct uio *uio) 1607 { 1608 size_t init; 1609 int error = 0; 1610 off_t off = roff, left = rsize, toread; 1611 caddr_t data = rdata; 1612 struct ntvattr *vap; 1613 *initp = 0; 1614 1615 while (left) { 1616 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 1617 ntfs_btocn(off), &vap); 1618 if (error) 1619 return (error); 1620 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off); 1621 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n", 1622 (u_int32_t) off, (u_int32_t) toread, 1623 (u_int32_t) vap->va_vcnstart, 1624 (u_int32_t) vap->va_vcnend)); 1625 error = ntfs_readntvattr_plain(ntmp, ip, vap, 1626 off - ntfs_cntob(vap->va_vcnstart), 1627 toread, data, &init, uio); 1628 if (error) { 1629 kprintf("ntfs_readattr_plain: " \ 1630 "ntfs_readntvattr_plain failed: o: %d, s: %d\n", 1631 (u_int32_t) off, (u_int32_t) toread); 1632 kprintf("ntfs_readattr_plain: attrib: %d - %d\n", 1633 (u_int32_t) vap->va_vcnstart, 1634 (u_int32_t) vap->va_vcnend); 1635 ntfs_ntvattrrele(vap); 1636 break; 1637 } 1638 ntfs_ntvattrrele(vap); 1639 left -= toread; 1640 off += toread; 1641 data = data + toread; 1642 *initp += init; 1643 } 1644 1645 return (error); 1646 } 1647 1648 /* 1649 * This is one of read routines. 1650 */ 1651 int 1652 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum, 1653 char *attrname, off_t roff, size_t rsize, void *rdata, 1654 struct uio *uio) 1655 { 1656 int error = 0; 1657 struct ntvattr *vap; 1658 size_t init; 1659 1660 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n", 1661 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize)); 1662 1663 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap); 1664 if (error) 1665 return (error); 1666 1667 if ((roff > vap->va_datalen) || 1668 (roff + rsize > vap->va_datalen)) { 1669 ddprintf(("ntfs_readattr: offset too big\n")); 1670 ntfs_ntvattrrele(vap); 1671 return (E2BIG); 1672 } 1673 if (vap->va_compression && vap->va_compressalg) { 1674 u_int8_t *cup; 1675 u_int8_t *uup; 1676 off_t off, left = rsize, tocopy; 1677 caddr_t data = rdata; 1678 cn_t cn; 1679 1680 ddprintf(("ntfs_ntreadattr: compression: %d\n", 1681 vap->va_compressalg)); 1682 1683 cup = kmalloc(ntfs_cntob(NTFS_COMPUNIT_CL), M_NTFSDECOMP, 1684 M_WAITOK); 1685 uup = kmalloc(ntfs_cntob(NTFS_COMPUNIT_CL), M_NTFSDECOMP, 1686 M_WAITOK); 1687 1688 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1)); 1689 off = roff - ntfs_cntob(cn); 1690 1691 while (left) { 1692 error = ntfs_readattr_plain(ntmp, ip, attrnum, 1693 attrname, ntfs_cntob(cn), 1694 ntfs_cntob(NTFS_COMPUNIT_CL), 1695 cup, &init, NULL); 1696 if (error) 1697 break; 1698 1699 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off); 1700 1701 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) { 1702 if (uio) 1703 uiomove(cup + off, tocopy, uio); 1704 else 1705 memcpy(data, cup + off, tocopy); 1706 } else if (init == 0) { 1707 if (uio) { 1708 size_t remains = tocopy; 1709 for(; remains; remains--) 1710 uiomove("", 1, uio); 1711 } 1712 else 1713 bzero(data, tocopy); 1714 } else { 1715 error = ntfs_uncompunit(ntmp, uup, cup); 1716 if (error) 1717 break; 1718 if (uio) 1719 uiomove(uup + off, tocopy, uio); 1720 else 1721 memcpy(data, uup + off, tocopy); 1722 } 1723 1724 left -= tocopy; 1725 data = data + tocopy; 1726 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL); 1727 cn += NTFS_COMPUNIT_CL; 1728 } 1729 1730 kfree(uup, M_NTFSDECOMP); 1731 kfree(cup, M_NTFSDECOMP); 1732 } else 1733 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname, 1734 roff, rsize, rdata, &init, uio); 1735 ntfs_ntvattrrele(vap); 1736 return (error); 1737 } 1738 1739 #if 0 /* UNUSED */ 1740 int 1741 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off) 1742 { 1743 u_int8_t sz; 1744 int i; 1745 1746 if (NULL == run) { 1747 kprintf("ntfs_parsetun: run == NULL\n"); 1748 return (EINVAL); 1749 } 1750 sz = run[(*off)++]; 1751 if (0 == sz) { 1752 kprintf("ntfs_parserun: trying to go out of run\n"); 1753 return (E2BIG); 1754 } 1755 *cl = 0; 1756 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1757 kprintf("ntfs_parserun: " \ 1758 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1759 sz, len, *off); 1760 return (EINVAL); 1761 } 1762 for (i = 0; i < (sz & 0xF); i++) 1763 *cl += (u_int32_t) run[(*off)++] << (i << 3); 1764 1765 sz >>= 4; 1766 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) { 1767 kprintf("ntfs_parserun: " \ 1768 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n", 1769 sz, len, *off); 1770 return (EINVAL); 1771 } 1772 for (i = 0; i < (sz & 0xF); i++) 1773 *cn += (u_int32_t) run[(*off)++] << (i << 3); 1774 1775 return (0); 1776 } 1777 #endif 1778 1779 /* 1780 * Process fixup routine on given buffer. 1781 */ 1782 int 1783 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf, 1784 size_t len) 1785 { 1786 struct fixuphdr *fhp = (struct fixuphdr *) buf; 1787 int i; 1788 u_int16_t fixup; 1789 u_int16_t *fxp; 1790 u_int16_t *cfxp; 1791 1792 if (fhp->fh_magic != magic) { 1793 kprintf("ntfs_procfixups: magic doesn't match: %08x != %08x\n", 1794 fhp->fh_magic, magic); 1795 return (EINVAL); 1796 } 1797 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) { 1798 kprintf("ntfs_procfixups: " \ 1799 "bad fixups number: %d for %ld bytes block\n", 1800 fhp->fh_fnum, (long)len); /* XXX kprintf kludge */ 1801 return (EINVAL); 1802 } 1803 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) { 1804 kprintf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff); 1805 return (EINVAL); 1806 } 1807 fxp = (u_int16_t *) (buf + fhp->fh_foff); 1808 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2); 1809 fixup = *fxp++; 1810 for (i = 1; i < fhp->fh_fnum; i++, fxp++) { 1811 if (*cfxp != fixup) { 1812 kprintf("ntfs_procfixups: fixup %d doesn't match\n", i); 1813 return (EINVAL); 1814 } 1815 *cfxp = *fxp; 1816 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps); 1817 } 1818 return (0); 1819 } 1820 1821 #if 0 /* UNUSED */ 1822 int 1823 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len, 1824 cn_t vcn) 1825 { 1826 cn_t ccn = 0; 1827 cn_t ccl = 0; 1828 u_long off = 0; 1829 int error = 0; 1830 1831 #if NTFS_DEBUG 1832 int i; 1833 kprintf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n", 1834 run, len, (u_long) vcn); 1835 kprintf("ntfs_runtocn: run: "); 1836 for (i = 0; i < len; i++) 1837 kprintf("0x%02x ", run[i]); 1838 kprintf("\n"); 1839 #endif 1840 1841 if (NULL == run) { 1842 kprintf("ntfs_runtocn: run == NULL\n"); 1843 return (EINVAL); 1844 } 1845 do { 1846 if (run[off] == 0) { 1847 kprintf("ntfs_runtocn: vcn too big\n"); 1848 return (E2BIG); 1849 } 1850 vcn -= ccl; 1851 error = ntfs_parserun(&ccn, &ccl, run, len, &off); 1852 if (error) { 1853 kprintf("ntfs_runtocn: ntfs_parserun failed\n"); 1854 return (error); 1855 } 1856 } while (ccl <= vcn); 1857 *cn = ccn + vcn; 1858 return (0); 1859 } 1860 #endif 1861 1862 /* 1863 * this initializes toupper table & dependant variables to be ready for 1864 * later work 1865 */ 1866 void 1867 ntfs_toupper_init(void) 1868 { 1869 ntfs_toupper_tab = NULL; 1870 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0); 1871 ntfs_toupper_usecount = 0; 1872 } 1873 1874 /* 1875 * if the ntfs_toupper_tab[] is filled already, just raise use count; 1876 * otherwise read the data from the filesystem we are currently mounting 1877 */ 1878 int 1879 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp) 1880 { 1881 int error = 0; 1882 struct vnode *vp; 1883 1884 /* get exclusive access */ 1885 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE); 1886 1887 /* only read the translation data from a file if it hasn't been 1888 * read already */ 1889 if (ntfs_toupper_tab) 1890 goto out; 1891 1892 /* 1893 * Read in Unicode lowercase -> uppercase translation file. 1894 * XXX for now, just the first 256 entries are used anyway, 1895 * so don't bother reading more 1896 */ 1897 ntfs_toupper_tab = kmalloc(65536 * sizeof(wchar), M_NTFSRDATA, 1898 M_WAITOK); 1899 1900 if ((error = VFS_VGET(mp, NULL, NTFS_UPCASEINO, &vp))) 1901 goto out; 1902 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 1903 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL); 1904 vput(vp); 1905 1906 out: 1907 ntfs_toupper_usecount++; 1908 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE); 1909 return (error); 1910 } 1911 1912 /* 1913 * lower the use count and if it reaches zero, free the memory 1914 * tied by toupper table 1915 */ 1916 void 1917 ntfs_toupper_unuse(void) 1918 { 1919 /* get exclusive access */ 1920 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE); 1921 1922 ntfs_toupper_usecount--; 1923 if (ntfs_toupper_usecount == 0) { 1924 kfree(ntfs_toupper_tab, M_NTFSRDATA); 1925 ntfs_toupper_tab = NULL; 1926 } 1927 #ifdef DIAGNOSTIC 1928 else if (ntfs_toupper_usecount < 0) { 1929 panic("ntfs_toupper_unuse(): use count negative: %d", 1930 ntfs_toupper_usecount); 1931 } 1932 #endif 1933 1934 /* release the lock */ 1935 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE); 1936 } 1937 1938 int 1939 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w, char *cs_local, 1940 char *cs_ntfs) 1941 { 1942 char ** u28; 1943 int i, j, h, l; 1944 1945 if (ntfs_iconv && cs_local) { 1946 ntfs_iconv->open(cs_local, cs_ntfs, &ntmp->ntm_ic_u2l); 1947 return (0); 1948 } 1949 1950 u28 = kmalloc(256 * sizeof(char *), M_TEMP, M_WAITOK | M_ZERO); 1951 1952 for (i=0; i<256; i++) { 1953 h = (u2w[i] >> 8) & 0xFF; 1954 l = (u2w[i]) &0xFF; 1955 1956 if (u28[h] == NULL) { 1957 u28[h] = kmalloc(256 * sizeof(char), M_TEMP, M_WAITOK); 1958 for (j=0; j<256; j++) 1959 u28[h][j] = '_'; 1960 } 1961 1962 u28[h][l] = i & 0xFF; 1963 } 1964 1965 ntmp->ntm_u28 = u28; 1966 1967 return (0); 1968 } 1969 1970 int 1971 ntfs_u28_uninit(struct ntfsmount *ntmp) 1972 { 1973 char ** u28; 1974 int i; 1975 1976 if (ntmp->ntm_u28 == NULL) { 1977 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 1978 ntfs_iconv->close(ntmp->ntm_ic_u2l); 1979 } 1980 return (0); 1981 } 1982 1983 if (ntmp->ntm_u28 == NULL) 1984 return (0); 1985 1986 u28 = ntmp->ntm_u28; 1987 1988 for (i=0; i<256; i++) 1989 if (u28[i] != NULL) 1990 kfree(u28[i], M_TEMP); 1991 1992 kfree(u28, M_TEMP); 1993 1994 return (0); 1995 } 1996 1997 int 1998 ntfs_82u_init(struct ntfsmount *ntmp, char *cs_local, char *cs_ntfs) 1999 2000 { 2001 wchar * _82u; 2002 int i; 2003 2004 if (ntfs_iconv && cs_local) { 2005 ntfs_iconv->open(cs_ntfs, cs_local, &ntmp->ntm_ic_l2u); 2006 return (0); 2007 } 2008 2009 _82u = kmalloc(256 * sizeof(wchar), M_TEMP, M_WAITOK); 2010 2011 for (i=0; i<256; i++) 2012 _82u[i] = i; 2013 2014 ntmp->ntm_82u = _82u; 2015 2016 return (0); 2017 } 2018 2019 int 2020 ntfs_82u_uninit(struct ntfsmount *ntmp) 2021 { 2022 if (ntmp->ntm_82u == NULL) { 2023 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2024 ntfs_iconv->close(ntmp->ntm_ic_l2u); 2025 } 2026 return (0); 2027 } 2028 2029 kfree(ntmp->ntm_82u, M_TEMP); 2030 return (0); 2031 } 2032 2033 /* 2034 * maps the Unicode char to 8bit equivalent 2035 * XXX currently only gets lower 8bit from the Unicode char 2036 * and substitutes a '_' for it if the result would be '\0'; 2037 * something better has to be definitely though out 2038 */ 2039 wchar 2040 ntfs_u28(struct ntfsmount *ntmp, wchar wc) 2041 { 2042 char *p, *outp, inbuf[3], outbuf[3]; 2043 size_t ilen, olen; 2044 2045 if (ntfs_iconv && ntmp->ntm_ic_u2l) { 2046 ilen = olen = 2; 2047 inbuf[0] = (char)(wc>>8); 2048 inbuf[1] = (char)wc; 2049 inbuf[2] = '\0'; 2050 p = inbuf; 2051 outp = outbuf; 2052 ntfs_iconv->convchr(ntmp->ntm_ic_u2l, 2053 (const char **)(void *)&p, &ilen, &outp, &olen); 2054 if (olen == 1) { 2055 return ((wchar)(outbuf[0]&0xFF)); 2056 } else if (olen == 0) { 2057 return ((wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF))); 2058 } 2059 return ('?'); 2060 } 2061 2062 p = ntmp->ntm_u28[(wc>>8)&0xFF]; 2063 if (p == NULL) 2064 return ('_'); 2065 return (p[wc&0xFF]); 2066 } 2067 2068 wchar 2069 ntfs_82u(struct ntfsmount *ntmp, 2070 wchar wc, 2071 int *len) 2072 { 2073 char *p, *outp, inbuf[3], outbuf[3]; 2074 wchar uc; 2075 size_t ilen, olen; 2076 2077 if (ntfs_iconv && ntmp->ntm_ic_l2u) { 2078 ilen = (size_t)*len; 2079 olen = 2; 2080 2081 inbuf[0] = (char)(wc>>8); 2082 inbuf[1] = (char)wc; 2083 inbuf[2] = '\0'; 2084 p = inbuf; 2085 outp = outbuf; 2086 ntfs_iconv->convchr(ntmp->ntm_ic_l2u, 2087 (const char **)(void *)&p, &ilen, &outp, &olen); 2088 *len -= (int)ilen; 2089 uc = (wchar)((outbuf[0]<<8) | (outbuf[1]&0xFF)); 2090 2091 return (uc); 2092 } 2093 2094 if (ntmp->ntm_82u != NULL) 2095 return (ntmp->ntm_82u[wc&0xFF]); 2096 2097 return ('?'); 2098 } 2099