| 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, (const char **)&p, &ilen, |
| 2053 | &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, (const char **)&p, &ilen, |
| 2087 | &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 | } |