1 /* $OpenBSD: ntfs_vnops.c,v 1.13 2008/05/13 02:24:08 brad Exp $ */ 2 /* $NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * John Heidemann of the UCLA Ficus project. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp 36 * 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/time.h> 43 #include <sys/stat.h> 44 #include <sys/vnode.h> 45 #include <sys/mount.h> 46 #include <sys/namei.h> 47 #include <sys/malloc.h> 48 #include <sys/buf.h> 49 #include <sys/dirent.h> 50 51 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 52 #include <vm/vm.h> 53 #endif 54 55 #if defined(__FreeBSD__) 56 #include <vm/vnode_pager.h> 57 #endif 58 59 #include <sys/sysctl.h> 60 61 62 /*#define NTFS_DEBUG 1*/ 63 #if defined(__FreeBSD__) || defined(__NetBSD__) 64 #include <fs/ntfs/ntfs.h> 65 #include <fs/ntfs/ntfs_inode.h> 66 #include <fs/ntfs/ntfs_subr.h> 67 #include <miscfs/genfs/genfs.h> 68 #else 69 #include <ntfs/ntfs.h> 70 #include <ntfs/ntfs_inode.h> 71 #include <ntfs/ntfs_subr.h> 72 #endif 73 74 #include <miscfs/specfs/specdev.h> 75 76 #include <sys/unistd.h> /* for pathconf(2) constants */ 77 78 static int ntfs_bypass(struct vop_generic_args *ap); 79 static int ntfs_read(struct vop_read_args *); 80 static int ntfs_write(struct vop_write_args *ap); 81 static int ntfs_getattr(struct vop_getattr_args *ap); 82 static int ntfs_inactive(struct vop_inactive_args *ap); 83 static int ntfs_print(struct vop_print_args *ap); 84 static int ntfs_reclaim(struct vop_reclaim_args *ap); 85 static int ntfs_strategy(struct vop_strategy_args *ap); 86 static int ntfs_access(struct vop_access_args *ap); 87 static int ntfs_open(struct vop_open_args *ap); 88 static int ntfs_close(struct vop_close_args *ap); 89 static int ntfs_readdir(struct vop_readdir_args *ap); 90 static int ntfs_lookup(struct vop_lookup_args *ap); 91 static int ntfs_bmap(struct vop_bmap_args *ap); 92 #if defined(__FreeBSD__) 93 static int ntfs_getpages(struct vop_getpages_args *ap); 94 static int ntfs_putpages(struct vop_putpages_args *); 95 #endif 96 #if defined(__FreeBSD__) || defined(__OpenBSD__) 97 static int ntfs_fsync(struct vop_fsync_args *ap); 98 #endif 99 static int ntfs_pathconf(void *); 100 101 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 102 103 #if defined(__FreeBSD__) 104 int 105 ntfs_getpages(ap) 106 struct vop_getpages_args *ap; 107 { 108 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 109 ap->a_reqpage); 110 } 111 112 int 113 ntfs_putpages(ap) 114 struct vop_putpages_args *ap; 115 { 116 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 117 ap->a_sync, ap->a_rtvals); 118 } 119 #endif 120 121 /* 122 * This is a noop, simply returning what one has been given. 123 */ 124 int 125 ntfs_bmap(ap) 126 struct vop_bmap_args *ap; 127 { 128 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 129 if (ap->a_vpp != NULL) 130 *ap->a_vpp = ap->a_vp; 131 if (ap->a_bnp != NULL) 132 *ap->a_bnp = ap->a_bn; 133 if (ap->a_runp != NULL) 134 *ap->a_runp = 0; 135 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 136 if (ap->a_runb != NULL) 137 *ap->a_runb = 0; 138 #endif 139 return (0); 140 } 141 142 static int 143 ntfs_read(ap) 144 struct vop_read_args *ap; 145 { 146 struct vnode *vp = ap->a_vp; 147 struct fnode *fp = VTOF(vp); 148 struct ntnode *ip = FTONT(fp); 149 struct uio *uio = ap->a_uio; 150 struct ntfsmount *ntmp = ip->i_mp; 151 u_int64_t toread; 152 int error; 153 154 dprintf(("ntfs_read: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 155 156 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 157 158 /* don't allow reading after end of file */ 159 if (uio->uio_offset > fp->f_size) 160 toread = 0; 161 else 162 toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset ); 163 164 dprintf((", toread: %d\n",(u_int32_t)toread)); 165 166 if (toread == 0) 167 return (0); 168 169 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 170 fp->f_attrname, uio->uio_offset, toread, NULL, uio); 171 if (error) { 172 printf("ntfs_read: ntfs_readattr failed: %d\n",error); 173 return (error); 174 } 175 176 return (0); 177 } 178 179 static int 180 ntfs_bypass(ap) 181 struct vop_generic_args *ap; 182 { 183 int error = ENOTTY; 184 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 185 return (error); 186 } 187 188 189 static int 190 ntfs_getattr(ap) 191 struct vop_getattr_args *ap; 192 { 193 struct vnode *vp = ap->a_vp; 194 struct fnode *fp = VTOF(vp); 195 struct ntnode *ip = FTONT(fp); 196 struct vattr *vap = ap->a_vap; 197 198 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 199 200 #if defined(__FreeBSD__) 201 vap->va_fsid = dev2udev(ip->i_dev); 202 #else /* NetBSD */ 203 vap->va_fsid = ip->i_dev; 204 #endif 205 vap->va_fileid = ip->i_number; 206 vap->va_mode = ip->i_mp->ntm_mode; 207 vap->va_nlink = ip->i_nlink; 208 vap->va_uid = ip->i_mp->ntm_uid; 209 vap->va_gid = ip->i_mp->ntm_gid; 210 vap->va_rdev = 0; /* XXX UNODEV ? */ 211 vap->va_size = fp->f_size; 212 vap->va_bytes = fp->f_allocated; 213 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 214 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 215 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 216 vap->va_flags = ip->i_flag; 217 vap->va_gen = 0; 218 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 219 vap->va_type = vp->v_type; 220 vap->va_filerev = 0; 221 return (0); 222 } 223 224 225 /* 226 * Last reference to an ntnode. If necessary, write or delete it. 227 */ 228 int 229 ntfs_inactive(ap) 230 struct vop_inactive_args *ap; 231 { 232 struct vnode *vp = ap->a_vp; 233 #ifdef __OpenBSD__ 234 struct proc *p = ap->a_p; 235 #endif 236 #ifdef NTFS_DEBUG 237 struct ntnode *ip = VTONT(vp); 238 #endif 239 240 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 241 242 #ifdef DIAGNOSTIC 243 if (ntfs_prtactive && vp->v_usecount != 0) 244 vprint("ntfs_inactive: pushing active", vp); 245 #endif 246 247 VOP__UNLOCK(vp, 0, p); 248 249 /* XXX since we don't support any filesystem changes 250 * right now, nothing more needs to be done 251 */ 252 return (0); 253 } 254 255 /* 256 * Reclaim an fnode/ntnode so that it can be used for other purposes. 257 */ 258 int 259 ntfs_reclaim(ap) 260 struct vop_reclaim_args *ap; 261 { 262 struct vnode *vp = ap->a_vp; 263 struct fnode *fp = VTOF(vp); 264 struct ntnode *ip = FTONT(fp); 265 #ifdef __OpenBSD__ 266 struct proc *p = ap->a_p; 267 #endif 268 int error; 269 270 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 271 272 #ifdef DIAGNOSTIC 273 if (ntfs_prtactive && vp->v_usecount != 0) 274 vprint("ntfs_reclaim: pushing active", vp); 275 #endif 276 277 #ifndef __OpenBSD__ 278 if ((error = ntfs_ntget(ip)) != 0) 279 #else 280 if ((error = ntfs_ntget(ip, p)) != 0) 281 #endif 282 return (error); 283 284 /* Purge old data structures associated with the inode. */ 285 cache_purge(vp); 286 287 ntfs_frele(fp); 288 #ifndef __OpenBSD__ 289 ntfs_ntput(ip); 290 #else 291 ntfs_ntput(ip, p); 292 #endif 293 vp->v_data = NULL; 294 295 return (0); 296 } 297 298 static int 299 ntfs_print(ap) 300 struct vop_print_args *ap; 301 { 302 struct ntnode *ip = VTONT(ap->a_vp); 303 304 printf("tag VT_NTFS, ino %u, flag %#x, usecount %d, nlink %ld\n", 305 ip->i_number, ip->i_flag, ip->i_usecount, ip->i_nlink); 306 307 return (0); 308 } 309 310 /* 311 * Calculate the logical to physical mapping if not done already, 312 * then call the device strategy routine. 313 */ 314 int 315 ntfs_strategy(ap) 316 struct vop_strategy_args *ap; 317 { 318 struct buf *bp = ap->a_bp; 319 struct vnode *vp = bp->b_vp; 320 struct fnode *fp = VTOF(vp); 321 struct ntnode *ip = FTONT(fp); 322 struct ntfsmount *ntmp = ip->i_mp; 323 int error; 324 325 #ifdef __FreeBSD__ 326 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 327 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 328 (u_int32_t)bp->b_lblkno)); 329 #else 330 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 331 (u_int32_t)bp->b_blkno, 332 (u_int32_t)bp->b_lblkno)); 333 #endif 334 335 dprintf(("strategy: bcount: %u flags: 0x%x\n", 336 (u_int32_t)bp->b_bcount,bp->b_flags)); 337 338 if (bp->b_flags & B_READ) { 339 u_int32_t toread; 340 341 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 342 clrbuf(bp); 343 error = 0; 344 } else { 345 toread = MIN(bp->b_bcount, 346 fp->f_size - ntfs_cntob(bp->b_blkno)); 347 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 348 toread,(u_int32_t)fp->f_size)); 349 350 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 351 fp->f_attrname, ntfs_cntob(bp->b_blkno), 352 toread, bp->b_data, NULL); 353 354 if (error) { 355 printf("ntfs_strategy: ntfs_readattr failed\n"); 356 bp->b_error = error; 357 bp->b_flags |= B_ERROR; 358 } 359 360 bzero(bp->b_data + toread, bp->b_bcount - toread); 361 } 362 } else { 363 size_t tmp; 364 u_int32_t towrite; 365 366 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 367 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 368 bp->b_error = error = EFBIG; 369 bp->b_flags |= B_ERROR; 370 } else { 371 towrite = MIN(bp->b_bcount, 372 fp->f_size - ntfs_cntob(bp->b_blkno)); 373 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 374 towrite,(u_int32_t)fp->f_size)); 375 376 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 377 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 378 bp->b_data, &tmp, NULL); 379 380 if (error) { 381 printf("ntfs_strategy: ntfs_writeattr fail\n"); 382 bp->b_error = error; 383 bp->b_flags |= B_ERROR; 384 } 385 } 386 } 387 biodone(bp); 388 return (error); 389 } 390 391 static int 392 ntfs_write(ap) 393 struct vop_write_args *ap; 394 { 395 struct vnode *vp = ap->a_vp; 396 struct fnode *fp = VTOF(vp); 397 struct ntnode *ip = FTONT(fp); 398 struct uio *uio = ap->a_uio; 399 struct ntfsmount *ntmp = ip->i_mp; 400 u_int64_t towrite; 401 size_t written; 402 int error; 403 404 dprintf(("ntfs_write: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 405 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 406 407 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 408 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 409 return (EFBIG); 410 } 411 412 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 413 414 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 415 416 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 417 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 418 #ifdef NTFS_DEBUG 419 if (error) 420 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 421 #endif 422 423 return (error); 424 } 425 426 int 427 ntfs_access(ap) 428 struct vop_access_args *ap; 429 { 430 struct vnode *vp = ap->a_vp; 431 struct ntnode *ip = VTONT(vp); 432 struct ucred *cred = ap->a_cred; 433 mode_t mask, mode = ap->a_mode; 434 gid_t *gp; 435 int i; 436 437 dprintf(("ntfs_access: %d\n",ip->i_number)); 438 439 /* 440 * Disallow write attempts on read-only file systems; 441 * unless the file is a socket, fifo, or a block or 442 * character device resident on the file system. 443 */ 444 if (mode & VWRITE) { 445 switch ((int)vp->v_type) { 446 case VDIR: 447 case VLNK: 448 case VREG: 449 if (vp->v_mount->mnt_flag & MNT_RDONLY) 450 return (EROFS); 451 break; 452 } 453 } 454 455 /* Otherwise, user id 0 always gets access. */ 456 if (cred->cr_uid == 0) 457 return (0); 458 459 mask = 0; 460 461 /* Otherwise, check the owner. */ 462 if (cred->cr_uid == ip->i_mp->ntm_uid) { 463 if (mode & VEXEC) 464 mask |= S_IXUSR; 465 if (mode & VREAD) 466 mask |= S_IRUSR; 467 if (mode & VWRITE) 468 mask |= S_IWUSR; 469 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 470 } 471 472 /* Otherwise, check the groups. */ 473 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 474 if (ip->i_mp->ntm_gid == *gp) { 475 if (mode & VEXEC) 476 mask |= S_IXGRP; 477 if (mode & VREAD) 478 mask |= S_IRGRP; 479 if (mode & VWRITE) 480 mask |= S_IWGRP; 481 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 482 } 483 484 /* Otherwise, check everyone else. */ 485 if (mode & VEXEC) 486 mask |= S_IXOTH; 487 if (mode & VREAD) 488 mask |= S_IROTH; 489 if (mode & VWRITE) 490 mask |= S_IWOTH; 491 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 492 } 493 494 /* 495 * Open called. 496 * 497 * Nothing to do. 498 */ 499 /* ARGSUSED */ 500 static int 501 ntfs_open(ap) 502 struct vop_open_args *ap; 503 { 504 #if NTFS_DEBUG 505 struct vnode *vp = ap->a_vp; 506 struct ntnode *ip = VTONT(vp); 507 508 printf("ntfs_open: %d\n",ip->i_number); 509 #endif 510 511 /* 512 * Files marked append-only must be opened for appending. 513 */ 514 515 return (0); 516 } 517 518 /* 519 * Close called. 520 * 521 * Update the times on the inode. 522 */ 523 /* ARGSUSED */ 524 static int 525 ntfs_close(ap) 526 struct vop_close_args *ap; 527 { 528 #if NTFS_DEBUG 529 struct vnode *vp = ap->a_vp; 530 struct ntnode *ip = VTONT(vp); 531 532 printf("ntfs_close: %d\n",ip->i_number); 533 #endif 534 535 return (0); 536 } 537 538 int 539 ntfs_readdir(ap) 540 struct vop_readdir_args *ap; 541 { 542 struct vnode *vp = ap->a_vp; 543 struct fnode *fp = VTOF(vp); 544 struct ntnode *ip = FTONT(fp); 545 struct uio *uio = ap->a_uio; 546 struct ntfsmount *ntmp = ip->i_mp; 547 int i, error = 0; 548 u_int32_t faked = 0, num; 549 int ncookies = 0; 550 struct dirent *cde; 551 off_t off; 552 553 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 554 555 off = uio->uio_offset; 556 557 cde = malloc(sizeof(struct dirent), M_TEMP, M_WAITOK); 558 559 /* Simulate . in every dir except ROOT */ 560 if (ip->i_number != NTFS_ROOTINO 561 && uio->uio_offset < sizeof(struct dirent)) { 562 cde->d_fileno = ip->i_number; 563 cde->d_reclen = sizeof(struct dirent); 564 cde->d_type = DT_DIR; 565 cde->d_namlen = 1; 566 strncpy(cde->d_name, ".", 2); 567 error = uiomove((void *)cde, sizeof(struct dirent), uio); 568 if (error) 569 goto out; 570 571 ncookies++; 572 } 573 574 /* Simulate .. in every dir including ROOT */ 575 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 576 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 577 cde->d_reclen = sizeof(struct dirent); 578 cde->d_type = DT_DIR; 579 cde->d_namlen = 2; 580 strncpy(cde->d_name, "..", 3); 581 582 error = uiomove((void *) cde, sizeof(struct dirent), uio); 583 if (error) 584 goto out; 585 586 ncookies++; 587 } 588 589 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 590 num = uio->uio_offset / sizeof(struct dirent) - faked; 591 592 while (uio->uio_resid >= sizeof(struct dirent)) { 593 struct attr_indexentry *iep; 594 char *fname; 595 size_t remains; 596 int sz; 597 598 #ifndef __OpenBSD__ 599 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 600 #else 601 error = ntfs_ntreaddir(ntmp, fp, num, &iep, uio->uio_procp); 602 #endif 603 if (error) 604 goto out; 605 606 if (NULL == iep) 607 break; 608 609 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 610 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 611 { 612 if(!ntfs_isnamepermitted(ntmp,iep)) 613 continue; 614 615 remains = sizeof(cde->d_name) - 1; 616 fname = cde->d_name; 617 for(i=0; i<iep->ie_fnamelen; i++) { 618 sz = (*ntmp->ntm_wput)(fname, remains, 619 iep->ie_fname[i]); 620 fname += sz; 621 remains -= sz; 622 } 623 *fname = '\0'; 624 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 625 num, cde->d_name, iep->ie_fnametype, 626 iep->ie_flag)); 627 cde->d_namlen = fname - (char *) cde->d_name; 628 cde->d_fileno = iep->ie_number; 629 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 630 cde->d_reclen = sizeof(struct dirent); 631 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 632 633 error = uiomove((void *)cde, sizeof(struct dirent), uio); 634 if (error) 635 goto out; 636 637 ncookies++; 638 num++; 639 } 640 } 641 642 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 643 ncookies,(u_int)(uio->uio_offset - off))); 644 dprintf(("ntfs_readdir: off: %d resid: %d\n", 645 (u_int32_t)uio->uio_offset,uio->uio_resid)); 646 647 if (!error && ap->a_ncookies != NULL) { 648 struct dirent* dpStart; 649 struct dirent* dp; 650 #if defined(__FreeBSD__) || defined(__OpenBSD__) 651 u_long *cookies; 652 u_long *cookiep; 653 #else /* defined(__NetBSD__) */ 654 off_t *cookies; 655 off_t *cookiep; 656 #endif 657 658 dprintf(("ntfs_readdir: %d cookies\n",ncookies)); 659 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 660 panic("ntfs_readdir: unexpected uio from NFS server"); 661 dpStart = (struct dirent *) 662 ((caddr_t)uio->uio_iov->iov_base - 663 (uio->uio_offset - off)); 664 #if defined(__FreeBSD__) 665 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 666 M_TEMP, M_WAITOK); 667 #else /* defined(__NetBSD__) */ 668 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 669 #endif 670 for (dp = dpStart, cookiep = cookies, i=0; 671 i < ncookies; 672 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 673 off += dp->d_reclen; 674 *cookiep++ = (u_int) off; 675 } 676 *ap->a_ncookies = ncookies; 677 *ap->a_cookies = cookies; 678 } 679 /* 680 if (ap->a_eofflag) 681 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 682 */ 683 out: 684 free(cde, M_TEMP); 685 return (error); 686 } 687 688 int 689 ntfs_lookup(ap) 690 struct vop_lookup_args *ap; 691 { 692 struct vnode *dvp = ap->a_dvp; 693 struct ntnode *dip = VTONT(dvp); 694 struct ntfsmount *ntmp = dip->i_mp; 695 struct componentname *cnp = ap->a_cnp; 696 struct ucred *cred = cnp->cn_cred; 697 int error; 698 int lockparent = cnp->cn_flags & LOCKPARENT; 699 #ifdef __OpenBSD__ 700 struct proc *p = cnp->cn_proc; 701 #endif 702 #if NTFS_DEBUG 703 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); 704 #endif 705 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 706 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 707 dip->i_number, lockparent, wantparent)); 708 709 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc); 710 if(error) 711 return (error); 712 713 if ((cnp->cn_flags & ISLASTCN) && 714 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 715 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 716 return (EROFS); 717 718 #if defined(__NetBSD__) || defined(__OpenBSD__) 719 /* 720 * We now have a segment name to search for, and a directory 721 * to search. 722 * 723 * Before tediously performing a linear scan of the directory, 724 * check the name cache to see if the directory/name pair 725 * we are looking for is known already. 726 */ 727 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 728 return (error); 729 #endif 730 731 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 732 dprintf(("ntfs_lookup: faking . directory in %d\n", 733 dip->i_number)); 734 735 VREF(dvp); 736 *ap->a_vpp = dvp; 737 error = 0; 738 } else if (cnp->cn_flags & ISDOTDOT) { 739 struct ntvattr *vap; 740 741 dprintf(("ntfs_lookup: faking .. directory in %d\n", 742 dip->i_number)); 743 744 VOP__UNLOCK(dvp, 0, p); 745 cnp->cn_flags |= PDIRUNLOCK; 746 747 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 748 if(error) 749 return (error); 750 751 dprintf(("ntfs_lookup: parentdir: %d\n", 752 vap->va_a_name->n_pnumber)); 753 error = VFS_VGET(ntmp->ntm_mountp, 754 vap->va_a_name->n_pnumber,ap->a_vpp); 755 ntfs_ntvattrrele(vap); 756 if (error) { 757 if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY, p) == 0) 758 cnp->cn_flags &= ~PDIRUNLOCK; 759 return (error); 760 } 761 762 if (lockparent && (cnp->cn_flags & ISLASTCN)) { 763 error = VN_LOCK(dvp, LK_EXCLUSIVE, p); 764 if (error) { 765 vput( *(ap->a_vpp) ); 766 return (error); 767 } 768 cnp->cn_flags &= ~PDIRUNLOCK; 769 } 770 } else { 771 #ifndef __OpenBSD__ 772 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 773 #else 774 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp, p); 775 #endif 776 if (error) { 777 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 778 return (error); 779 } 780 781 dprintf(("ntfs_lookup: found ino: %d\n", 782 VTONT(*ap->a_vpp)->i_number)); 783 784 if(!lockparent || (cnp->cn_flags & ISLASTCN) == 0) { 785 VOP__UNLOCK(dvp, 0, p); 786 cnp->cn_flags |= PDIRUNLOCK; 787 } 788 } 789 790 if (cnp->cn_flags & MAKEENTRY) 791 cache_enter(dvp, *ap->a_vpp, cnp); 792 793 return (error); 794 } 795 796 #if defined(__FreeBSD__) || defined(__OpenBSD__) 797 /* 798 * Flush the blocks of a file to disk. 799 * 800 * This function is worthless for vnodes that represent directories. Maybe we 801 * could just do a sync if they try an fsync on a directory file. 802 */ 803 static int 804 ntfs_fsync(ap) 805 struct vop_fsync_args *ap; 806 { 807 return (0); 808 } 809 #endif 810 811 /* 812 * Return POSIX pathconf information applicable to NTFS filesystem 813 */ 814 static int 815 ntfs_pathconf(v) 816 void *v; 817 { 818 struct vop_pathconf_args *ap = v; 819 820 switch (ap->a_name) { 821 case _PC_LINK_MAX: 822 *ap->a_retval = 1; 823 return (0); 824 case _PC_NAME_MAX: 825 *ap->a_retval = NTFS_MAXFILENAME; 826 return (0); 827 case _PC_PATH_MAX: 828 *ap->a_retval = PATH_MAX; 829 return (0); 830 case _PC_CHOWN_RESTRICTED: 831 *ap->a_retval = 1; 832 return (0); 833 case _PC_NO_TRUNC: 834 *ap->a_retval = 0; 835 return (0); 836 #ifdef __NetBSD__ 837 case _PC_SYNC_IO: 838 *ap->a_retval = 1; 839 return (0); 840 case _PC_FILESIZEBITS: 841 *ap->a_retval = 64; 842 return (0); 843 #endif 844 default: 845 return (EINVAL); 846 } 847 /* NOTREACHED */ 848 } 849 850 /* 851 * Global vfs data structures 852 */ 853 vop_t **ntfs_vnodeop_p; 854 #if defined(__FreeBSD__) 855 static 856 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 857 { &vop_default_desc, (vop_t *)ntfs_bypass }, 858 859 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 860 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 861 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 862 { &vop_print_desc, (vop_t *)ntfs_print }, 863 { &vop_pathconf_desc, ntfs_pathconf }, 864 865 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 866 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 867 { &vop_lock_desc, (vop_t *)vop_stdlock }, 868 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 869 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 870 871 { &vop_access_desc, (vop_t *)ntfs_access }, 872 { &vop_close_desc, (vop_t *)ntfs_close }, 873 { &vop_open_desc, (vop_t *)ntfs_open }, 874 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 875 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 876 877 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 878 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 879 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 880 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 881 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 882 { &vop_read_desc, (vop_t *)ntfs_read }, 883 { &vop_write_desc, (vop_t *)ntfs_write }, 884 885 { NULL, NULL } 886 }; 887 888 static 889 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 890 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 891 892 VNODEOP_SET(ntfs_vnodeop_opv_desc); 893 894 #elif defined(__OpenBSD__) 895 static 896 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 897 { &vop_default_desc, (vop_t *)ntfs_bypass }, 898 899 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 900 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 901 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 902 { &vop_print_desc, (vop_t *)ntfs_print }, 903 { &vop_pathconf_desc, ntfs_pathconf }, 904 905 { &vop_islocked_desc, (vop_t *)vop_generic_islocked }, 906 { &vop_unlock_desc, (vop_t *)vop_generic_unlock }, 907 { &vop_lock_desc, (vop_t *)vop_generic_lock }, 908 { &vop_lookup_desc, (vop_t *)ntfs_lookup }, 909 910 { &vop_access_desc, (vop_t *)ntfs_access }, 911 { &vop_close_desc, (vop_t *)ntfs_close }, 912 { &vop_open_desc, (vop_t *)ntfs_open }, 913 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 914 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 915 916 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 917 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 918 { &vop_bwrite_desc, (vop_t *)vop_generic_bwrite }, 919 { &vop_read_desc, (vop_t *)ntfs_read }, 920 { &vop_write_desc, (vop_t *)ntfs_write }, 921 922 { NULL, NULL } 923 }; 924 925 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 926 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 927 928 #else /* !FreeBSD && !OpenBSD*/ 929 930 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 931 { &vop_default_desc, (vop_t *) ntfs_bypass }, 932 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 933 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 934 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 935 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 936 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 937 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 938 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 939 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 940 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 941 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 942 { &vop_lease_desc, genfs_lease_check }, /* lease */ 943 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 944 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 945 { &vop_poll_desc, genfs_poll }, /* poll */ 946 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 947 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 948 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 949 { &vop_fsync_desc, genfs_fsync }, /* fsync */ 950 { &vop_seek_desc, genfs_seek }, /* seek */ 951 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 952 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 953 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 954 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 955 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 956 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 957 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 958 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 959 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 960 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 961 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 962 { &vop_lock_desc, genfs_lock }, /* lock */ 963 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 964 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 965 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 966 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 967 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 968 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 969 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 970 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */ 971 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */ 972 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */ 973 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */ 974 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */ 975 { &vop_update_desc, genfs_eopnotsupp }, /* update */ 976 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 977 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 978 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 979 { NULL, NULL } 980 }; 981 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 982 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 983 984 #endif 985