1 /* $NetBSD: ntfs_vnops.c,v 1.35 2007/07/29 13:31:09 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * John Heidemann of the UCLA Ficus project. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp 35 * 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: ntfs_vnops.c,v 1.35 2007/07/29 13:31:09 ad Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/time.h> 45 #include <sys/stat.h> 46 #include <sys/vnode.h> 47 #include <sys/mount.h> 48 #include <sys/namei.h> 49 #include <sys/malloc.h> 50 #include <sys/buf.h> 51 #include <sys/dirent.h> 52 #include <sys/kauth.h> 53 54 #if !defined(__NetBSD__) 55 #include <vm/vm.h> 56 #endif 57 58 #if defined(__FreeBSD__) 59 #include <vm/vnode_pager.h> 60 #endif 61 62 #include <sys/sysctl.h> 63 64 65 #include <fs/ntfs/ntfs.h> 66 #include <fs/ntfs/ntfs_inode.h> 67 #include <fs/ntfs/ntfs_subr.h> 68 #include <miscfs/specfs/specdev.h> 69 #include <miscfs/genfs/genfs.h> 70 71 #include <sys/unistd.h> /* for pathconf(2) constants */ 72 73 static int ntfs_bypass(void *); 74 static int ntfs_read(void *); 75 static int ntfs_write(void *); 76 static int ntfs_getattr(void *); 77 static int ntfs_inactive(void *); 78 static int ntfs_print(void *); 79 static int ntfs_reclaim(void *); 80 static int ntfs_strategy(void *); 81 static int ntfs_access(void *); 82 static int ntfs_open(void *); 83 static int ntfs_close(void *); 84 static int ntfs_readdir(void *); 85 static int ntfs_lookup(void *); 86 static int ntfs_bmap(void *); 87 #if defined(__FreeBSD__) 88 static int ntfs_getpages(struct vop_getpages_args *); 89 static int ntfs_putpages(struct vop_putpages_args *); 90 #endif 91 static int ntfs_fsync(void *); 92 static int ntfs_pathconf(void *); 93 94 extern int prtactive; 95 96 #if defined(__FreeBSD__) 97 int 98 ntfs_getpages(ap) 99 struct vop_getpages_args *ap; 100 { 101 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 102 ap->a_reqpage); 103 } 104 105 int 106 ntfs_putpages(ap) 107 struct vop_putpages_args *ap; 108 { 109 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 110 ap->a_sync, ap->a_rtvals); 111 } 112 #endif 113 114 /* 115 * This is a noop, simply returning what one has been given. 116 */ 117 int 118 ntfs_bmap(void *v) 119 { 120 struct vop_bmap_args /* { 121 struct vnode *a_vp; 122 daddr_t a_bn; 123 struct vnode **a_vpp; 124 daddr_t *a_bnp; 125 int *a_runp; 126 int *a_runb; 127 } */ *ap = v; 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__) 136 if (ap->a_runb != NULL) 137 *ap->a_runb = 0; 138 #endif 139 return (0); 140 } 141 142 static int 143 ntfs_read(void *v) 144 { 145 struct vop_read_args /* { 146 struct vnode *a_vp; 147 struct uio *a_uio; 148 int a_ioflag; 149 kauth_cred_t a_cred; 150 } */ *ap = v; 151 struct vnode *vp = ap->a_vp; 152 struct fnode *fp = VTOF(vp); 153 struct ntnode *ip = FTONT(fp); 154 struct uio *uio = ap->a_uio; 155 struct ntfsmount *ntmp = ip->i_mp; 156 u_int64_t toread; 157 int error; 158 159 dprintf(("ntfs_read: ino: %llu, off: %qd resid: %qd\n", 160 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 161 (long long)uio->uio_resid)); 162 163 dprintf(("ntfs_read: filesize: %qu",(long long)fp->f_size)); 164 165 /* don't allow reading after end of file */ 166 if (uio->uio_offset > fp->f_size) 167 toread = 0; 168 else 169 toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset ); 170 171 dprintf((", toread: %qu\n",(long long)toread)); 172 173 if (toread == 0) 174 return (0); 175 176 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 177 fp->f_attrname, uio->uio_offset, toread, NULL, uio); 178 if (error) { 179 printf("ntfs_read: ntfs_readattr failed: %d\n",error); 180 return (error); 181 } 182 183 return (0); 184 } 185 186 static int 187 ntfs_bypass(void *v) 188 { 189 struct vop_generic_args /* { 190 struct vnodeop_desc *a_desc; 191 <other random data follows, presumably> 192 } */ *ap __unused = v; 193 int error = ENOTTY; 194 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 195 return (error); 196 } 197 198 199 static int 200 ntfs_getattr(void *v) 201 { 202 struct vop_getattr_args /* { 203 struct vnode *a_vp; 204 struct vattr *a_vap; 205 kauth_cred_t a_cred; 206 struct lwp *a_l; 207 } */ *ap = v; 208 struct vnode *vp = ap->a_vp; 209 struct fnode *fp = VTOF(vp); 210 struct ntnode *ip = FTONT(fp); 211 struct vattr *vap = ap->a_vap; 212 213 dprintf(("ntfs_getattr: %llu, flags: %d\n", 214 (unsigned long long)ip->i_number, ip->i_flag)); 215 216 #if defined(__FreeBSD__) 217 vap->va_fsid = dev2udev(ip->i_dev); 218 #else /* NetBSD */ 219 vap->va_fsid = ip->i_dev; 220 #endif 221 vap->va_fileid = ip->i_number; 222 vap->va_mode = ip->i_mp->ntm_mode; 223 vap->va_nlink = ip->i_nlink; 224 vap->va_uid = ip->i_mp->ntm_uid; 225 vap->va_gid = ip->i_mp->ntm_gid; 226 vap->va_rdev = 0; /* XXX UNODEV ? */ 227 vap->va_size = fp->f_size; 228 vap->va_bytes = fp->f_allocated; 229 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 230 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 231 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 232 vap->va_flags = ip->i_flag; 233 vap->va_gen = 0; 234 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 235 vap->va_type = vp->v_type; 236 vap->va_filerev = 0; 237 return (0); 238 } 239 240 241 /* 242 * Last reference to an ntnode. If necessary, write or delete it. 243 */ 244 int 245 ntfs_inactive(void *v) 246 { 247 struct vop_inactive_args /* { 248 struct vnode *a_vp; 249 } */ *ap = v; 250 struct vnode *vp = ap->a_vp; 251 #ifdef NTFS_DEBUG 252 struct ntnode *ip = VTONT(vp); 253 #endif 254 255 dprintf(("ntfs_inactive: vnode: %p, ntnode: %llu\n", vp, 256 (unsigned long long)ip->i_number)); 257 258 if (prtactive && vp->v_usecount != 0) 259 vprint("ntfs_inactive: pushing active", vp); 260 261 VOP_UNLOCK(vp, 0); 262 263 /* XXX since we don't support any filesystem changes 264 * right now, nothing more needs to be done 265 */ 266 return (0); 267 } 268 269 /* 270 * Reclaim an fnode/ntnode so that it can be used for other purposes. 271 */ 272 int 273 ntfs_reclaim(void *v) 274 { 275 struct vop_reclaim_args /* { 276 struct vnode *a_vp; 277 } */ *ap = v; 278 struct vnode *vp = ap->a_vp; 279 struct fnode *fp = VTOF(vp); 280 struct ntnode *ip = FTONT(fp); 281 int error; 282 283 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %llu\n", vp, 284 (unsigned long long)ip->i_number)); 285 286 if (prtactive && vp->v_usecount != 0) 287 vprint("ntfs_reclaim: pushing active", vp); 288 289 if ((error = ntfs_ntget(ip)) != 0) 290 return (error); 291 292 /* Purge old data structures associated with the inode. */ 293 cache_purge(vp); 294 if (ip->i_devvp) { 295 vrele(ip->i_devvp); 296 ip->i_devvp = NULL; 297 } 298 299 genfs_node_destroy(vp); 300 ntfs_frele(fp); 301 ntfs_ntput(ip); 302 vp->v_data = NULL; 303 304 return (0); 305 } 306 307 static int 308 ntfs_print(void *v) 309 { 310 struct vop_print_args /* { 311 struct vnode *a_vp; 312 } */ *ap = v; 313 struct ntnode *ip = VTONT(ap->a_vp); 314 315 printf("tag VT_NTFS, ino %llu, flag %#x, usecount %d, nlink %ld\n", 316 (unsigned long long)ip->i_number, ip->i_flag, ip->i_usecount, 317 ip->i_nlink); 318 printf(" "); 319 lockmgr_printinfo(ap->a_vp->v_vnlock); 320 printf("\n"); 321 return (0); 322 } 323 324 /* 325 * Calculate the logical to physical mapping if not done already, 326 * then call the device strategy routine. 327 */ 328 int 329 ntfs_strategy(void *v) 330 { 331 struct vop_strategy_args /* { 332 struct vnode *a_vp; 333 struct buf *a_bp; 334 } */ *ap = v; 335 struct buf *bp = ap->a_bp; 336 struct vnode *vp = ap->a_vp; 337 struct fnode *fp = VTOF(vp); 338 struct ntnode *ip = FTONT(fp); 339 struct ntfsmount *ntmp = ip->i_mp; 340 int error; 341 342 #ifdef __FreeBSD__ 343 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 344 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 345 (u_int32_t)bp->b_lblkno)); 346 #else 347 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 348 (u_int32_t)bp->b_blkno, 349 (u_int32_t)bp->b_lblkno)); 350 #endif 351 352 dprintf(("strategy: bcount: %u flags: 0x%x\n", 353 (u_int32_t)bp->b_bcount,bp->b_flags)); 354 355 if (bp->b_flags & B_READ) { 356 u_int32_t toread; 357 358 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 359 clrbuf(bp); 360 error = 0; 361 } else { 362 toread = MIN(bp->b_bcount, 363 fp->f_size - ntfs_cntob(bp->b_blkno)); 364 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 365 toread,(u_int32_t)fp->f_size)); 366 367 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 368 fp->f_attrname, ntfs_cntob(bp->b_blkno), 369 toread, bp->b_data, NULL); 370 371 if (error) { 372 printf("ntfs_strategy: ntfs_readattr failed\n"); 373 bp->b_error = error; 374 } 375 376 memset((char *)bp->b_data + toread, 0, 377 bp->b_bcount - toread); 378 } 379 } else { 380 size_t tmp; 381 u_int32_t towrite; 382 383 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 384 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 385 bp->b_error = error = EFBIG; 386 } else { 387 towrite = MIN(bp->b_bcount, 388 fp->f_size - ntfs_cntob(bp->b_blkno)); 389 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 390 towrite,(u_int32_t)fp->f_size)); 391 392 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 393 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 394 bp->b_data, &tmp, NULL); 395 396 if (error) { 397 printf("ntfs_strategy: ntfs_writeattr fail\n"); 398 bp->b_error = error; 399 } 400 } 401 } 402 biodone(bp); 403 return (error); 404 } 405 406 static int 407 ntfs_write(void *v) 408 { 409 struct vop_write_args /* { 410 struct vnode *a_vp; 411 struct uio *a_uio; 412 int a_ioflag; 413 kauth_cred_t a_cred; 414 } */ *ap = v; 415 struct vnode *vp = ap->a_vp; 416 struct fnode *fp = VTOF(vp); 417 struct ntnode *ip = FTONT(fp); 418 struct uio *uio = ap->a_uio; 419 struct ntfsmount *ntmp = ip->i_mp; 420 u_int64_t towrite; 421 size_t written; 422 int error; 423 424 dprintf(("ntfs_write: ino: %llu, off: %qd resid: %qd\n", 425 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 426 (long long)uio->uio_resid)); 427 dprintf(("ntfs_write: filesize: %qu",(long long)fp->f_size)); 428 429 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 430 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 431 return (EFBIG); 432 } 433 434 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 435 436 dprintf((", towrite: %qu\n",(long long)towrite)); 437 438 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 439 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 440 #ifdef NTFS_DEBUG 441 if (error) 442 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 443 #endif 444 445 return (error); 446 } 447 448 int 449 ntfs_access(void *v) 450 { 451 struct vop_access_args /* { 452 struct vnode *a_vp; 453 int a_mode; 454 kauth_cred_t a_cred; 455 struct lwp *a_l; 456 } */ *ap = v; 457 struct vnode *vp = ap->a_vp; 458 struct ntnode *ip = VTONT(vp); 459 kauth_cred_t cred = ap->a_cred; 460 mode_t mask, mode = ap->a_mode; 461 gid_t grp; 462 int i; 463 uint16_t ngroups; 464 465 dprintf(("ntfs_access: %llu\n", (unsigned long long)ip->i_number)); 466 467 /* 468 * Disallow write attempts on read-only file systems; 469 * unless the file is a socket, fifo, or a block or 470 * character device resident on the file system. 471 */ 472 if (mode & VWRITE) { 473 switch ((int)vp->v_type) { 474 case VDIR: 475 case VLNK: 476 case VREG: 477 if (vp->v_mount->mnt_flag & MNT_RDONLY) 478 return (EROFS); 479 break; 480 } 481 } 482 483 /* Otherwise, user id 0 always gets access. */ 484 if (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, NULL) == 0) 485 return (0); 486 487 mask = 0; 488 489 /* Otherwise, check the owner. */ 490 if (kauth_cred_geteuid(cred) == ip->i_mp->ntm_uid) { 491 if (mode & VEXEC) 492 mask |= S_IXUSR; 493 if (mode & VREAD) 494 mask |= S_IRUSR; 495 if (mode & VWRITE) 496 mask |= S_IWUSR; 497 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 498 } 499 500 /* Otherwise, check the groups. */ 501 ngroups = kauth_cred_ngroups(cred); 502 for (i = 0; i < ngroups; i++) { 503 grp = kauth_cred_group(cred, i); 504 if (ip->i_mp->ntm_gid == grp) { 505 if (mode & VEXEC) 506 mask |= S_IXGRP; 507 if (mode & VREAD) 508 mask |= S_IRGRP; 509 if (mode & VWRITE) 510 mask |= S_IWGRP; 511 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 512 } 513 } 514 515 /* Otherwise, check everyone else. */ 516 if (mode & VEXEC) 517 mask |= S_IXOTH; 518 if (mode & VREAD) 519 mask |= S_IROTH; 520 if (mode & VWRITE) 521 mask |= S_IWOTH; 522 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 523 } 524 525 /* 526 * Open called. 527 * 528 * Nothing to do. 529 */ 530 /* ARGSUSED */ 531 static int 532 ntfs_open(void *v) 533 { 534 struct vop_open_args /* { 535 struct vnode *a_vp; 536 int a_mode; 537 kauth_cred_t a_cred; 538 struct lwp *a_l; 539 } */ *ap __unused = v; 540 #ifdef NTFS_DEBUG 541 struct vnode *vp = ap->a_vp; 542 struct ntnode *ip = VTONT(vp); 543 544 printf("ntfs_open: %llu\n", (unsigned long long)ip->i_number); 545 #endif 546 547 /* 548 * Files marked append-only must be opened for appending. 549 */ 550 551 return (0); 552 } 553 554 /* 555 * Close called. 556 * 557 * Update the times on the inode. 558 */ 559 /* ARGSUSED */ 560 static int 561 ntfs_close(void *v) 562 { 563 struct vop_close_args /* { 564 struct vnode *a_vp; 565 int a_fflag; 566 kauth_cred_t a_cred; 567 struct lwp *a_l; 568 } */ *ap __unused = v; 569 #ifdef NTFS_DEBUG 570 struct vnode *vp = ap->a_vp; 571 struct ntnode *ip = VTONT(vp); 572 573 printf("ntfs_close: %llu\n", (unsigned long long)ip->i_number); 574 #endif 575 576 return (0); 577 } 578 579 int 580 ntfs_readdir(void *v) 581 { 582 struct vop_readdir_args /* { 583 struct vnode *a_vp; 584 struct uio *a_uio; 585 kauth_cred_t a_cred; 586 int *a_ncookies; 587 u_int **cookies; 588 } */ *ap = v; 589 struct vnode *vp = ap->a_vp; 590 struct fnode *fp = VTOF(vp); 591 struct ntnode *ip = FTONT(fp); 592 struct uio *uio = ap->a_uio; 593 struct ntfsmount *ntmp = ip->i_mp; 594 int i, error = 0; 595 u_int32_t faked = 0, num; 596 int ncookies = 0; 597 struct dirent *cde; 598 off_t off; 599 600 dprintf(("ntfs_readdir %llu off: %qd resid: %qd\n", 601 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 602 (long long)uio->uio_resid)); 603 604 off = uio->uio_offset; 605 606 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK); 607 608 /* Simulate . in every dir except ROOT */ 609 if (ip->i_number != NTFS_ROOTINO 610 && uio->uio_offset < sizeof(struct dirent)) { 611 cde->d_fileno = ip->i_number; 612 cde->d_reclen = sizeof(struct dirent); 613 cde->d_type = DT_DIR; 614 cde->d_namlen = 1; 615 strncpy(cde->d_name, ".", 2); 616 error = uiomove((void *)cde, sizeof(struct dirent), uio); 617 if (error) 618 goto out; 619 620 ncookies++; 621 } 622 623 /* Simulate .. in every dir including ROOT */ 624 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 625 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 626 cde->d_reclen = sizeof(struct dirent); 627 cde->d_type = DT_DIR; 628 cde->d_namlen = 2; 629 strncpy(cde->d_name, "..", 3); 630 631 error = uiomove((void *) cde, sizeof(struct dirent), uio); 632 if (error) 633 goto out; 634 635 ncookies++; 636 } 637 638 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 639 num = uio->uio_offset / sizeof(struct dirent) - faked; 640 641 while (uio->uio_resid >= sizeof(struct dirent)) { 642 struct attr_indexentry *iep; 643 char *fname; 644 size_t remains; 645 int sz; 646 647 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 648 if (error) 649 goto out; 650 651 if (NULL == iep) 652 break; 653 654 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 655 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 656 { 657 if(!ntfs_isnamepermitted(ntmp,iep)) 658 continue; 659 660 remains = sizeof(cde->d_name) - 1; 661 fname = cde->d_name; 662 for(i=0; i<iep->ie_fnamelen; i++) { 663 sz = (*ntmp->ntm_wput)(fname, remains, 664 iep->ie_fname[i]); 665 fname += sz; 666 remains -= sz; 667 } 668 *fname = '\0'; 669 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 670 num, cde->d_name, iep->ie_fnametype, 671 iep->ie_flag)); 672 cde->d_namlen = fname - (char *) cde->d_name; 673 cde->d_fileno = iep->ie_number; 674 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 675 cde->d_reclen = sizeof(struct dirent); 676 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 677 678 error = uiomove((void *)cde, sizeof(struct dirent), uio); 679 if (error) 680 goto out; 681 682 ncookies++; 683 num++; 684 } 685 } 686 687 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 688 ncookies,(u_int)(uio->uio_offset - off))); 689 dprintf(("ntfs_readdir: off: %qd resid: %qu\n", 690 (long long)uio->uio_offset,(long long)uio->uio_resid)); 691 692 if (!error && ap->a_ncookies != NULL) { 693 struct dirent* dpStart; 694 struct dirent* dp; 695 #if defined(__FreeBSD__) 696 u_long *cookies; 697 u_long *cookiep; 698 #else /* defined(__NetBSD__) */ 699 off_t *cookies; 700 off_t *cookiep; 701 #endif 702 703 dprintf(("ntfs_readdir: %d cookies\n",ncookies)); 704 dpStart = (struct dirent *) 705 ((char *)uio->uio_iov->iov_base - 706 (uio->uio_offset - off)); 707 #if defined(__FreeBSD__) 708 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 709 M_TEMP, M_WAITOK); 710 #else /* defined(__NetBSD__) */ 711 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 712 #endif 713 for (dp = dpStart, cookiep = cookies, i=0; 714 i < ncookies; 715 dp = (struct dirent *)((char *) dp + dp->d_reclen), i++) { 716 off += dp->d_reclen; 717 *cookiep++ = (u_int) off; 718 } 719 *ap->a_ncookies = ncookies; 720 *ap->a_cookies = cookies; 721 } 722 /* 723 if (ap->a_eofflag) 724 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 725 */ 726 out: 727 FREE(cde, M_TEMP); 728 return (error); 729 } 730 731 int 732 ntfs_lookup(void *v) 733 { 734 struct vop_lookup_args /* { 735 struct vnode *a_dvp; 736 struct vnode **a_vpp; 737 struct componentname *a_cnp; 738 } */ *ap = v; 739 struct vnode *dvp = ap->a_dvp; 740 struct ntnode *dip = VTONT(dvp); 741 struct ntfsmount *ntmp = dip->i_mp; 742 struct componentname *cnp = ap->a_cnp; 743 kauth_cred_t cred = cnp->cn_cred; 744 int error; 745 746 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %llu\n", 747 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 748 (unsigned long long)dip->i_number)); 749 750 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_lwp); 751 if(error) 752 return (error); 753 754 if ((cnp->cn_flags & ISLASTCN) && 755 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 756 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 757 return (EROFS); 758 759 #ifdef __NetBSD__ 760 /* 761 * We now have a segment name to search for, and a directory 762 * to search. 763 * 764 * Before tediously performing a linear scan of the directory, 765 * check the name cache to see if the directory/name pair 766 * we are looking for is known already. 767 */ 768 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 769 return (error); 770 #endif 771 772 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 773 dprintf(("ntfs_lookup: faking . directory in %llu\n", 774 (unsigned long long)dip->i_number)); 775 776 VREF(dvp); 777 *ap->a_vpp = dvp; 778 error = 0; 779 } else if (cnp->cn_flags & ISDOTDOT) { 780 struct ntvattr *vap; 781 782 dprintf(("ntfs_lookup: faking .. directory in %llu\n", 783 (unsigned long long)dip->i_number)); 784 785 VOP_UNLOCK(dvp, 0); 786 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 787 if (error) { 788 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 789 return (error); 790 } 791 792 dprintf(("ntfs_lookup: parentdir: %d\n", 793 vap->va_a_name->n_pnumber)); 794 error = VFS_VGET(ntmp->ntm_mountp, 795 vap->va_a_name->n_pnumber,ap->a_vpp); 796 ntfs_ntvattrrele(vap); 797 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 798 if (error) { 799 return (error); 800 } 801 } else { 802 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 803 if (error) { 804 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 805 return (error); 806 } 807 808 dprintf(("ntfs_lookup: found ino: %llu\n", 809 (unsigned long long)VTONT(*ap->a_vpp)->i_number)); 810 } 811 812 if (cnp->cn_flags & MAKEENTRY) 813 cache_enter(dvp, *ap->a_vpp, cnp); 814 815 return (error); 816 } 817 818 /* 819 * Flush the blocks of a file to disk. 820 * 821 * This function is worthless for vnodes that represent directories. Maybe we 822 * could just do a sync if they try an fsync on a directory file. 823 */ 824 static int 825 ntfs_fsync(void *v) 826 { 827 struct vop_fsync_args /* { 828 struct vnode *a_vp; 829 kauth_cred_t a_cred; 830 int a_flags; 831 off_t offlo; 832 off_t offhi; 833 struct lwp *a_l; 834 } */ *ap = v; 835 struct vnode *vp = ap->a_vp; 836 int wait; 837 838 if (ap->a_flags & FSYNC_CACHE) { 839 return EOPNOTSUPP; 840 } 841 842 wait = (ap->a_flags & FSYNC_WAIT) != 0; 843 vflushbuf(vp, wait); 844 845 return 0; 846 } 847 848 /* 849 * Return POSIX pathconf information applicable to NTFS filesystem 850 */ 851 static int 852 ntfs_pathconf(void *v) 853 { 854 struct vop_pathconf_args /* { 855 struct vnode *a_vp; 856 int a_name; 857 register_t *a_retval; 858 } */ *ap = v; 859 860 switch (ap->a_name) { 861 case _PC_LINK_MAX: 862 *ap->a_retval = 1; 863 return (0); 864 case _PC_NAME_MAX: 865 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax; 866 return (0); 867 case _PC_PATH_MAX: 868 *ap->a_retval = PATH_MAX; 869 return (0); 870 case _PC_CHOWN_RESTRICTED: 871 *ap->a_retval = 1; 872 return (0); 873 case _PC_NO_TRUNC: 874 *ap->a_retval = 0; 875 return (0); 876 case _PC_SYNC_IO: 877 *ap->a_retval = 1; 878 return (0); 879 case _PC_FILESIZEBITS: 880 *ap->a_retval = 64; 881 return (0); 882 default: 883 return (EINVAL); 884 } 885 /* NOTREACHED */ 886 } 887 888 /* 889 * Global vfs data structures 890 */ 891 vop_t **ntfs_vnodeop_p; 892 #if defined(__FreeBSD__) 893 static 894 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 895 { &vop_default_desc, (vop_t *)ntfs_bypass }, 896 897 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 898 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 899 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 900 { &vop_print_desc, (vop_t *)ntfs_print }, 901 { &vop_pathconf_desc, ntfs_pathconf }, 902 903 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 904 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 905 { &vop_lock_desc, (vop_t *)vop_stdlock }, 906 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 907 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 908 909 { &vop_access_desc, (vop_t *)ntfs_access }, 910 { &vop_close_desc, (vop_t *)ntfs_close }, 911 { &vop_open_desc, (vop_t *)ntfs_open }, 912 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 913 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 914 915 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 916 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 917 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 918 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 919 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 920 { &vop_read_desc, (vop_t *)ntfs_read }, 921 { &vop_write_desc, (vop_t *)ntfs_write }, 922 923 { NULL, NULL } 924 }; 925 926 static 927 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 928 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 929 930 VNODEOP_SET(ntfs_vnodeop_opv_desc); 931 932 #else /* !FreeBSD */ 933 934 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 935 { &vop_default_desc, (vop_t *) ntfs_bypass }, 936 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 937 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 938 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 939 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 940 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 941 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 942 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 943 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 944 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 945 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 946 { &vop_lease_desc, genfs_lease_check }, /* lease */ 947 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 948 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 949 { &vop_poll_desc, genfs_poll }, /* poll */ 950 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 951 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 952 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 953 { &vop_fsync_desc, (vop_t *) ntfs_fsync }, /* fsync */ 954 { &vop_seek_desc, genfs_seek }, /* seek */ 955 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 956 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 957 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 958 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 959 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 960 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 961 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 962 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 963 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 964 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 965 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 966 { &vop_lock_desc, genfs_lock }, /* lock */ 967 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 968 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 969 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 970 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 971 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 972 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 973 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 974 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 975 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 976 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 977 { NULL, NULL } 978 }; 979 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 980 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 981 982 #endif 983