1 /* $NetBSD: ntfs_vnops.c,v 1.36 2007/11/26 19:01:48 pooka 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 1.36 2007/11/26 19:01:48 pooka 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 } */ *ap = v; 207 struct vnode *vp = ap->a_vp; 208 struct fnode *fp = VTOF(vp); 209 struct ntnode *ip = FTONT(fp); 210 struct vattr *vap = ap->a_vap; 211 212 dprintf(("ntfs_getattr: %llu, flags: %d\n", 213 (unsigned long long)ip->i_number, ip->i_flag)); 214 215 #if defined(__FreeBSD__) 216 vap->va_fsid = dev2udev(ip->i_dev); 217 #else /* NetBSD */ 218 vap->va_fsid = ip->i_dev; 219 #endif 220 vap->va_fileid = ip->i_number; 221 vap->va_mode = ip->i_mp->ntm_mode; 222 vap->va_nlink = ip->i_nlink; 223 vap->va_uid = ip->i_mp->ntm_uid; 224 vap->va_gid = ip->i_mp->ntm_gid; 225 vap->va_rdev = 0; /* XXX UNODEV ? */ 226 vap->va_size = fp->f_size; 227 vap->va_bytes = fp->f_allocated; 228 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 229 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 230 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 231 vap->va_flags = ip->i_flag; 232 vap->va_gen = 0; 233 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 234 vap->va_type = vp->v_type; 235 vap->va_filerev = 0; 236 return (0); 237 } 238 239 240 /* 241 * Last reference to an ntnode. If necessary, write or delete it. 242 */ 243 int 244 ntfs_inactive(void *v) 245 { 246 struct vop_inactive_args /* { 247 struct vnode *a_vp; 248 } */ *ap = v; 249 struct vnode *vp = ap->a_vp; 250 #ifdef NTFS_DEBUG 251 struct ntnode *ip = VTONT(vp); 252 #endif 253 254 dprintf(("ntfs_inactive: vnode: %p, ntnode: %llu\n", vp, 255 (unsigned long long)ip->i_number)); 256 257 if (prtactive && vp->v_usecount != 0) 258 vprint("ntfs_inactive: pushing active", vp); 259 260 VOP_UNLOCK(vp, 0); 261 262 /* XXX since we don't support any filesystem changes 263 * right now, nothing more needs to be done 264 */ 265 return (0); 266 } 267 268 /* 269 * Reclaim an fnode/ntnode so that it can be used for other purposes. 270 */ 271 int 272 ntfs_reclaim(void *v) 273 { 274 struct vop_reclaim_args /* { 275 struct vnode *a_vp; 276 } */ *ap = v; 277 struct vnode *vp = ap->a_vp; 278 struct fnode *fp = VTOF(vp); 279 struct ntnode *ip = FTONT(fp); 280 int error; 281 282 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %llu\n", vp, 283 (unsigned long long)ip->i_number)); 284 285 if (prtactive && vp->v_usecount != 0) 286 vprint("ntfs_reclaim: pushing active", vp); 287 288 if ((error = ntfs_ntget(ip)) != 0) 289 return (error); 290 291 /* Purge old data structures associated with the inode. */ 292 cache_purge(vp); 293 if (ip->i_devvp) { 294 vrele(ip->i_devvp); 295 ip->i_devvp = NULL; 296 } 297 298 genfs_node_destroy(vp); 299 ntfs_frele(fp); 300 ntfs_ntput(ip); 301 vp->v_data = NULL; 302 303 return (0); 304 } 305 306 static int 307 ntfs_print(void *v) 308 { 309 struct vop_print_args /* { 310 struct vnode *a_vp; 311 } */ *ap = v; 312 struct ntnode *ip = VTONT(ap->a_vp); 313 314 printf("tag VT_NTFS, ino %llu, flag %#x, usecount %d, nlink %ld\n", 315 (unsigned long long)ip->i_number, ip->i_flag, ip->i_usecount, 316 ip->i_nlink); 317 printf(" "); 318 lockmgr_printinfo(ap->a_vp->v_vnlock); 319 printf("\n"); 320 return (0); 321 } 322 323 /* 324 * Calculate the logical to physical mapping if not done already, 325 * then call the device strategy routine. 326 */ 327 int 328 ntfs_strategy(void *v) 329 { 330 struct vop_strategy_args /* { 331 struct vnode *a_vp; 332 struct buf *a_bp; 333 } */ *ap = v; 334 struct buf *bp = ap->a_bp; 335 struct vnode *vp = ap->a_vp; 336 struct fnode *fp = VTOF(vp); 337 struct ntnode *ip = FTONT(fp); 338 struct ntfsmount *ntmp = ip->i_mp; 339 int error; 340 341 #ifdef __FreeBSD__ 342 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 343 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 344 (u_int32_t)bp->b_lblkno)); 345 #else 346 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 347 (u_int32_t)bp->b_blkno, 348 (u_int32_t)bp->b_lblkno)); 349 #endif 350 351 dprintf(("strategy: bcount: %u flags: 0x%x\n", 352 (u_int32_t)bp->b_bcount,bp->b_flags)); 353 354 if (bp->b_flags & B_READ) { 355 u_int32_t toread; 356 357 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 358 clrbuf(bp); 359 error = 0; 360 } else { 361 toread = MIN(bp->b_bcount, 362 fp->f_size - ntfs_cntob(bp->b_blkno)); 363 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 364 toread,(u_int32_t)fp->f_size)); 365 366 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 367 fp->f_attrname, ntfs_cntob(bp->b_blkno), 368 toread, bp->b_data, NULL); 369 370 if (error) { 371 printf("ntfs_strategy: ntfs_readattr failed\n"); 372 bp->b_error = error; 373 } 374 375 memset((char *)bp->b_data + toread, 0, 376 bp->b_bcount - toread); 377 } 378 } else { 379 size_t tmp; 380 u_int32_t towrite; 381 382 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 383 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 384 bp->b_error = error = EFBIG; 385 } else { 386 towrite = MIN(bp->b_bcount, 387 fp->f_size - ntfs_cntob(bp->b_blkno)); 388 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 389 towrite,(u_int32_t)fp->f_size)); 390 391 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 392 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 393 bp->b_data, &tmp, NULL); 394 395 if (error) { 396 printf("ntfs_strategy: ntfs_writeattr fail\n"); 397 bp->b_error = error; 398 } 399 } 400 } 401 biodone(bp); 402 return (error); 403 } 404 405 static int 406 ntfs_write(void *v) 407 { 408 struct vop_write_args /* { 409 struct vnode *a_vp; 410 struct uio *a_uio; 411 int a_ioflag; 412 kauth_cred_t a_cred; 413 } */ *ap = v; 414 struct vnode *vp = ap->a_vp; 415 struct fnode *fp = VTOF(vp); 416 struct ntnode *ip = FTONT(fp); 417 struct uio *uio = ap->a_uio; 418 struct ntfsmount *ntmp = ip->i_mp; 419 u_int64_t towrite; 420 size_t written; 421 int error; 422 423 dprintf(("ntfs_write: ino: %llu, off: %qd resid: %qd\n", 424 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 425 (long long)uio->uio_resid)); 426 dprintf(("ntfs_write: filesize: %qu",(long long)fp->f_size)); 427 428 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 429 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 430 return (EFBIG); 431 } 432 433 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 434 435 dprintf((", towrite: %qu\n",(long long)towrite)); 436 437 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 438 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 439 #ifdef NTFS_DEBUG 440 if (error) 441 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 442 #endif 443 444 return (error); 445 } 446 447 int 448 ntfs_access(void *v) 449 { 450 struct vop_access_args /* { 451 struct vnode *a_vp; 452 int a_mode; 453 kauth_cred_t a_cred; 454 } */ *ap = v; 455 struct vnode *vp = ap->a_vp; 456 struct ntnode *ip = VTONT(vp); 457 kauth_cred_t cred = ap->a_cred; 458 mode_t mask, mode = ap->a_mode; 459 gid_t grp; 460 int i; 461 uint16_t ngroups; 462 463 dprintf(("ntfs_access: %llu\n", (unsigned long long)ip->i_number)); 464 465 /* 466 * Disallow write attempts on read-only file systems; 467 * unless the file is a socket, fifo, or a block or 468 * character device resident on the file system. 469 */ 470 if (mode & VWRITE) { 471 switch ((int)vp->v_type) { 472 case VDIR: 473 case VLNK: 474 case VREG: 475 if (vp->v_mount->mnt_flag & MNT_RDONLY) 476 return (EROFS); 477 break; 478 } 479 } 480 481 /* Otherwise, user id 0 always gets access. */ 482 if (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, NULL) == 0) 483 return (0); 484 485 mask = 0; 486 487 /* Otherwise, check the owner. */ 488 if (kauth_cred_geteuid(cred) == ip->i_mp->ntm_uid) { 489 if (mode & VEXEC) 490 mask |= S_IXUSR; 491 if (mode & VREAD) 492 mask |= S_IRUSR; 493 if (mode & VWRITE) 494 mask |= S_IWUSR; 495 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 496 } 497 498 /* Otherwise, check the groups. */ 499 ngroups = kauth_cred_ngroups(cred); 500 for (i = 0; i < ngroups; i++) { 501 grp = kauth_cred_group(cred, i); 502 if (ip->i_mp->ntm_gid == grp) { 503 if (mode & VEXEC) 504 mask |= S_IXGRP; 505 if (mode & VREAD) 506 mask |= S_IRGRP; 507 if (mode & VWRITE) 508 mask |= S_IWGRP; 509 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 510 } 511 } 512 513 /* Otherwise, check everyone else. */ 514 if (mode & VEXEC) 515 mask |= S_IXOTH; 516 if (mode & VREAD) 517 mask |= S_IROTH; 518 if (mode & VWRITE) 519 mask |= S_IWOTH; 520 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 521 } 522 523 /* 524 * Open called. 525 * 526 * Nothing to do. 527 */ 528 /* ARGSUSED */ 529 static int 530 ntfs_open(void *v) 531 { 532 struct vop_open_args /* { 533 struct vnode *a_vp; 534 int a_mode; 535 kauth_cred_t a_cred; 536 } */ *ap __unused = v; 537 #ifdef NTFS_DEBUG 538 struct vnode *vp = ap->a_vp; 539 struct ntnode *ip = VTONT(vp); 540 541 printf("ntfs_open: %llu\n", (unsigned long long)ip->i_number); 542 #endif 543 544 /* 545 * Files marked append-only must be opened for appending. 546 */ 547 548 return (0); 549 } 550 551 /* 552 * Close called. 553 * 554 * Update the times on the inode. 555 */ 556 /* ARGSUSED */ 557 static int 558 ntfs_close(void *v) 559 { 560 struct vop_close_args /* { 561 struct vnode *a_vp; 562 int a_fflag; 563 kauth_cred_t a_cred; 564 } */ *ap __unused = v; 565 #ifdef NTFS_DEBUG 566 struct vnode *vp = ap->a_vp; 567 struct ntnode *ip = VTONT(vp); 568 569 printf("ntfs_close: %llu\n", (unsigned long long)ip->i_number); 570 #endif 571 572 return (0); 573 } 574 575 int 576 ntfs_readdir(void *v) 577 { 578 struct vop_readdir_args /* { 579 struct vnode *a_vp; 580 struct uio *a_uio; 581 kauth_cred_t a_cred; 582 int *a_ncookies; 583 u_int **cookies; 584 } */ *ap = v; 585 struct vnode *vp = ap->a_vp; 586 struct fnode *fp = VTOF(vp); 587 struct ntnode *ip = FTONT(fp); 588 struct uio *uio = ap->a_uio; 589 struct ntfsmount *ntmp = ip->i_mp; 590 int i, error = 0; 591 u_int32_t faked = 0, num; 592 int ncookies = 0; 593 struct dirent *cde; 594 off_t off; 595 596 dprintf(("ntfs_readdir %llu off: %qd resid: %qd\n", 597 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 598 (long long)uio->uio_resid)); 599 600 off = uio->uio_offset; 601 602 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK); 603 604 /* Simulate . in every dir except ROOT */ 605 if (ip->i_number != NTFS_ROOTINO 606 && uio->uio_offset < sizeof(struct dirent)) { 607 cde->d_fileno = ip->i_number; 608 cde->d_reclen = sizeof(struct dirent); 609 cde->d_type = DT_DIR; 610 cde->d_namlen = 1; 611 strncpy(cde->d_name, ".", 2); 612 error = uiomove((void *)cde, sizeof(struct dirent), uio); 613 if (error) 614 goto out; 615 616 ncookies++; 617 } 618 619 /* Simulate .. in every dir including ROOT */ 620 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 621 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 622 cde->d_reclen = sizeof(struct dirent); 623 cde->d_type = DT_DIR; 624 cde->d_namlen = 2; 625 strncpy(cde->d_name, "..", 3); 626 627 error = uiomove((void *) cde, sizeof(struct dirent), uio); 628 if (error) 629 goto out; 630 631 ncookies++; 632 } 633 634 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 635 num = uio->uio_offset / sizeof(struct dirent) - faked; 636 637 while (uio->uio_resid >= sizeof(struct dirent)) { 638 struct attr_indexentry *iep; 639 char *fname; 640 size_t remains; 641 int sz; 642 643 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 644 if (error) 645 goto out; 646 647 if (NULL == iep) 648 break; 649 650 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 651 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 652 { 653 if(!ntfs_isnamepermitted(ntmp,iep)) 654 continue; 655 656 remains = sizeof(cde->d_name) - 1; 657 fname = cde->d_name; 658 for(i=0; i<iep->ie_fnamelen; i++) { 659 sz = (*ntmp->ntm_wput)(fname, remains, 660 iep->ie_fname[i]); 661 fname += sz; 662 remains -= sz; 663 } 664 *fname = '\0'; 665 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 666 num, cde->d_name, iep->ie_fnametype, 667 iep->ie_flag)); 668 cde->d_namlen = fname - (char *) cde->d_name; 669 cde->d_fileno = iep->ie_number; 670 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 671 cde->d_reclen = sizeof(struct dirent); 672 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 673 674 error = uiomove((void *)cde, sizeof(struct dirent), uio); 675 if (error) 676 goto out; 677 678 ncookies++; 679 num++; 680 } 681 } 682 683 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 684 ncookies,(u_int)(uio->uio_offset - off))); 685 dprintf(("ntfs_readdir: off: %qd resid: %qu\n", 686 (long long)uio->uio_offset,(long long)uio->uio_resid)); 687 688 if (!error && ap->a_ncookies != NULL) { 689 struct dirent* dpStart; 690 struct dirent* dp; 691 #if defined(__FreeBSD__) 692 u_long *cookies; 693 u_long *cookiep; 694 #else /* defined(__NetBSD__) */ 695 off_t *cookies; 696 off_t *cookiep; 697 #endif 698 699 dprintf(("ntfs_readdir: %d cookies\n",ncookies)); 700 dpStart = (struct dirent *) 701 ((char *)uio->uio_iov->iov_base - 702 (uio->uio_offset - off)); 703 #if defined(__FreeBSD__) 704 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 705 M_TEMP, M_WAITOK); 706 #else /* defined(__NetBSD__) */ 707 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 708 #endif 709 for (dp = dpStart, cookiep = cookies, i=0; 710 i < ncookies; 711 dp = (struct dirent *)((char *) dp + dp->d_reclen), i++) { 712 off += dp->d_reclen; 713 *cookiep++ = (u_int) off; 714 } 715 *ap->a_ncookies = ncookies; 716 *ap->a_cookies = cookies; 717 } 718 /* 719 if (ap->a_eofflag) 720 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 721 */ 722 out: 723 FREE(cde, M_TEMP); 724 return (error); 725 } 726 727 int 728 ntfs_lookup(void *v) 729 { 730 struct vop_lookup_args /* { 731 struct vnode *a_dvp; 732 struct vnode **a_vpp; 733 struct componentname *a_cnp; 734 } */ *ap = v; 735 struct vnode *dvp = ap->a_dvp; 736 struct ntnode *dip = VTONT(dvp); 737 struct ntfsmount *ntmp = dip->i_mp; 738 struct componentname *cnp = ap->a_cnp; 739 kauth_cred_t cred = cnp->cn_cred; 740 int error; 741 742 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %llu\n", 743 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 744 (unsigned long long)dip->i_number)); 745 746 error = VOP_ACCESS(dvp, VEXEC, cred); 747 if(error) 748 return (error); 749 750 if ((cnp->cn_flags & ISLASTCN) && 751 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 752 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 753 return (EROFS); 754 755 #ifdef __NetBSD__ 756 /* 757 * We now have a segment name to search for, and a directory 758 * to search. 759 * 760 * Before tediously performing a linear scan of the directory, 761 * check the name cache to see if the directory/name pair 762 * we are looking for is known already. 763 */ 764 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 765 return (error); 766 #endif 767 768 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 769 dprintf(("ntfs_lookup: faking . directory in %llu\n", 770 (unsigned long long)dip->i_number)); 771 772 VREF(dvp); 773 *ap->a_vpp = dvp; 774 error = 0; 775 } else if (cnp->cn_flags & ISDOTDOT) { 776 struct ntvattr *vap; 777 778 dprintf(("ntfs_lookup: faking .. directory in %llu\n", 779 (unsigned long long)dip->i_number)); 780 781 VOP_UNLOCK(dvp, 0); 782 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 783 if (error) { 784 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 785 return (error); 786 } 787 788 dprintf(("ntfs_lookup: parentdir: %d\n", 789 vap->va_a_name->n_pnumber)); 790 error = VFS_VGET(ntmp->ntm_mountp, 791 vap->va_a_name->n_pnumber,ap->a_vpp); 792 ntfs_ntvattrrele(vap); 793 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 794 if (error) { 795 return (error); 796 } 797 } else { 798 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 799 if (error) { 800 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 801 return (error); 802 } 803 804 dprintf(("ntfs_lookup: found ino: %llu\n", 805 (unsigned long long)VTONT(*ap->a_vpp)->i_number)); 806 } 807 808 if (cnp->cn_flags & MAKEENTRY) 809 cache_enter(dvp, *ap->a_vpp, cnp); 810 811 return (error); 812 } 813 814 /* 815 * Flush the blocks of a file to disk. 816 * 817 * This function is worthless for vnodes that represent directories. Maybe we 818 * could just do a sync if they try an fsync on a directory file. 819 */ 820 static int 821 ntfs_fsync(void *v) 822 { 823 struct vop_fsync_args /* { 824 struct vnode *a_vp; 825 kauth_cred_t a_cred; 826 int a_flags; 827 off_t offlo; 828 off_t offhi; 829 } */ *ap = v; 830 struct vnode *vp = ap->a_vp; 831 int wait; 832 833 if (ap->a_flags & FSYNC_CACHE) { 834 return EOPNOTSUPP; 835 } 836 837 wait = (ap->a_flags & FSYNC_WAIT) != 0; 838 vflushbuf(vp, wait); 839 840 return 0; 841 } 842 843 /* 844 * Return POSIX pathconf information applicable to NTFS filesystem 845 */ 846 static int 847 ntfs_pathconf(void *v) 848 { 849 struct vop_pathconf_args /* { 850 struct vnode *a_vp; 851 int a_name; 852 register_t *a_retval; 853 } */ *ap = v; 854 855 switch (ap->a_name) { 856 case _PC_LINK_MAX: 857 *ap->a_retval = 1; 858 return (0); 859 case _PC_NAME_MAX: 860 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax; 861 return (0); 862 case _PC_PATH_MAX: 863 *ap->a_retval = PATH_MAX; 864 return (0); 865 case _PC_CHOWN_RESTRICTED: 866 *ap->a_retval = 1; 867 return (0); 868 case _PC_NO_TRUNC: 869 *ap->a_retval = 0; 870 return (0); 871 case _PC_SYNC_IO: 872 *ap->a_retval = 1; 873 return (0); 874 case _PC_FILESIZEBITS: 875 *ap->a_retval = 64; 876 return (0); 877 default: 878 return (EINVAL); 879 } 880 /* NOTREACHED */ 881 } 882 883 /* 884 * Global vfs data structures 885 */ 886 vop_t **ntfs_vnodeop_p; 887 #if defined(__FreeBSD__) 888 static 889 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 890 { &vop_default_desc, (vop_t *)ntfs_bypass }, 891 892 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 893 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 894 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 895 { &vop_print_desc, (vop_t *)ntfs_print }, 896 { &vop_pathconf_desc, ntfs_pathconf }, 897 898 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 899 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 900 { &vop_lock_desc, (vop_t *)vop_stdlock }, 901 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 902 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 903 904 { &vop_access_desc, (vop_t *)ntfs_access }, 905 { &vop_close_desc, (vop_t *)ntfs_close }, 906 { &vop_open_desc, (vop_t *)ntfs_open }, 907 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 908 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 909 910 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 911 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 912 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 913 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 914 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 915 { &vop_read_desc, (vop_t *)ntfs_read }, 916 { &vop_write_desc, (vop_t *)ntfs_write }, 917 918 { NULL, NULL } 919 }; 920 921 static 922 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 923 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 924 925 VNODEOP_SET(ntfs_vnodeop_opv_desc); 926 927 #else /* !FreeBSD */ 928 929 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 930 { &vop_default_desc, (vop_t *) ntfs_bypass }, 931 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 932 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 933 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 934 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 935 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 936 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 937 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 938 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 939 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 940 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 941 { &vop_lease_desc, genfs_lease_check }, /* lease */ 942 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 943 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 944 { &vop_poll_desc, genfs_poll }, /* poll */ 945 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 946 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 947 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 948 { &vop_fsync_desc, (vop_t *) ntfs_fsync }, /* fsync */ 949 { &vop_seek_desc, genfs_seek }, /* seek */ 950 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 951 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 952 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 953 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 954 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 955 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 956 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 957 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 958 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 959 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 960 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 961 { &vop_lock_desc, genfs_lock }, /* lock */ 962 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 963 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 964 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 965 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 966 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 967 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 968 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 969 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 970 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 971 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 972 { NULL, NULL } 973 }; 974 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 975 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 976 977 #endif 978