ntfs_vnops.c revision 1.37
1 /* $NetBSD: ntfs_vnops.c,v 1.37 2008/01/17 10:39:14 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 1.37 2008/01/17 10:39:14 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 } */ *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 VOP_UNLOCK(vp, 0); 258 259 /* XXX since we don't support any filesystem changes 260 * right now, nothing more needs to be done 261 */ 262 return (0); 263 } 264 265 /* 266 * Reclaim an fnode/ntnode so that it can be used for other purposes. 267 */ 268 int 269 ntfs_reclaim(void *v) 270 { 271 struct vop_reclaim_args /* { 272 struct vnode *a_vp; 273 } */ *ap = v; 274 struct vnode *vp = ap->a_vp; 275 struct fnode *fp = VTOF(vp); 276 struct ntnode *ip = FTONT(fp); 277 int error; 278 279 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %llu\n", vp, 280 (unsigned long long)ip->i_number)); 281 282 if (prtactive && vp->v_usecount > 1) 283 vprint("ntfs_reclaim: pushing active", vp); 284 285 if ((error = ntfs_ntget(ip)) != 0) 286 return (error); 287 288 /* Purge old data structures associated with the inode. */ 289 cache_purge(vp); 290 if (ip->i_devvp) { 291 vrele(ip->i_devvp); 292 ip->i_devvp = NULL; 293 } 294 295 genfs_node_destroy(vp); 296 ntfs_frele(fp); 297 ntfs_ntput(ip); 298 vp->v_data = NULL; 299 300 return (0); 301 } 302 303 static int 304 ntfs_print(void *v) 305 { 306 struct vop_print_args /* { 307 struct vnode *a_vp; 308 } */ *ap = v; 309 struct ntnode *ip = VTONT(ap->a_vp); 310 311 printf("tag VT_NTFS, ino %llu, flag %#x, usecount %d, nlink %ld\n", 312 (unsigned long long)ip->i_number, ip->i_flag, ip->i_usecount, 313 ip->i_nlink); 314 printf(" "); 315 lockmgr_printinfo(ap->a_vp->v_vnlock); 316 printf("\n"); 317 return (0); 318 } 319 320 /* 321 * Calculate the logical to physical mapping if not done already, 322 * then call the device strategy routine. 323 */ 324 int 325 ntfs_strategy(void *v) 326 { 327 struct vop_strategy_args /* { 328 struct vnode *a_vp; 329 struct buf *a_bp; 330 } */ *ap = v; 331 struct buf *bp = ap->a_bp; 332 struct vnode *vp = ap->a_vp; 333 struct fnode *fp = VTOF(vp); 334 struct ntnode *ip = FTONT(fp); 335 struct ntfsmount *ntmp = ip->i_mp; 336 int error; 337 338 #ifdef __FreeBSD__ 339 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 340 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 341 (u_int32_t)bp->b_lblkno)); 342 #else 343 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 344 (u_int32_t)bp->b_blkno, 345 (u_int32_t)bp->b_lblkno)); 346 #endif 347 348 dprintf(("strategy: bcount: %u flags: 0x%x\n", 349 (u_int32_t)bp->b_bcount,bp->b_flags)); 350 351 if (bp->b_flags & B_READ) { 352 u_int32_t toread; 353 354 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 355 clrbuf(bp); 356 error = 0; 357 } else { 358 toread = MIN(bp->b_bcount, 359 fp->f_size - ntfs_cntob(bp->b_blkno)); 360 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 361 toread,(u_int32_t)fp->f_size)); 362 363 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 364 fp->f_attrname, ntfs_cntob(bp->b_blkno), 365 toread, bp->b_data, NULL); 366 367 if (error) { 368 printf("ntfs_strategy: ntfs_readattr failed\n"); 369 bp->b_error = error; 370 } 371 372 memset((char *)bp->b_data + toread, 0, 373 bp->b_bcount - toread); 374 } 375 } else { 376 size_t tmp; 377 u_int32_t towrite; 378 379 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 380 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 381 bp->b_error = error = EFBIG; 382 } else { 383 towrite = MIN(bp->b_bcount, 384 fp->f_size - ntfs_cntob(bp->b_blkno)); 385 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 386 towrite,(u_int32_t)fp->f_size)); 387 388 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 389 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 390 bp->b_data, &tmp, NULL); 391 392 if (error) { 393 printf("ntfs_strategy: ntfs_writeattr fail\n"); 394 bp->b_error = error; 395 } 396 } 397 } 398 biodone(bp); 399 return (error); 400 } 401 402 static int 403 ntfs_write(void *v) 404 { 405 struct vop_write_args /* { 406 struct vnode *a_vp; 407 struct uio *a_uio; 408 int a_ioflag; 409 kauth_cred_t a_cred; 410 } */ *ap = v; 411 struct vnode *vp = ap->a_vp; 412 struct fnode *fp = VTOF(vp); 413 struct ntnode *ip = FTONT(fp); 414 struct uio *uio = ap->a_uio; 415 struct ntfsmount *ntmp = ip->i_mp; 416 u_int64_t towrite; 417 size_t written; 418 int error; 419 420 dprintf(("ntfs_write: ino: %llu, off: %qd resid: %qd\n", 421 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 422 (long long)uio->uio_resid)); 423 dprintf(("ntfs_write: filesize: %qu",(long long)fp->f_size)); 424 425 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 426 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 427 return (EFBIG); 428 } 429 430 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 431 432 dprintf((", towrite: %qu\n",(long long)towrite)); 433 434 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 435 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 436 #ifdef NTFS_DEBUG 437 if (error) 438 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 439 #endif 440 441 return (error); 442 } 443 444 int 445 ntfs_access(void *v) 446 { 447 struct vop_access_args /* { 448 struct vnode *a_vp; 449 int a_mode; 450 kauth_cred_t a_cred; 451 } */ *ap = v; 452 struct vnode *vp = ap->a_vp; 453 struct ntnode *ip = VTONT(vp); 454 kauth_cred_t cred = ap->a_cred; 455 mode_t mask, mode = ap->a_mode; 456 gid_t grp; 457 int i; 458 uint16_t ngroups; 459 460 dprintf(("ntfs_access: %llu\n", (unsigned long long)ip->i_number)); 461 462 /* 463 * Disallow write attempts on read-only file systems; 464 * unless the file is a socket, fifo, or a block or 465 * character device resident on the file system. 466 */ 467 if (mode & VWRITE) { 468 switch ((int)vp->v_type) { 469 case VDIR: 470 case VLNK: 471 case VREG: 472 if (vp->v_mount->mnt_flag & MNT_RDONLY) 473 return (EROFS); 474 break; 475 } 476 } 477 478 /* Otherwise, user id 0 always gets access. */ 479 if (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, NULL) == 0) 480 return (0); 481 482 mask = 0; 483 484 /* Otherwise, check the owner. */ 485 if (kauth_cred_geteuid(cred) == ip->i_mp->ntm_uid) { 486 if (mode & VEXEC) 487 mask |= S_IXUSR; 488 if (mode & VREAD) 489 mask |= S_IRUSR; 490 if (mode & VWRITE) 491 mask |= S_IWUSR; 492 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 493 } 494 495 /* Otherwise, check the groups. */ 496 ngroups = kauth_cred_ngroups(cred); 497 for (i = 0; i < ngroups; i++) { 498 grp = kauth_cred_group(cred, i); 499 if (ip->i_mp->ntm_gid == grp) { 500 if (mode & VEXEC) 501 mask |= S_IXGRP; 502 if (mode & VREAD) 503 mask |= S_IRGRP; 504 if (mode & VWRITE) 505 mask |= S_IWGRP; 506 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 507 } 508 } 509 510 /* Otherwise, check everyone else. */ 511 if (mode & VEXEC) 512 mask |= S_IXOTH; 513 if (mode & VREAD) 514 mask |= S_IROTH; 515 if (mode & VWRITE) 516 mask |= S_IWOTH; 517 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 518 } 519 520 /* 521 * Open called. 522 * 523 * Nothing to do. 524 */ 525 /* ARGSUSED */ 526 static int 527 ntfs_open(void *v) 528 { 529 struct vop_open_args /* { 530 struct vnode *a_vp; 531 int a_mode; 532 kauth_cred_t a_cred; 533 } */ *ap __unused = v; 534 #ifdef NTFS_DEBUG 535 struct vnode *vp = ap->a_vp; 536 struct ntnode *ip = VTONT(vp); 537 538 printf("ntfs_open: %llu\n", (unsigned long long)ip->i_number); 539 #endif 540 541 /* 542 * Files marked append-only must be opened for appending. 543 */ 544 545 return (0); 546 } 547 548 /* 549 * Close called. 550 * 551 * Update the times on the inode. 552 */ 553 /* ARGSUSED */ 554 static int 555 ntfs_close(void *v) 556 { 557 struct vop_close_args /* { 558 struct vnode *a_vp; 559 int a_fflag; 560 kauth_cred_t a_cred; 561 } */ *ap __unused = v; 562 #ifdef NTFS_DEBUG 563 struct vnode *vp = ap->a_vp; 564 struct ntnode *ip = VTONT(vp); 565 566 printf("ntfs_close: %llu\n", (unsigned long long)ip->i_number); 567 #endif 568 569 return (0); 570 } 571 572 int 573 ntfs_readdir(void *v) 574 { 575 struct vop_readdir_args /* { 576 struct vnode *a_vp; 577 struct uio *a_uio; 578 kauth_cred_t a_cred; 579 int *a_ncookies; 580 u_int **cookies; 581 } */ *ap = v; 582 struct vnode *vp = ap->a_vp; 583 struct fnode *fp = VTOF(vp); 584 struct ntnode *ip = FTONT(fp); 585 struct uio *uio = ap->a_uio; 586 struct ntfsmount *ntmp = ip->i_mp; 587 int i, error = 0; 588 u_int32_t faked = 0, num; 589 int ncookies = 0; 590 struct dirent *cde; 591 off_t off; 592 593 dprintf(("ntfs_readdir %llu off: %qd resid: %qd\n", 594 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 595 (long long)uio->uio_resid)); 596 597 off = uio->uio_offset; 598 599 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK); 600 601 /* Simulate . in every dir except ROOT */ 602 if (ip->i_number != NTFS_ROOTINO 603 && uio->uio_offset < sizeof(struct dirent)) { 604 cde->d_fileno = ip->i_number; 605 cde->d_reclen = sizeof(struct dirent); 606 cde->d_type = DT_DIR; 607 cde->d_namlen = 1; 608 strncpy(cde->d_name, ".", 2); 609 error = uiomove((void *)cde, sizeof(struct dirent), uio); 610 if (error) 611 goto out; 612 613 ncookies++; 614 } 615 616 /* Simulate .. in every dir including ROOT */ 617 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 618 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 619 cde->d_reclen = sizeof(struct dirent); 620 cde->d_type = DT_DIR; 621 cde->d_namlen = 2; 622 strncpy(cde->d_name, "..", 3); 623 624 error = uiomove((void *) cde, sizeof(struct dirent), uio); 625 if (error) 626 goto out; 627 628 ncookies++; 629 } 630 631 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 632 num = uio->uio_offset / sizeof(struct dirent) - faked; 633 634 while (uio->uio_resid >= sizeof(struct dirent)) { 635 struct attr_indexentry *iep; 636 char *fname; 637 size_t remains; 638 int sz; 639 640 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 641 if (error) 642 goto out; 643 644 if (NULL == iep) 645 break; 646 647 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 648 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 649 { 650 if(!ntfs_isnamepermitted(ntmp,iep)) 651 continue; 652 653 remains = sizeof(cde->d_name) - 1; 654 fname = cde->d_name; 655 for(i=0; i<iep->ie_fnamelen; i++) { 656 sz = (*ntmp->ntm_wput)(fname, remains, 657 iep->ie_fname[i]); 658 fname += sz; 659 remains -= sz; 660 } 661 *fname = '\0'; 662 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 663 num, cde->d_name, iep->ie_fnametype, 664 iep->ie_flag)); 665 cde->d_namlen = fname - (char *) cde->d_name; 666 cde->d_fileno = iep->ie_number; 667 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 668 cde->d_reclen = sizeof(struct dirent); 669 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 670 671 error = uiomove((void *)cde, sizeof(struct dirent), uio); 672 if (error) 673 goto out; 674 675 ncookies++; 676 num++; 677 } 678 } 679 680 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 681 ncookies,(u_int)(uio->uio_offset - off))); 682 dprintf(("ntfs_readdir: off: %qd resid: %qu\n", 683 (long long)uio->uio_offset,(long long)uio->uio_resid)); 684 685 if (!error && ap->a_ncookies != NULL) { 686 struct dirent* dpStart; 687 struct dirent* dp; 688 #if defined(__FreeBSD__) 689 u_long *cookies; 690 u_long *cookiep; 691 #else /* defined(__NetBSD__) */ 692 off_t *cookies; 693 off_t *cookiep; 694 #endif 695 696 dprintf(("ntfs_readdir: %d cookies\n",ncookies)); 697 dpStart = (struct dirent *) 698 ((char *)uio->uio_iov->iov_base - 699 (uio->uio_offset - off)); 700 #if defined(__FreeBSD__) 701 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 702 M_TEMP, M_WAITOK); 703 #else /* defined(__NetBSD__) */ 704 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 705 #endif 706 for (dp = dpStart, cookiep = cookies, i=0; 707 i < ncookies; 708 dp = (struct dirent *)((char *) dp + dp->d_reclen), i++) { 709 off += dp->d_reclen; 710 *cookiep++ = (u_int) off; 711 } 712 *ap->a_ncookies = ncookies; 713 *ap->a_cookies = cookies; 714 } 715 /* 716 if (ap->a_eofflag) 717 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 718 */ 719 out: 720 FREE(cde, M_TEMP); 721 return (error); 722 } 723 724 int 725 ntfs_lookup(void *v) 726 { 727 struct vop_lookup_args /* { 728 struct vnode *a_dvp; 729 struct vnode **a_vpp; 730 struct componentname *a_cnp; 731 } */ *ap = v; 732 struct vnode *dvp = ap->a_dvp; 733 struct ntnode *dip = VTONT(dvp); 734 struct ntfsmount *ntmp = dip->i_mp; 735 struct componentname *cnp = ap->a_cnp; 736 kauth_cred_t cred = cnp->cn_cred; 737 int error; 738 739 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %llu\n", 740 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 741 (unsigned long long)dip->i_number)); 742 743 error = VOP_ACCESS(dvp, VEXEC, cred); 744 if(error) 745 return (error); 746 747 if ((cnp->cn_flags & ISLASTCN) && 748 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 749 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 750 return (EROFS); 751 752 #ifdef __NetBSD__ 753 /* 754 * We now have a segment name to search for, and a directory 755 * to search. 756 * 757 * Before tediously performing a linear scan of the directory, 758 * check the name cache to see if the directory/name pair 759 * we are looking for is known already. 760 */ 761 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 762 return (error); 763 #endif 764 765 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 766 dprintf(("ntfs_lookup: faking . directory in %llu\n", 767 (unsigned long long)dip->i_number)); 768 769 VREF(dvp); 770 *ap->a_vpp = dvp; 771 error = 0; 772 } else if (cnp->cn_flags & ISDOTDOT) { 773 struct ntvattr *vap; 774 775 dprintf(("ntfs_lookup: faking .. directory in %llu\n", 776 (unsigned long long)dip->i_number)); 777 778 VOP_UNLOCK(dvp, 0); 779 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 780 if (error) { 781 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 782 return (error); 783 } 784 785 dprintf(("ntfs_lookup: parentdir: %d\n", 786 vap->va_a_name->n_pnumber)); 787 error = VFS_VGET(ntmp->ntm_mountp, 788 vap->va_a_name->n_pnumber,ap->a_vpp); 789 ntfs_ntvattrrele(vap); 790 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 791 if (error) { 792 return (error); 793 } 794 } else { 795 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 796 if (error) { 797 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 798 return (error); 799 } 800 801 dprintf(("ntfs_lookup: found ino: %llu\n", 802 (unsigned long long)VTONT(*ap->a_vpp)->i_number)); 803 } 804 805 if (cnp->cn_flags & MAKEENTRY) 806 cache_enter(dvp, *ap->a_vpp, cnp); 807 808 return (error); 809 } 810 811 /* 812 * Flush the blocks of a file to disk. 813 * 814 * This function is worthless for vnodes that represent directories. Maybe we 815 * could just do a sync if they try an fsync on a directory file. 816 */ 817 static int 818 ntfs_fsync(void *v) 819 { 820 struct vop_fsync_args /* { 821 struct vnode *a_vp; 822 kauth_cred_t a_cred; 823 int a_flags; 824 off_t offlo; 825 off_t offhi; 826 } */ *ap = v; 827 struct vnode *vp = ap->a_vp; 828 int wait; 829 830 if (ap->a_flags & FSYNC_CACHE) { 831 return EOPNOTSUPP; 832 } 833 834 wait = (ap->a_flags & FSYNC_WAIT) != 0; 835 vflushbuf(vp, wait); 836 837 return 0; 838 } 839 840 /* 841 * Return POSIX pathconf information applicable to NTFS filesystem 842 */ 843 static int 844 ntfs_pathconf(void *v) 845 { 846 struct vop_pathconf_args /* { 847 struct vnode *a_vp; 848 int a_name; 849 register_t *a_retval; 850 } */ *ap = v; 851 852 switch (ap->a_name) { 853 case _PC_LINK_MAX: 854 *ap->a_retval = 1; 855 return (0); 856 case _PC_NAME_MAX: 857 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax; 858 return (0); 859 case _PC_PATH_MAX: 860 *ap->a_retval = PATH_MAX; 861 return (0); 862 case _PC_CHOWN_RESTRICTED: 863 *ap->a_retval = 1; 864 return (0); 865 case _PC_NO_TRUNC: 866 *ap->a_retval = 0; 867 return (0); 868 case _PC_SYNC_IO: 869 *ap->a_retval = 1; 870 return (0); 871 case _PC_FILESIZEBITS: 872 *ap->a_retval = 64; 873 return (0); 874 default: 875 return (EINVAL); 876 } 877 /* NOTREACHED */ 878 } 879 880 /* 881 * Global vfs data structures 882 */ 883 vop_t **ntfs_vnodeop_p; 884 #if defined(__FreeBSD__) 885 static 886 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 887 { &vop_default_desc, (vop_t *)ntfs_bypass }, 888 889 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 890 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 891 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 892 { &vop_print_desc, (vop_t *)ntfs_print }, 893 { &vop_pathconf_desc, ntfs_pathconf }, 894 895 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 896 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 897 { &vop_lock_desc, (vop_t *)vop_stdlock }, 898 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 899 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 900 901 { &vop_access_desc, (vop_t *)ntfs_access }, 902 { &vop_close_desc, (vop_t *)ntfs_close }, 903 { &vop_open_desc, (vop_t *)ntfs_open }, 904 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 905 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 906 907 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 908 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 909 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 910 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 911 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 912 { &vop_read_desc, (vop_t *)ntfs_read }, 913 { &vop_write_desc, (vop_t *)ntfs_write }, 914 915 { NULL, NULL } 916 }; 917 918 static 919 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 920 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 921 922 VNODEOP_SET(ntfs_vnodeop_opv_desc); 923 924 #else /* !FreeBSD */ 925 926 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 927 { &vop_default_desc, (vop_t *) ntfs_bypass }, 928 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 929 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 930 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 931 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 932 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 933 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 934 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 935 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 936 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 937 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 938 { &vop_lease_desc, genfs_lease_check }, /* lease */ 939 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 940 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 941 { &vop_poll_desc, genfs_poll }, /* poll */ 942 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 943 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 944 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 945 { &vop_fsync_desc, (vop_t *) ntfs_fsync }, /* fsync */ 946 { &vop_seek_desc, genfs_seek }, /* seek */ 947 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 948 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 949 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 950 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 951 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 952 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 953 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 954 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 955 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 956 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 957 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 958 { &vop_lock_desc, genfs_lock }, /* lock */ 959 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 960 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 961 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 962 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 963 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 964 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 965 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 966 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 967 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 968 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 969 { NULL, NULL } 970 }; 971 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 972 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 973 974 #endif 975
Indexes created Thu Sep 25 08:09:54 GMT 2025