1 /* $NetBSD: ntfs_vnops.c,v 1.14 2003/08/07 16:31:39 agc 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 1.14 2003/08/07 16:31:39 agc 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 53 #if !defined(__NetBSD__) 54 #include <vm/vm.h> 55 #endif 56 57 #if defined(__FreeBSD__) 58 #include <vm/vnode_pager.h> 59 #endif 60 61 #include <sys/sysctl.h> 62 63 64 /*#define NTFS_DEBUG 1*/ 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 __P((struct vop_generic_args *ap)); 74 static int ntfs_read __P((struct vop_read_args *)); 75 static int ntfs_write __P((struct vop_write_args *ap)); 76 static int ntfs_getattr __P((struct vop_getattr_args *ap)); 77 static int ntfs_inactive __P((struct vop_inactive_args *ap)); 78 static int ntfs_print __P((struct vop_print_args *ap)); 79 static int ntfs_reclaim __P((struct vop_reclaim_args *ap)); 80 static int ntfs_strategy __P((struct vop_strategy_args *ap)); 81 static int ntfs_access __P((struct vop_access_args *ap)); 82 static int ntfs_open __P((struct vop_open_args *ap)); 83 static int ntfs_close __P((struct vop_close_args *ap)); 84 static int ntfs_readdir __P((struct vop_readdir_args *ap)); 85 static int ntfs_lookup __P((struct vop_lookup_args *ap)); 86 static int ntfs_bmap __P((struct vop_bmap_args *ap)); 87 #if defined(__FreeBSD__) 88 static int ntfs_getpages __P((struct vop_getpages_args *ap)); 89 static int ntfs_putpages __P((struct vop_putpages_args *)); 90 static int ntfs_fsync __P((struct vop_fsync_args *ap)); 91 #endif 92 static int ntfs_pathconf __P((void *)); 93 94 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 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(ap) 119 struct vop_bmap_args /* { 120 struct vnode *a_vp; 121 daddr_t a_bn; 122 struct vnode **a_vpp; 123 daddr_t *a_bnp; 124 int *a_runp; 125 int *a_runb; 126 } */ *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__) 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 /* { 145 struct vnode *a_vp; 146 struct uio *a_uio; 147 int a_ioflag; 148 struct ucred *a_cred; 149 } */ *ap; 150 { 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: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 160 161 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 162 163 /* don't allow reading after end of file */ 164 if (uio->uio_offset > fp->f_size) 165 toread = 0; 166 else 167 toread = min( uio->uio_resid, fp->f_size - uio->uio_offset ); 168 169 dprintf((", toread: %d\n",(u_int32_t)toread)); 170 171 if (toread == 0) 172 return (0); 173 174 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 175 fp->f_attrname, uio->uio_offset, toread, NULL, uio); 176 if (error) { 177 printf("ntfs_read: ntfs_readattr failed: %d\n",error); 178 return (error); 179 } 180 181 return (0); 182 } 183 184 static int 185 ntfs_bypass(ap) 186 struct vop_generic_args /* { 187 struct vnodeop_desc *a_desc; 188 <other random data follows, presumably> 189 } */ *ap; 190 { 191 int error = ENOTTY; 192 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 193 return (error); 194 } 195 196 197 static int 198 ntfs_getattr(ap) 199 struct vop_getattr_args /* { 200 struct vnode *a_vp; 201 struct vattr *a_vap; 202 struct ucred *a_cred; 203 struct proc *a_p; 204 } */ *ap; 205 { 206 struct vnode *vp = ap->a_vp; 207 struct fnode *fp = VTOF(vp); 208 struct ntnode *ip = FTONT(fp); 209 struct vattr *vap = ap->a_vap; 210 211 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 212 213 #if defined(__FreeBSD__) 214 vap->va_fsid = dev2udev(ip->i_dev); 215 #else /* NetBSD */ 216 vap->va_fsid = ip->i_dev; 217 #endif 218 vap->va_fileid = ip->i_number; 219 vap->va_mode = ip->i_mp->ntm_mode; 220 vap->va_nlink = ip->i_nlink; 221 vap->va_uid = ip->i_mp->ntm_uid; 222 vap->va_gid = ip->i_mp->ntm_gid; 223 vap->va_rdev = 0; /* XXX UNODEV ? */ 224 vap->va_size = fp->f_size; 225 vap->va_bytes = fp->f_allocated; 226 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 227 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 228 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 229 vap->va_flags = ip->i_flag; 230 vap->va_gen = 0; 231 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 232 vap->va_type = vp->v_type; 233 vap->va_filerev = 0; 234 return (0); 235 } 236 237 238 /* 239 * Last reference to an ntnode. If necessary, write or delete it. 240 */ 241 int 242 ntfs_inactive(ap) 243 struct vop_inactive_args /* { 244 struct vnode *a_vp; 245 } */ *ap; 246 { 247 struct vnode *vp = ap->a_vp; 248 #ifdef NTFS_DEBUG 249 struct ntnode *ip = VTONT(vp); 250 #endif 251 252 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 253 254 if (ntfs_prtactive && vp->v_usecount != 0) 255 vprint("ntfs_inactive: pushing active", vp); 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(ap) 270 struct vop_reclaim_args /* { 271 struct vnode *a_vp; 272 } */ *ap; 273 { 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: %d\n", vp, ip->i_number)); 280 281 if (ntfs_prtactive && vp->v_usecount != 0) 282 vprint("ntfs_reclaim: pushing active", vp); 283 284 if ((error = ntfs_ntget(ip)) != 0) 285 return (error); 286 287 /* Purge old data structures associated with the inode. */ 288 cache_purge(vp); 289 if (ip->i_devvp) { 290 vrele(ip->i_devvp); 291 ip->i_devvp = NULL; 292 } 293 294 ntfs_frele(fp); 295 ntfs_ntput(ip); 296 vp->v_data = NULL; 297 298 return (0); 299 } 300 301 static int 302 ntfs_print(ap) 303 struct vop_print_args /* { 304 struct vnode *a_vp; 305 } */ *ap; 306 { 307 struct ntnode *ip = VTONT(ap->a_vp); 308 309 printf("tag VT_NTFS, ino %u, flag %#x, usecount %d, nlink %ld\n", 310 ip->i_number, ip->i_flag, ip->i_usecount, ip->i_nlink); 311 printf(" "); 312 lockmgr_printinfo(ap->a_vp->v_vnlock); 313 printf("\n"); 314 return (0); 315 } 316 317 /* 318 * Calculate the logical to physical mapping if not done already, 319 * then call the device strategy routine. 320 */ 321 int 322 ntfs_strategy(ap) 323 struct vop_strategy_args /* { 324 struct buf *a_bp; 325 } */ *ap; 326 { 327 struct buf *bp = ap->a_bp; 328 struct vnode *vp = bp->b_vp; 329 struct fnode *fp = VTOF(vp); 330 struct ntnode *ip = FTONT(fp); 331 struct ntfsmount *ntmp = ip->i_mp; 332 int error; 333 334 #ifdef __FreeBSD__ 335 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 336 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 337 (u_int32_t)bp->b_lblkno)); 338 #else 339 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 340 (u_int32_t)bp->b_blkno, 341 (u_int32_t)bp->b_lblkno)); 342 #endif 343 344 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 345 (u_int32_t)bp->b_bcount,bp->b_flags)); 346 347 if (bp->b_flags & B_READ) { 348 u_int32_t toread; 349 350 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 351 clrbuf(bp); 352 error = 0; 353 } else { 354 toread = min(bp->b_bcount, 355 fp->f_size-ntfs_cntob(bp->b_blkno)); 356 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 357 toread,(u_int32_t)fp->f_size)); 358 359 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 360 fp->f_attrname, ntfs_cntob(bp->b_blkno), 361 toread, bp->b_data, NULL); 362 363 if (error) { 364 printf("ntfs_strategy: ntfs_readattr failed\n"); 365 bp->b_error = error; 366 bp->b_flags |= B_ERROR; 367 } 368 369 bzero(bp->b_data + toread, bp->b_bcount - toread); 370 } 371 } else { 372 size_t tmp; 373 u_int32_t towrite; 374 375 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 376 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 377 bp->b_error = error = EFBIG; 378 bp->b_flags |= B_ERROR; 379 } else { 380 towrite = min(bp->b_bcount, 381 fp->f_size-ntfs_cntob(bp->b_blkno)); 382 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 383 towrite,(u_int32_t)fp->f_size)); 384 385 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 386 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 387 bp->b_data, &tmp, NULL); 388 389 if (error) { 390 printf("ntfs_strategy: ntfs_writeattr fail\n"); 391 bp->b_error = error; 392 bp->b_flags |= B_ERROR; 393 } 394 } 395 } 396 biodone(bp); 397 return (error); 398 } 399 400 static int 401 ntfs_write(ap) 402 struct vop_write_args /* { 403 struct vnode *a_vp; 404 struct uio *a_uio; 405 int a_ioflag; 406 struct ucred *a_cred; 407 } */ *ap; 408 { 409 struct vnode *vp = ap->a_vp; 410 struct fnode *fp = VTOF(vp); 411 struct ntnode *ip = FTONT(fp); 412 struct uio *uio = ap->a_uio; 413 struct ntfsmount *ntmp = ip->i_mp; 414 u_int64_t towrite; 415 size_t written; 416 int error; 417 418 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)); 419 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 420 421 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 422 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 423 return (EFBIG); 424 } 425 426 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 427 428 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 429 430 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 431 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 432 #ifdef NTFS_DEBUG 433 if (error) 434 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 435 #endif 436 437 return (error); 438 } 439 440 int 441 ntfs_access(ap) 442 struct vop_access_args /* { 443 struct vnode *a_vp; 444 int a_mode; 445 struct ucred *a_cred; 446 struct proc *a_p; 447 } */ *ap; 448 { 449 struct vnode *vp = ap->a_vp; 450 struct ntnode *ip = VTONT(vp); 451 struct ucred *cred = ap->a_cred; 452 mode_t mask, mode = ap->a_mode; 453 gid_t *gp; 454 int i; 455 456 dprintf(("ntfs_access: %d\n",ip->i_number)); 457 458 /* 459 * Disallow write attempts on read-only file systems; 460 * unless the file is a socket, fifo, or a block or 461 * character device resident on the file system. 462 */ 463 if (mode & VWRITE) { 464 switch ((int)vp->v_type) { 465 case VDIR: 466 case VLNK: 467 case VREG: 468 if (vp->v_mount->mnt_flag & MNT_RDONLY) 469 return (EROFS); 470 break; 471 } 472 } 473 474 /* Otherwise, user id 0 always gets access. */ 475 if (cred->cr_uid == 0) 476 return (0); 477 478 mask = 0; 479 480 /* Otherwise, check the owner. */ 481 if (cred->cr_uid == ip->i_mp->ntm_uid) { 482 if (mode & VEXEC) 483 mask |= S_IXUSR; 484 if (mode & VREAD) 485 mask |= S_IRUSR; 486 if (mode & VWRITE) 487 mask |= S_IWUSR; 488 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 489 } 490 491 /* Otherwise, check the groups. */ 492 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 493 if (ip->i_mp->ntm_gid == *gp) { 494 if (mode & VEXEC) 495 mask |= S_IXGRP; 496 if (mode & VREAD) 497 mask |= S_IRGRP; 498 if (mode & VWRITE) 499 mask |= S_IWGRP; 500 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 501 } 502 503 /* Otherwise, check everyone else. */ 504 if (mode & VEXEC) 505 mask |= S_IXOTH; 506 if (mode & VREAD) 507 mask |= S_IROTH; 508 if (mode & VWRITE) 509 mask |= S_IWOTH; 510 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 511 } 512 513 /* 514 * Open called. 515 * 516 * Nothing to do. 517 */ 518 /* ARGSUSED */ 519 static int 520 ntfs_open(ap) 521 struct vop_open_args /* { 522 struct vnode *a_vp; 523 int a_mode; 524 struct ucred *a_cred; 525 struct proc *a_p; 526 } */ *ap; 527 { 528 #if NTFS_DEBUG 529 struct vnode *vp = ap->a_vp; 530 struct ntnode *ip = VTONT(vp); 531 532 printf("ntfs_open: %d\n",ip->i_number); 533 #endif 534 535 /* 536 * Files marked append-only must be opened for appending. 537 */ 538 539 return (0); 540 } 541 542 /* 543 * Close called. 544 * 545 * Update the times on the inode. 546 */ 547 /* ARGSUSED */ 548 static int 549 ntfs_close(ap) 550 struct vop_close_args /* { 551 struct vnode *a_vp; 552 int a_fflag; 553 struct ucred *a_cred; 554 struct proc *a_p; 555 } */ *ap; 556 { 557 #if NTFS_DEBUG 558 struct vnode *vp = ap->a_vp; 559 struct ntnode *ip = VTONT(vp); 560 561 printf("ntfs_close: %d\n",ip->i_number); 562 #endif 563 564 return (0); 565 } 566 567 int 568 ntfs_readdir(ap) 569 struct vop_readdir_args /* { 570 struct vnode *a_vp; 571 struct uio *a_uio; 572 struct ucred *a_cred; 573 int *a_ncookies; 574 u_int **cookies; 575 } */ *ap; 576 { 577 struct vnode *vp = ap->a_vp; 578 struct fnode *fp = VTOF(vp); 579 struct ntnode *ip = FTONT(fp); 580 struct uio *uio = ap->a_uio; 581 struct ntfsmount *ntmp = ip->i_mp; 582 int i, error = 0; 583 u_int32_t faked = 0, num; 584 int ncookies = 0; 585 struct dirent *cde; 586 off_t off; 587 588 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 589 590 off = uio->uio_offset; 591 592 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK); 593 594 /* Simulate . in every dir except ROOT */ 595 if (ip->i_number != NTFS_ROOTINO 596 && uio->uio_offset < sizeof(struct dirent)) { 597 cde->d_fileno = ip->i_number; 598 cde->d_reclen = sizeof(struct dirent); 599 cde->d_type = DT_DIR; 600 cde->d_namlen = 1; 601 strncpy(cde->d_name, ".", 2); 602 error = uiomove((void *)cde, sizeof(struct dirent), uio); 603 if (error) 604 goto out; 605 606 ncookies++; 607 } 608 609 /* Simulate .. in every dir including ROOT */ 610 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 611 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 612 cde->d_reclen = sizeof(struct dirent); 613 cde->d_type = DT_DIR; 614 cde->d_namlen = 2; 615 strncpy(cde->d_name, "..", 3); 616 617 error = uiomove((void *) cde, sizeof(struct dirent), uio); 618 if (error) 619 goto out; 620 621 ncookies++; 622 } 623 624 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 625 num = uio->uio_offset / sizeof(struct dirent) - faked; 626 627 while (uio->uio_resid >= sizeof(struct dirent)) { 628 struct attr_indexentry *iep; 629 char *fname; 630 size_t remains; 631 int sz; 632 633 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 634 if (error) 635 goto out; 636 637 if (NULL == iep) 638 break; 639 640 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 641 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 642 { 643 if(!ntfs_isnamepermitted(ntmp,iep)) 644 continue; 645 646 remains = sizeof(cde->d_name) - 1; 647 fname = cde->d_name; 648 for(i=0; i<iep->ie_fnamelen; i++) { 649 sz = (*ntmp->ntm_wput)(fname, remains, 650 iep->ie_fname[i]); 651 fname += sz; 652 remains -= sz; 653 } 654 *fname = '\0'; 655 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 656 num, cde->d_name, iep->ie_fnametype, 657 iep->ie_flag)); 658 cde->d_namlen = fname - (char *) cde->d_name; 659 cde->d_fileno = iep->ie_number; 660 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 661 cde->d_reclen = sizeof(struct dirent); 662 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 663 664 error = uiomove((void *)cde, sizeof(struct dirent), uio); 665 if (error) 666 goto out; 667 668 ncookies++; 669 num++; 670 } 671 } 672 673 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 674 ncookies,(u_int)(uio->uio_offset - off))); 675 dprintf(("ntfs_readdir: off: %d resid: %d\n", 676 (u_int32_t)uio->uio_offset,uio->uio_resid)); 677 678 if (!error && ap->a_ncookies != NULL) { 679 struct dirent* dpStart; 680 struct dirent* dp; 681 #if defined(__FreeBSD__) 682 u_long *cookies; 683 u_long *cookiep; 684 #else /* defined(__NetBSD__) */ 685 off_t *cookies; 686 off_t *cookiep; 687 #endif 688 689 printf("ntfs_readdir: %d cookies\n",ncookies); 690 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 691 panic("ntfs_readdir: unexpected uio from NFS server"); 692 dpStart = (struct dirent *) 693 ((caddr_t)uio->uio_iov->iov_base - 694 (uio->uio_offset - off)); 695 #if defined(__FreeBSD__) 696 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 697 M_TEMP, M_WAITOK); 698 #else /* defined(__NetBSD__) */ 699 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 700 #endif 701 for (dp = dpStart, cookiep = cookies, i=0; 702 i < ncookies; 703 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 704 off += dp->d_reclen; 705 *cookiep++ = (u_int) off; 706 } 707 *ap->a_ncookies = ncookies; 708 *ap->a_cookies = cookies; 709 } 710 /* 711 if (ap->a_eofflag) 712 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 713 */ 714 out: 715 FREE(cde, M_TEMP); 716 return (error); 717 } 718 719 int 720 ntfs_lookup(ap) 721 struct vop_lookup_args /* { 722 struct vnode *a_dvp; 723 struct vnode **a_vpp; 724 struct componentname *a_cnp; 725 } */ *ap; 726 { 727 struct vnode *dvp = ap->a_dvp; 728 struct ntnode *dip = VTONT(dvp); 729 struct ntfsmount *ntmp = dip->i_mp; 730 struct componentname *cnp = ap->a_cnp; 731 struct ucred *cred = cnp->cn_cred; 732 int error; 733 int lockparent = cnp->cn_flags & LOCKPARENT; 734 #if NTFS_DEBUG 735 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); 736 #endif 737 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 738 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 739 dip->i_number, lockparent, wantparent)); 740 741 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc); 742 if(error) 743 return (error); 744 745 if ((cnp->cn_flags & ISLASTCN) && 746 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 747 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 748 return (EROFS); 749 750 #ifdef __NetBSD__ 751 /* 752 * We now have a segment name to search for, and a directory 753 * to search. 754 * 755 * Before tediously performing a linear scan of the directory, 756 * check the name cache to see if the directory/name pair 757 * we are looking for is known already. 758 */ 759 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 760 return (error); 761 #endif 762 763 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 764 dprintf(("ntfs_lookup: faking . directory in %d\n", 765 dip->i_number)); 766 767 VREF(dvp); 768 *ap->a_vpp = dvp; 769 error = 0; 770 } else if (cnp->cn_flags & ISDOTDOT) { 771 struct ntvattr *vap; 772 773 dprintf(("ntfs_lookup: faking .. directory in %d\n", 774 dip->i_number)); 775 776 VOP_UNLOCK(dvp, 0); 777 cnp->cn_flags |= PDIRUNLOCK; 778 779 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 780 if(error) 781 return (error); 782 783 dprintf(("ntfs_lookup: parentdir: %d\n", 784 vap->va_a_name->n_pnumber)); 785 error = VFS_VGET(ntmp->ntm_mountp, 786 vap->va_a_name->n_pnumber,ap->a_vpp); 787 ntfs_ntvattrrele(vap); 788 if (error) { 789 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 790 cnp->cn_flags &= ~PDIRUNLOCK; 791 return (error); 792 } 793 794 if (lockparent && (cnp->cn_flags & ISLASTCN)) { 795 error = vn_lock(dvp, LK_EXCLUSIVE); 796 if (error) { 797 vput( *(ap->a_vpp) ); 798 return (error); 799 } 800 cnp->cn_flags &= ~PDIRUNLOCK; 801 } 802 } else { 803 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 804 if (error) { 805 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 806 return (error); 807 } 808 809 dprintf(("ntfs_lookup: found ino: %d\n", 810 VTONT(*ap->a_vpp)->i_number)); 811 812 if(!lockparent || (cnp->cn_flags & ISLASTCN) == 0) { 813 VOP_UNLOCK(dvp, 0); 814 cnp->cn_flags |= PDIRUNLOCK; 815 } 816 } 817 818 if (cnp->cn_flags & MAKEENTRY) 819 cache_enter(dvp, *ap->a_vpp, cnp); 820 821 return (error); 822 } 823 824 #if defined(__FreeBSD__) 825 /* 826 * Flush the blocks of a file to disk. 827 * 828 * This function is worthless for vnodes that represent directories. Maybe we 829 * could just do a sync if they try an fsync on a directory file. 830 */ 831 static int 832 ntfs_fsync(ap) 833 struct vop_fsync_args /* { 834 struct vnode *a_vp; 835 struct ucred *a_cred; 836 int a_waitfor; 837 off_t offlo; 838 off_t offhi; 839 struct proc *a_p; 840 } */ *ap; 841 { 842 return (0); 843 } 844 #endif 845 846 /* 847 * Return POSIX pathconf information applicable to NTFS filesystem 848 */ 849 static int 850 ntfs_pathconf(v) 851 void *v; 852 { 853 struct vop_pathconf_args /* { 854 struct vnode *a_vp; 855 int a_name; 856 register_t *a_retval; 857 } */ *ap = v; 858 859 switch (ap->a_name) { 860 case _PC_LINK_MAX: 861 *ap->a_retval = 1; 862 return (0); 863 case _PC_NAME_MAX: 864 *ap->a_retval = NTFS_MAXFILENAME; 865 return (0); 866 case _PC_PATH_MAX: 867 *ap->a_retval = PATH_MAX; 868 return (0); 869 case _PC_CHOWN_RESTRICTED: 870 *ap->a_retval = 1; 871 return (0); 872 case _PC_NO_TRUNC: 873 *ap->a_retval = 0; 874 return (0); 875 case _PC_SYNC_IO: 876 *ap->a_retval = 1; 877 return (0); 878 case _PC_FILESIZEBITS: 879 *ap->a_retval = 64; 880 return (0); 881 default: 882 return (EINVAL); 883 } 884 /* NOTREACHED */ 885 } 886 887 /* 888 * Global vfs data structures 889 */ 890 vop_t **ntfs_vnodeop_p; 891 #if defined(__FreeBSD__) 892 static 893 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 894 { &vop_default_desc, (vop_t *)ntfs_bypass }, 895 896 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 897 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 898 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 899 { &vop_print_desc, (vop_t *)ntfs_print }, 900 { &vop_pathconf_desc, ntfs_pathconf }, 901 902 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 903 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 904 { &vop_lock_desc, (vop_t *)vop_stdlock }, 905 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 906 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 907 908 { &vop_access_desc, (vop_t *)ntfs_access }, 909 { &vop_close_desc, (vop_t *)ntfs_close }, 910 { &vop_open_desc, (vop_t *)ntfs_open }, 911 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 912 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 913 914 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 915 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 916 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 917 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 918 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 919 { &vop_read_desc, (vop_t *)ntfs_read }, 920 { &vop_write_desc, (vop_t *)ntfs_write }, 921 922 { NULL, NULL } 923 }; 924 925 static 926 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 927 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 928 929 VNODEOP_SET(ntfs_vnodeop_opv_desc); 930 931 #else /* !FreeBSD */ 932 933 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 934 { &vop_default_desc, (vop_t *) ntfs_bypass }, 935 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 936 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 937 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 938 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 939 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 940 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 941 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 942 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 943 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 944 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 945 { &vop_lease_desc, genfs_lease_check }, /* lease */ 946 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 947 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 948 { &vop_poll_desc, genfs_poll }, /* poll */ 949 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 950 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 951 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 952 { &vop_fsync_desc, genfs_fsync }, /* fsync */ 953 { &vop_seek_desc, genfs_seek }, /* seek */ 954 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 955 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 956 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 957 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 958 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 959 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 960 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 961 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 962 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 963 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 964 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 965 { &vop_lock_desc, genfs_lock }, /* lock */ 966 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 967 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 968 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 969 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 970 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 971 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 972 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 973 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */ 974 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */ 975 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */ 976 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */ 977 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */ 978 { &vop_update_desc, genfs_eopnotsupp }, /* update */ 979 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 980 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 981 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 982 { NULL, NULL } 983 }; 984 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 985 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 986 987 #endif 988