1 /* $NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp 39 * 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/time.h> 49 #include <sys/stat.h> 50 #include <sys/vnode.h> 51 #include <sys/mount.h> 52 #include <sys/namei.h> 53 #include <sys/malloc.h> 54 #include <sys/buf.h> 55 #include <sys/dirent.h> 56 57 #if !defined(__NetBSD__) 58 #include <vm/vm.h> 59 #endif 60 61 #if defined(__FreeBSD__) 62 #include <vm/vnode_pager.h> 63 #endif 64 65 #include <sys/sysctl.h> 66 67 68 /*#define NTFS_DEBUG 1*/ 69 #include <fs/ntfs/ntfs.h> 70 #include <fs/ntfs/ntfs_inode.h> 71 #include <fs/ntfs/ntfs_subr.h> 72 #include <miscfs/specfs/specdev.h> 73 #include <miscfs/genfs/genfs.h> 74 75 #include <sys/unistd.h> /* for pathconf(2) constants */ 76 77 static int ntfs_bypass __P((struct vop_generic_args *ap)); 78 static int ntfs_read __P((struct vop_read_args *)); 79 static int ntfs_write __P((struct vop_write_args *ap)); 80 static int ntfs_getattr __P((struct vop_getattr_args *ap)); 81 static int ntfs_inactive __P((struct vop_inactive_args *ap)); 82 static int ntfs_print __P((struct vop_print_args *ap)); 83 static int ntfs_reclaim __P((struct vop_reclaim_args *ap)); 84 static int ntfs_strategy __P((struct vop_strategy_args *ap)); 85 static int ntfs_access __P((struct vop_access_args *ap)); 86 static int ntfs_open __P((struct vop_open_args *ap)); 87 static int ntfs_close __P((struct vop_close_args *ap)); 88 static int ntfs_readdir __P((struct vop_readdir_args *ap)); 89 static int ntfs_lookup __P((struct vop_lookup_args *ap)); 90 static int ntfs_bmap __P((struct vop_bmap_args *ap)); 91 #if defined(__FreeBSD__) 92 static int ntfs_getpages __P((struct vop_getpages_args *ap)); 93 static int ntfs_putpages __P((struct vop_putpages_args *)); 94 static int ntfs_fsync __P((struct vop_fsync_args *ap)); 95 #endif 96 static int ntfs_pathconf __P((void *)); 97 98 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 99 100 #if defined(__FreeBSD__) 101 int 102 ntfs_getpages(ap) 103 struct vop_getpages_args *ap; 104 { 105 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 106 ap->a_reqpage); 107 } 108 109 int 110 ntfs_putpages(ap) 111 struct vop_putpages_args *ap; 112 { 113 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 114 ap->a_sync, ap->a_rtvals); 115 } 116 #endif 117 118 /* 119 * This is a noop, simply returning what one has been given. 120 */ 121 int 122 ntfs_bmap(ap) 123 struct vop_bmap_args /* { 124 struct vnode *a_vp; 125 daddr_t a_bn; 126 struct vnode **a_vpp; 127 daddr_t *a_bnp; 128 int *a_runp; 129 int *a_runb; 130 } */ *ap; 131 { 132 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 133 if (ap->a_vpp != NULL) 134 *ap->a_vpp = ap->a_vp; 135 if (ap->a_bnp != NULL) 136 *ap->a_bnp = ap->a_bn; 137 if (ap->a_runp != NULL) 138 *ap->a_runp = 0; 139 #if !defined(__NetBSD__) 140 if (ap->a_runb != NULL) 141 *ap->a_runb = 0; 142 #endif 143 return (0); 144 } 145 146 static int 147 ntfs_read(ap) 148 struct vop_read_args /* { 149 struct vnode *a_vp; 150 struct uio *a_uio; 151 int a_ioflag; 152 struct ucred *a_cred; 153 } */ *ap; 154 { 155 struct vnode *vp = ap->a_vp; 156 struct fnode *fp = VTOF(vp); 157 struct ntnode *ip = FTONT(fp); 158 struct uio *uio = ap->a_uio; 159 struct ntfsmount *ntmp = ip->i_mp; 160 u_int64_t toread; 161 int error; 162 163 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)); 164 165 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 166 167 /* don't allow reading after end of file */ 168 if (uio->uio_offset > fp->f_size) 169 toread = 0; 170 else 171 toread = min( uio->uio_resid, fp->f_size - uio->uio_offset ); 172 173 dprintf((", toread: %d\n",(u_int32_t)toread)); 174 175 if (toread == 0) 176 return (0); 177 178 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 179 fp->f_attrname, uio->uio_offset, toread, NULL, uio); 180 if (error) { 181 printf("ntfs_read: ntfs_readattr failed: %d\n",error); 182 return (error); 183 } 184 185 return (0); 186 } 187 188 static int 189 ntfs_bypass(ap) 190 struct vop_generic_args /* { 191 struct vnodeop_desc *a_desc; 192 <other random data follows, presumably> 193 } */ *ap; 194 { 195 int error = ENOTTY; 196 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 197 return (error); 198 } 199 200 201 static int 202 ntfs_getattr(ap) 203 struct vop_getattr_args /* { 204 struct vnode *a_vp; 205 struct vattr *a_vap; 206 struct ucred *a_cred; 207 struct proc *a_p; 208 } */ *ap; 209 { 210 struct vnode *vp = ap->a_vp; 211 struct fnode *fp = VTOF(vp); 212 struct ntnode *ip = FTONT(fp); 213 struct vattr *vap = ap->a_vap; 214 215 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 216 217 #if defined(__FreeBSD__) 218 vap->va_fsid = dev2udev(ip->i_dev); 219 #else /* NetBSD */ 220 vap->va_fsid = ip->i_dev; 221 #endif 222 vap->va_fileid = ip->i_number; 223 vap->va_mode = ip->i_mp->ntm_mode; 224 vap->va_nlink = ip->i_nlink; 225 vap->va_uid = ip->i_mp->ntm_uid; 226 vap->va_gid = ip->i_mp->ntm_gid; 227 vap->va_rdev = 0; /* XXX UNODEV ? */ 228 vap->va_size = fp->f_size; 229 vap->va_bytes = fp->f_allocated; 230 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 231 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 232 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 233 vap->va_flags = ip->i_flag; 234 vap->va_gen = 0; 235 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 236 vap->va_type = vp->v_type; 237 vap->va_filerev = 0; 238 return (0); 239 } 240 241 242 /* 243 * Last reference to an ntnode. If necessary, write or delete it. 244 */ 245 int 246 ntfs_inactive(ap) 247 struct vop_inactive_args /* { 248 struct vnode *a_vp; 249 } */ *ap; 250 { 251 struct vnode *vp = ap->a_vp; 252 #ifdef NTFS_DEBUG 253 struct ntnode *ip = VTONT(vp); 254 #endif 255 256 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 257 258 if (ntfs_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(ap) 274 struct vop_reclaim_args /* { 275 struct vnode *a_vp; 276 } */ *ap; 277 { 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: %d\n", vp, ip->i_number)); 284 285 if (ntfs_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 ntfs_frele(fp); 299 ntfs_ntput(ip); 300 vp->v_data = NULL; 301 302 return (0); 303 } 304 305 static int 306 ntfs_print(ap) 307 struct vop_print_args /* { 308 struct vnode *a_vp; 309 } */ *ap; 310 { 311 struct ntnode *ip = VTONT(ap->a_vp); 312 313 printf("tag VT_NTFS, ino %u, flag %#x, usecount %d, nlink %ld\n", 314 ip->i_number, ip->i_flag, ip->i_usecount, ip->i_nlink); 315 printf(" "); 316 lockmgr_printinfo(ap->a_vp->v_vnlock); 317 printf("\n"); 318 return (0); 319 } 320 321 /* 322 * Calculate the logical to physical mapping if not done already, 323 * then call the device strategy routine. 324 */ 325 int 326 ntfs_strategy(ap) 327 struct vop_strategy_args /* { 328 struct buf *a_bp; 329 } */ *ap; 330 { 331 struct buf *bp = ap->a_bp; 332 struct vnode *vp = bp->b_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: %d flags: 0x%lx\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 bp->b_flags |= B_ERROR; 371 } 372 373 bzero(bp->b_data + toread, 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 bp->b_flags |= B_ERROR; 383 } else { 384 towrite = min(bp->b_bcount, 385 fp->f_size-ntfs_cntob(bp->b_blkno)); 386 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 387 towrite,(u_int32_t)fp->f_size)); 388 389 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 390 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 391 bp->b_data, &tmp, NULL); 392 393 if (error) { 394 printf("ntfs_strategy: ntfs_writeattr fail\n"); 395 bp->b_error = error; 396 bp->b_flags |= B_ERROR; 397 } 398 } 399 } 400 biodone(bp); 401 return (error); 402 } 403 404 static int 405 ntfs_write(ap) 406 struct vop_write_args /* { 407 struct vnode *a_vp; 408 struct uio *a_uio; 409 int a_ioflag; 410 struct ucred *a_cred; 411 } */ *ap; 412 { 413 struct vnode *vp = ap->a_vp; 414 struct fnode *fp = VTOF(vp); 415 struct ntnode *ip = FTONT(fp); 416 struct uio *uio = ap->a_uio; 417 struct ntfsmount *ntmp = ip->i_mp; 418 u_int64_t towrite; 419 size_t written; 420 int error; 421 422 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)); 423 dprintf(("ntfs_write: filesize: %d",(u_int32_t)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: %d\n",(u_int32_t)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(ap) 446 struct vop_access_args /* { 447 struct vnode *a_vp; 448 int a_mode; 449 struct ucred *a_cred; 450 struct proc *a_p; 451 } */ *ap; 452 { 453 struct vnode *vp = ap->a_vp; 454 struct ntnode *ip = VTONT(vp); 455 struct ucred *cred = ap->a_cred; 456 mode_t mask, mode = ap->a_mode; 457 gid_t *gp; 458 int i; 459 #ifdef QUOTA 460 int error; 461 #endif 462 463 dprintf(("ntfs_access: %d\n",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 #ifdef QUOTA 478 if (error = getinoquota(ip)) 479 return (error); 480 #endif 481 break; 482 } 483 } 484 485 /* Otherwise, user id 0 always gets access. */ 486 if (cred->cr_uid == 0) 487 return (0); 488 489 mask = 0; 490 491 /* Otherwise, check the owner. */ 492 if (cred->cr_uid == ip->i_mp->ntm_uid) { 493 if (mode & VEXEC) 494 mask |= S_IXUSR; 495 if (mode & VREAD) 496 mask |= S_IRUSR; 497 if (mode & VWRITE) 498 mask |= S_IWUSR; 499 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 500 } 501 502 /* Otherwise, check the groups. */ 503 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 504 if (ip->i_mp->ntm_gid == *gp) { 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 /* Otherwise, check everyone else. */ 515 if (mode & VEXEC) 516 mask |= S_IXOTH; 517 if (mode & VREAD) 518 mask |= S_IROTH; 519 if (mode & VWRITE) 520 mask |= S_IWOTH; 521 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 522 } 523 524 /* 525 * Open called. 526 * 527 * Nothing to do. 528 */ 529 /* ARGSUSED */ 530 static int 531 ntfs_open(ap) 532 struct vop_open_args /* { 533 struct vnode *a_vp; 534 int a_mode; 535 struct ucred *a_cred; 536 struct proc *a_p; 537 } */ *ap; 538 { 539 #if NTFS_DEBUG 540 struct vnode *vp = ap->a_vp; 541 struct ntnode *ip = VTONT(vp); 542 543 printf("ntfs_open: %d\n",ip->i_number); 544 #endif 545 546 /* 547 * Files marked append-only must be opened for appending. 548 */ 549 550 return (0); 551 } 552 553 /* 554 * Close called. 555 * 556 * Update the times on the inode. 557 */ 558 /* ARGSUSED */ 559 static int 560 ntfs_close(ap) 561 struct vop_close_args /* { 562 struct vnode *a_vp; 563 int a_fflag; 564 struct ucred *a_cred; 565 struct proc *a_p; 566 } */ *ap; 567 { 568 #if NTFS_DEBUG 569 struct vnode *vp = ap->a_vp; 570 struct ntnode *ip = VTONT(vp); 571 572 printf("ntfs_close: %d\n",ip->i_number); 573 #endif 574 575 return (0); 576 } 577 578 int 579 ntfs_readdir(ap) 580 struct vop_readdir_args /* { 581 struct vnode *a_vp; 582 struct uio *a_uio; 583 struct ucred *a_cred; 584 int *a_ncookies; 585 u_int **cookies; 586 } */ *ap; 587 { 588 struct vnode *vp = ap->a_vp; 589 struct fnode *fp = VTOF(vp); 590 struct ntnode *ip = FTONT(fp); 591 struct uio *uio = ap->a_uio; 592 struct ntfsmount *ntmp = ip->i_mp; 593 int i, error = 0; 594 u_int32_t faked = 0, num; 595 int ncookies = 0; 596 struct dirent *cde; 597 off_t off; 598 599 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 600 601 off = uio->uio_offset; 602 603 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK); 604 605 /* Simulate . in every dir except ROOT */ 606 if (ip->i_number != NTFS_ROOTINO 607 && uio->uio_offset < sizeof(struct dirent)) { 608 cde->d_fileno = ip->i_number; 609 cde->d_reclen = sizeof(struct dirent); 610 cde->d_type = DT_DIR; 611 cde->d_namlen = 1; 612 strncpy(cde->d_name, ".", 2); 613 error = uiomove((void *)cde, sizeof(struct dirent), uio); 614 if (error) 615 goto out; 616 617 ncookies++; 618 } 619 620 /* Simulate .. in every dir including ROOT */ 621 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 622 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 623 cde->d_reclen = sizeof(struct dirent); 624 cde->d_type = DT_DIR; 625 cde->d_namlen = 2; 626 strncpy(cde->d_name, "..", 3); 627 628 error = uiomove((void *) cde, sizeof(struct dirent), uio); 629 if (error) 630 goto out; 631 632 ncookies++; 633 } 634 635 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 636 num = uio->uio_offset / sizeof(struct dirent) - faked; 637 638 while (uio->uio_resid >= sizeof(struct dirent)) { 639 struct attr_indexentry *iep; 640 char *fname; 641 size_t remains; 642 int sz; 643 644 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 645 if (error) 646 goto out; 647 648 if (NULL == iep) 649 break; 650 651 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 652 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 653 { 654 if(!ntfs_isnamepermitted(ntmp,iep)) 655 continue; 656 657 remains = sizeof(cde->d_name) - 1; 658 fname = cde->d_name; 659 for(i=0; i<iep->ie_fnamelen; i++) { 660 sz = (*ntmp->ntm_wput)(fname, remains, 661 iep->ie_fname[i]); 662 fname += sz; 663 remains -= sz; 664 } 665 *fname = '\0'; 666 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 667 num, cde->d_name, iep->ie_fnametype, 668 iep->ie_flag)); 669 cde->d_namlen = fname - (char *) cde->d_name; 670 cde->d_fileno = iep->ie_number; 671 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 672 cde->d_reclen = sizeof(struct dirent); 673 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 674 675 error = uiomove((void *)cde, sizeof(struct dirent), uio); 676 if (error) 677 goto out; 678 679 ncookies++; 680 num++; 681 } 682 } 683 684 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 685 ncookies,(u_int)(uio->uio_offset - off))); 686 dprintf(("ntfs_readdir: off: %d resid: %d\n", 687 (u_int32_t)uio->uio_offset,uio->uio_resid)); 688 689 if (!error && ap->a_ncookies != NULL) { 690 struct dirent* dpStart; 691 struct dirent* dp; 692 #if defined(__FreeBSD__) 693 u_long *cookies; 694 u_long *cookiep; 695 #else /* defined(__NetBSD__) */ 696 off_t *cookies; 697 off_t *cookiep; 698 #endif 699 700 printf("ntfs_readdir: %d cookies\n",ncookies); 701 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 702 panic("ntfs_readdir: unexpected uio from NFS server"); 703 dpStart = (struct dirent *) 704 ((caddr_t)uio->uio_iov->iov_base - 705 (uio->uio_offset - off)); 706 #if defined(__FreeBSD__) 707 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 708 M_TEMP, M_WAITOK); 709 #else /* defined(__NetBSD__) */ 710 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 711 #endif 712 for (dp = dpStart, cookiep = cookies, i=0; 713 i < ncookies; 714 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 715 off += dp->d_reclen; 716 *cookiep++ = (u_int) off; 717 } 718 *ap->a_ncookies = ncookies; 719 *ap->a_cookies = cookies; 720 } 721 /* 722 if (ap->a_eofflag) 723 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 724 */ 725 out: 726 FREE(cde, M_TEMP); 727 return (error); 728 } 729 730 int 731 ntfs_lookup(ap) 732 struct vop_lookup_args /* { 733 struct vnode *a_dvp; 734 struct vnode **a_vpp; 735 struct componentname *a_cnp; 736 } */ *ap; 737 { 738 struct vnode *dvp = ap->a_dvp; 739 struct ntnode *dip = VTONT(dvp); 740 struct ntfsmount *ntmp = dip->i_mp; 741 struct componentname *cnp = ap->a_cnp; 742 struct ucred *cred = cnp->cn_cred; 743 int error; 744 int lockparent = cnp->cn_flags & LOCKPARENT; 745 #if NTFS_DEBUG 746 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); 747 #endif 748 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 749 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 750 dip->i_number, lockparent, wantparent)); 751 752 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc); 753 if(error) 754 return (error); 755 756 if ((cnp->cn_flags & ISLASTCN) && 757 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 758 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 759 return (EROFS); 760 761 #ifdef __NetBSD__ 762 /* 763 * We now have a segment name to search for, and a directory 764 * to search. 765 * 766 * Before tediously performing a linear scan of the directory, 767 * check the name cache to see if the directory/name pair 768 * we are looking for is known already. 769 */ 770 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 771 return (error); 772 #endif 773 774 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 775 dprintf(("ntfs_lookup: faking . directory in %d\n", 776 dip->i_number)); 777 778 VREF(dvp); 779 *ap->a_vpp = dvp; 780 error = 0; 781 } else if (cnp->cn_flags & ISDOTDOT) { 782 struct ntvattr *vap; 783 784 dprintf(("ntfs_lookup: faking .. directory in %d\n", 785 dip->i_number)); 786 787 VOP_UNLOCK(dvp, 0); 788 cnp->cn_flags |= PDIRUNLOCK; 789 790 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 791 if(error) 792 return (error); 793 794 dprintf(("ntfs_lookup: parentdir: %d\n", 795 vap->va_a_name->n_pnumber)); 796 error = VFS_VGET(ntmp->ntm_mountp, 797 vap->va_a_name->n_pnumber,ap->a_vpp); 798 ntfs_ntvattrrele(vap); 799 if (error) { 800 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 801 cnp->cn_flags &= ~PDIRUNLOCK; 802 return (error); 803 } 804 805 if (lockparent && (cnp->cn_flags & ISLASTCN)) { 806 error = vn_lock(dvp, LK_EXCLUSIVE); 807 if (error) { 808 vput( *(ap->a_vpp) ); 809 return (error); 810 } 811 cnp->cn_flags &= ~PDIRUNLOCK; 812 } 813 } else { 814 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 815 if (error) { 816 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 817 return (error); 818 } 819 820 dprintf(("ntfs_lookup: found ino: %d\n", 821 VTONT(*ap->a_vpp)->i_number)); 822 823 if(!lockparent || (cnp->cn_flags & ISLASTCN) == 0) { 824 VOP_UNLOCK(dvp, 0); 825 cnp->cn_flags |= PDIRUNLOCK; 826 } 827 } 828 829 if (cnp->cn_flags & MAKEENTRY) 830 cache_enter(dvp, *ap->a_vpp, cnp); 831 832 return (error); 833 } 834 835 #if defined(__FreeBSD__) 836 /* 837 * Flush the blocks of a file to disk. 838 * 839 * This function is worthless for vnodes that represent directories. Maybe we 840 * could just do a sync if they try an fsync on a directory file. 841 */ 842 static int 843 ntfs_fsync(ap) 844 struct vop_fsync_args /* { 845 struct vnode *a_vp; 846 struct ucred *a_cred; 847 int a_waitfor; 848 off_t offlo; 849 off_t offhi; 850 struct proc *a_p; 851 } */ *ap; 852 { 853 return (0); 854 } 855 #endif 856 857 /* 858 * Return POSIX pathconf information applicable to NTFS filesystem 859 */ 860 static int 861 ntfs_pathconf(v) 862 void *v; 863 { 864 struct vop_pathconf_args /* { 865 struct vnode *a_vp; 866 int a_name; 867 register_t *a_retval; 868 } */ *ap = v; 869 870 switch (ap->a_name) { 871 case _PC_LINK_MAX: 872 *ap->a_retval = 1; 873 return (0); 874 case _PC_NAME_MAX: 875 *ap->a_retval = NTFS_MAXFILENAME; 876 return (0); 877 case _PC_PATH_MAX: 878 *ap->a_retval = PATH_MAX; 879 return (0); 880 case _PC_CHOWN_RESTRICTED: 881 *ap->a_retval = 1; 882 return (0); 883 case _PC_NO_TRUNC: 884 *ap->a_retval = 0; 885 return (0); 886 case _PC_SYNC_IO: 887 *ap->a_retval = 1; 888 return (0); 889 case _PC_FILESIZEBITS: 890 *ap->a_retval = 64; 891 return (0); 892 default: 893 return (EINVAL); 894 } 895 /* NOTREACHED */ 896 } 897 898 /* 899 * Global vfs data structures 900 */ 901 vop_t **ntfs_vnodeop_p; 902 #if defined(__FreeBSD__) 903 static 904 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 905 { &vop_default_desc, (vop_t *)ntfs_bypass }, 906 907 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 908 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 909 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 910 { &vop_print_desc, (vop_t *)ntfs_print }, 911 { &vop_pathconf_desc, ntfs_pathconf }, 912 913 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 914 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 915 { &vop_lock_desc, (vop_t *)vop_stdlock }, 916 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 917 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 918 919 { &vop_access_desc, (vop_t *)ntfs_access }, 920 { &vop_close_desc, (vop_t *)ntfs_close }, 921 { &vop_open_desc, (vop_t *)ntfs_open }, 922 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 923 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 924 925 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 926 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 927 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 928 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 929 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 930 { &vop_read_desc, (vop_t *)ntfs_read }, 931 { &vop_write_desc, (vop_t *)ntfs_write }, 932 933 { NULL, NULL } 934 }; 935 936 static 937 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 938 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 939 940 VNODEOP_SET(ntfs_vnodeop_opv_desc); 941 942 #else /* !FreeBSD */ 943 944 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 945 { &vop_default_desc, (vop_t *) ntfs_bypass }, 946 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 947 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 948 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 949 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 950 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 951 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 952 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 953 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 954 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 955 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 956 { &vop_lease_desc, genfs_lease_check }, /* lease */ 957 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 958 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 959 { &vop_poll_desc, genfs_poll }, /* poll */ 960 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 961 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 962 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 963 { &vop_fsync_desc, genfs_fsync }, /* fsync */ 964 { &vop_seek_desc, genfs_seek }, /* seek */ 965 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 966 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 967 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 968 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 969 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 970 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 971 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 972 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 973 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 974 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 975 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 976 { &vop_lock_desc, genfs_lock }, /* lock */ 977 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 978 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 979 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 980 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 981 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 982 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 983 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 984 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */ 985 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */ 986 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */ 987 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */ 988 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */ 989 { &vop_update_desc, genfs_eopnotsupp }, /* update */ 990 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 991 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 992 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 993 { NULL, NULL } 994 }; 995 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 996 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 997 998 #endif 999