1 /* $NetBSD: ntfs_vnops.c,v 1.23 1999/10/31 19:45:27 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 * $FreeBSD: src/sys/ntfs/ntfs_vnops.c,v 1.9.2.4 2002/08/06 19:35:18 semenu Exp $ 39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.4 2003/06/26 05:55:18 dillon Exp $ 40 * 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/time.h> 47 #include <sys/types.h> 48 #include <sys/stat.h> 49 #include <sys/vnode.h> 50 #include <sys/mount.h> 51 #include <sys/proc.h> 52 #include <sys/namei.h> 53 #include <sys/malloc.h> 54 #include <sys/buf.h> 55 #include <sys/dirent.h> 56 57 #include <vm/vm.h> 58 #include <vm/vm_param.h> 59 #if defined(__NetBSD__) 60 #include <vm/vm_prot.h> 61 #endif 62 #include <vm/vm_page.h> 63 #include <vm/vm_object.h> 64 #include <vm/vm_pager.h> 65 #if defined(__FreeBSD__) 66 #include <vm/vnode_pager.h> 67 #endif 68 #include <vm/vm_extern.h> 69 70 #include <sys/sysctl.h> 71 72 /*#define NTFS_DEBUG 1*/ 73 #include <ntfs/ntfs.h> 74 #include <ntfs/ntfs_inode.h> 75 #include <ntfs/ntfs_subr.h> 76 #if defined(__NetBSD__) 77 #include <miscfs/specfs/specdev.h> 78 #include <miscfs/genfs/genfs.h> 79 #endif 80 81 #include <sys/unistd.h> /* for pathconf(2) constants */ 82 83 static int ntfs_read __P((struct vop_read_args *)); 84 static int ntfs_write __P((struct vop_write_args *ap)); 85 static int ntfs_getattr __P((struct vop_getattr_args *ap)); 86 static int ntfs_inactive __P((struct vop_inactive_args *ap)); 87 static int ntfs_print __P((struct vop_print_args *ap)); 88 static int ntfs_reclaim __P((struct vop_reclaim_args *ap)); 89 static int ntfs_strategy __P((struct vop_strategy_args *ap)); 90 static int ntfs_access __P((struct vop_access_args *ap)); 91 static int ntfs_open __P((struct vop_open_args *ap)); 92 static int ntfs_close __P((struct vop_close_args *ap)); 93 static int ntfs_readdir __P((struct vop_readdir_args *ap)); 94 static int ntfs_lookup __P((struct vop_lookup_args *ap)); 95 static int ntfs_bmap __P((struct vop_bmap_args *ap)); 96 #if defined(__FreeBSD__) 97 static int ntfs_getpages __P((struct vop_getpages_args *ap)); 98 static int ntfs_putpages __P((struct vop_putpages_args *)); 99 static int ntfs_fsync __P((struct vop_fsync_args *ap)); 100 #else 101 static int ntfs_bypass __P((struct vop_generic_args *ap)); 102 #endif 103 static int ntfs_pathconf __P((void *)); 104 105 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 106 107 #if defined(__FreeBSD__) 108 int 109 ntfs_getpages(ap) 110 struct vop_getpages_args *ap; 111 { 112 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 113 ap->a_reqpage); 114 } 115 116 int 117 ntfs_putpages(ap) 118 struct vop_putpages_args *ap; 119 { 120 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 121 ap->a_sync, ap->a_rtvals); 122 } 123 #endif 124 125 /* 126 * This is a noop, simply returning what one has been given. 127 */ 128 int 129 ntfs_bmap(ap) 130 struct vop_bmap_args /* { 131 struct vnode *a_vp; 132 daddr_t a_bn; 133 struct vnode **a_vpp; 134 daddr_t *a_bnp; 135 int *a_runp; 136 int *a_runb; 137 } */ *ap; 138 { 139 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 140 if (ap->a_vpp != NULL) 141 *ap->a_vpp = ap->a_vp; 142 if (ap->a_bnp != NULL) 143 *ap->a_bnp = ap->a_bn; 144 if (ap->a_runp != NULL) 145 *ap->a_runp = 0; 146 #if !defined(__NetBSD__) 147 if (ap->a_runb != NULL) 148 *ap->a_runb = 0; 149 #endif 150 return (0); 151 } 152 153 static int 154 ntfs_read(ap) 155 struct vop_read_args /* { 156 struct vnode *a_vp; 157 struct uio *a_uio; 158 int a_ioflag; 159 struct ucred *a_cred; 160 } */ *ap; 161 { 162 register struct vnode *vp = ap->a_vp; 163 register struct fnode *fp = VTOF(vp); 164 register struct ntnode *ip = FTONT(fp); 165 struct uio *uio = ap->a_uio; 166 struct ntfsmount *ntmp = ip->i_mp; 167 struct buf *bp; 168 daddr_t cn; 169 int resid, off, toread; 170 int error; 171 172 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)); 173 174 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 175 176 /* don't allow reading after end of file */ 177 if (uio->uio_offset > fp->f_size) 178 return (0); 179 180 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset); 181 182 dprintf((", resid: %d\n", resid)); 183 184 error = 0; 185 while (resid) { 186 cn = ntfs_btocn(uio->uio_offset); 187 off = ntfs_btocnoff(uio->uio_offset); 188 189 toread = min(off + resid, ntfs_cntob(1)); 190 191 error = bread(vp, cn, ntfs_cntob(1), &bp); 192 if (error) { 193 brelse(bp); 194 break; 195 } 196 197 error = uiomove(bp->b_data + off, toread - off, uio); 198 if(error) { 199 brelse(bp); 200 break; 201 } 202 brelse(bp); 203 204 resid -= toread - off; 205 } 206 207 return (error); 208 } 209 210 #if !defined(__FreeBSD__) 211 212 static int 213 ntfs_bypass(ap) 214 struct vop_generic_args /* { 215 struct vnodeop_desc *a_desc; 216 <other random data follows, presumably> 217 } */ *ap; 218 { 219 int error = ENOTTY; 220 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 221 return (error); 222 } 223 224 #endif 225 226 static int 227 ntfs_getattr(ap) 228 struct vop_getattr_args /* { 229 struct vnode *a_vp; 230 struct vattr *a_vap; 231 struct ucred *a_cred; 232 struct thread *a_td; 233 } */ *ap; 234 { 235 register struct vnode *vp = ap->a_vp; 236 register struct fnode *fp = VTOF(vp); 237 register struct ntnode *ip = FTONT(fp); 238 register struct vattr *vap = ap->a_vap; 239 240 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 241 242 #if defined(__FreeBSD__) 243 vap->va_fsid = dev2udev(ip->i_dev); 244 #else /* NetBSD */ 245 vap->va_fsid = ip->i_dev; 246 #endif 247 vap->va_fileid = ip->i_number; 248 vap->va_mode = ip->i_mp->ntm_mode; 249 vap->va_nlink = ip->i_nlink; 250 vap->va_uid = ip->i_mp->ntm_uid; 251 vap->va_gid = ip->i_mp->ntm_gid; 252 vap->va_rdev = 0; /* XXX UNODEV ? */ 253 vap->va_size = fp->f_size; 254 vap->va_bytes = fp->f_allocated; 255 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 256 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 257 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 258 vap->va_flags = ip->i_flag; 259 vap->va_gen = 0; 260 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 261 vap->va_type = vp->v_type; 262 vap->va_filerev = 0; 263 return (0); 264 } 265 266 267 /* 268 * Last reference to an ntnode. If necessary, write or delete it. 269 */ 270 int 271 ntfs_inactive(ap) 272 struct vop_inactive_args /* { 273 struct vnode *a_vp; 274 } */ *ap; 275 { 276 register struct vnode *vp = ap->a_vp; 277 #ifdef NTFS_DEBUG 278 register struct ntnode *ip = VTONT(vp); 279 #endif 280 281 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 282 283 if (ntfs_prtactive && vp->v_usecount != 0) 284 vprint("ntfs_inactive: pushing active", vp); 285 286 VOP__UNLOCK(vp, 0, ap->a_td); 287 288 /* XXX since we don't support any filesystem changes 289 * right now, nothing more needs to be done 290 */ 291 return (0); 292 } 293 294 /* 295 * Reclaim an fnode/ntnode so that it can be used for other purposes. 296 */ 297 int 298 ntfs_reclaim(ap) 299 struct vop_reclaim_args /* { 300 struct vnode *a_vp; 301 } */ *ap; 302 { 303 register struct vnode *vp = ap->a_vp; 304 register struct fnode *fp = VTOF(vp); 305 register struct ntnode *ip = FTONT(fp); 306 int error; 307 308 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 309 310 if (ntfs_prtactive && vp->v_usecount != 0) 311 vprint("ntfs_reclaim: pushing active", vp); 312 313 if ((error = ntfs_ntget(ip)) != 0) 314 return (error); 315 316 /* Purge old data structures associated with the inode. */ 317 cache_purge(vp); 318 319 ntfs_frele(fp); 320 ntfs_ntput(ip); 321 vp->v_data = NULL; 322 323 return (0); 324 } 325 326 static int 327 ntfs_print(ap) 328 struct vop_print_args /* { 329 struct vnode *a_vp; 330 } */ *ap; 331 { 332 return (0); 333 } 334 335 /* 336 * Calculate the logical to physical mapping if not done already, 337 * then call the device strategy routine. 338 */ 339 int 340 ntfs_strategy(ap) 341 struct vop_strategy_args /* { 342 struct buf *a_bp; 343 } */ *ap; 344 { 345 register struct buf *bp = ap->a_bp; 346 register struct vnode *vp = bp->b_vp; 347 register struct fnode *fp = VTOF(vp); 348 register struct ntnode *ip = FTONT(fp); 349 struct ntfsmount *ntmp = ip->i_mp; 350 int error; 351 352 #ifdef __FreeBSD__ 353 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 354 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 355 (u_int32_t)bp->b_lblkno)); 356 #else 357 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 358 (u_int32_t)bp->b_blkno, 359 (u_int32_t)bp->b_lblkno)); 360 #endif 361 362 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 363 (u_int32_t)bp->b_bcount,bp->b_flags)); 364 365 if (bp->b_flags & B_READ) { 366 u_int32_t toread; 367 368 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 369 clrbuf(bp); 370 error = 0; 371 } else { 372 toread = min(bp->b_bcount, 373 fp->f_size-ntfs_cntob(bp->b_blkno)); 374 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 375 toread,(u_int32_t)fp->f_size)); 376 377 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 378 fp->f_attrname, ntfs_cntob(bp->b_blkno), 379 toread, bp->b_data, NULL); 380 381 if (error) { 382 printf("ntfs_strategy: ntfs_readattr failed\n"); 383 bp->b_error = error; 384 bp->b_flags |= B_ERROR; 385 } 386 387 bzero(bp->b_data + toread, bp->b_bcount - toread); 388 } 389 } else { 390 size_t tmp; 391 u_int32_t towrite; 392 393 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 394 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 395 bp->b_error = error = EFBIG; 396 bp->b_flags |= B_ERROR; 397 } else { 398 towrite = min(bp->b_bcount, 399 fp->f_size-ntfs_cntob(bp->b_blkno)); 400 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 401 towrite,(u_int32_t)fp->f_size)); 402 403 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 404 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 405 bp->b_data, &tmp, NULL); 406 407 if (error) { 408 printf("ntfs_strategy: ntfs_writeattr fail\n"); 409 bp->b_error = error; 410 bp->b_flags |= B_ERROR; 411 } 412 } 413 } 414 biodone(bp); 415 return (error); 416 } 417 418 static int 419 ntfs_write(ap) 420 struct vop_write_args /* { 421 struct vnode *a_vp; 422 struct uio *a_uio; 423 int a_ioflag; 424 struct ucred *a_cred; 425 } */ *ap; 426 { 427 register struct vnode *vp = ap->a_vp; 428 register struct fnode *fp = VTOF(vp); 429 register struct ntnode *ip = FTONT(fp); 430 struct uio *uio = ap->a_uio; 431 struct ntfsmount *ntmp = ip->i_mp; 432 u_int64_t towrite; 433 size_t written; 434 int error; 435 436 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)); 437 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 438 439 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 440 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 441 return (EFBIG); 442 } 443 444 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 445 446 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 447 448 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 449 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 450 #ifdef NTFS_DEBUG 451 if (error) 452 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 453 #endif 454 455 return (error); 456 } 457 458 int 459 ntfs_access(ap) 460 struct vop_access_args /* { 461 struct vnode *a_vp; 462 int a_mode; 463 struct ucred *a_cred; 464 struct thread *a_td; 465 } */ *ap; 466 { 467 struct vnode *vp = ap->a_vp; 468 struct ntnode *ip = VTONT(vp); 469 struct ucred *cred = ap->a_cred; 470 mode_t mask, mode = ap->a_mode; 471 register gid_t *gp; 472 int i; 473 #ifdef QUOTA 474 int error; 475 #endif 476 477 dprintf(("ntfs_access: %d\n",ip->i_number)); 478 479 /* 480 * Disallow write attempts on read-only file systems; 481 * unless the file is a socket, fifo, or a block or 482 * character device resident on the file system. 483 */ 484 if (mode & VWRITE) { 485 switch ((int)vp->v_type) { 486 case VDIR: 487 case VLNK: 488 case VREG: 489 if (vp->v_mount->mnt_flag & MNT_RDONLY) 490 return (EROFS); 491 #ifdef QUOTA 492 if (error = getinoquota(ip)) 493 return (error); 494 #endif 495 break; 496 } 497 } 498 499 /* Otherwise, user id 0 always gets access. */ 500 if (cred->cr_uid == 0) 501 return (0); 502 503 mask = 0; 504 505 /* Otherwise, check the owner. */ 506 if (cred->cr_uid == ip->i_mp->ntm_uid) { 507 if (mode & VEXEC) 508 mask |= S_IXUSR; 509 if (mode & VREAD) 510 mask |= S_IRUSR; 511 if (mode & VWRITE) 512 mask |= S_IWUSR; 513 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 514 } 515 516 /* Otherwise, check the groups. */ 517 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 518 if (ip->i_mp->ntm_gid == *gp) { 519 if (mode & VEXEC) 520 mask |= S_IXGRP; 521 if (mode & VREAD) 522 mask |= S_IRGRP; 523 if (mode & VWRITE) 524 mask |= S_IWGRP; 525 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 526 } 527 528 /* Otherwise, check everyone else. */ 529 if (mode & VEXEC) 530 mask |= S_IXOTH; 531 if (mode & VREAD) 532 mask |= S_IROTH; 533 if (mode & VWRITE) 534 mask |= S_IWOTH; 535 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 536 } 537 538 /* 539 * Open called. 540 * 541 * Nothing to do. 542 */ 543 /* ARGSUSED */ 544 static int 545 ntfs_open(ap) 546 struct vop_open_args /* { 547 struct vnode *a_vp; 548 int a_mode; 549 struct ucred *a_cred; 550 struct thread *a_td; 551 } */ *ap; 552 { 553 #if NTFS_DEBUG 554 register struct vnode *vp = ap->a_vp; 555 register struct ntnode *ip = VTONT(vp); 556 557 printf("ntfs_open: %d\n",ip->i_number); 558 #endif 559 560 /* 561 * Files marked append-only must be opened for appending. 562 */ 563 564 return (0); 565 } 566 567 /* 568 * Close called. 569 * 570 * Update the times on the inode. 571 */ 572 /* ARGSUSED */ 573 static int 574 ntfs_close(ap) 575 struct vop_close_args /* { 576 struct vnode *a_vp; 577 int a_fflag; 578 struct ucred *a_cred; 579 struct thread *a_td; 580 } */ *ap; 581 { 582 #if NTFS_DEBUG 583 register struct vnode *vp = ap->a_vp; 584 register struct ntnode *ip = VTONT(vp); 585 586 printf("ntfs_close: %d\n",ip->i_number); 587 #endif 588 589 return (0); 590 } 591 592 int 593 ntfs_readdir(ap) 594 struct vop_readdir_args /* { 595 struct vnode *a_vp; 596 struct uio *a_uio; 597 struct ucred *a_cred; 598 int *a_ncookies; 599 u_int **cookies; 600 } */ *ap; 601 { 602 register struct vnode *vp = ap->a_vp; 603 register struct fnode *fp = VTOF(vp); 604 register struct ntnode *ip = FTONT(fp); 605 struct uio *uio = ap->a_uio; 606 struct ntfsmount *ntmp = ip->i_mp; 607 int i, error = 0; 608 u_int32_t faked = 0, num; 609 int ncookies = 0; 610 struct dirent cde; 611 off_t off; 612 613 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 614 615 off = uio->uio_offset; 616 617 /* Simulate . in every dir except ROOT */ 618 if( ip->i_number != NTFS_ROOTINO ) { 619 struct dirent dot = { NTFS_ROOTINO, 620 sizeof(struct dirent), DT_DIR, 1, "." }; 621 622 if( uio->uio_offset < sizeof(struct dirent) ) { 623 dot.d_fileno = ip->i_number; 624 error = uiomove((char *)&dot,sizeof(struct dirent),uio); 625 if(error) 626 return (error); 627 628 ncookies ++; 629 } 630 } 631 632 /* Simulate .. in every dir including ROOT */ 633 if( uio->uio_offset < 2 * sizeof(struct dirent) ) { 634 struct dirent dotdot = { NTFS_ROOTINO, 635 sizeof(struct dirent), DT_DIR, 2, ".." }; 636 637 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio); 638 if(error) 639 return (error); 640 641 ncookies ++; 642 } 643 644 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 645 num = uio->uio_offset / sizeof(struct dirent) - faked; 646 647 while( uio->uio_resid >= sizeof(struct dirent) ) { 648 struct attr_indexentry *iep; 649 650 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 651 652 if(error) 653 return (error); 654 655 if( NULL == iep ) 656 break; 657 658 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 659 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 660 { 661 if(!ntfs_isnamepermitted(ntmp,iep)) 662 continue; 663 664 for(i=0; i<iep->ie_fnamelen; i++) { 665 cde.d_name[i] = NTFS_U28(iep->ie_fname[i]); 666 } 667 cde.d_name[i] = '\0'; 668 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 669 num, cde.d_name, iep->ie_fnametype, 670 iep->ie_flag)); 671 cde.d_namlen = iep->ie_fnamelen; 672 cde.d_fileno = iep->ie_number; 673 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 674 cde.d_reclen = sizeof(struct dirent); 675 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg")); 676 677 error = uiomove((char *)&cde, sizeof(struct dirent), uio); 678 if(error) 679 return (error); 680 681 ncookies++; 682 num++; 683 } 684 } 685 686 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 687 ncookies,(u_int)(uio->uio_offset - off))); 688 dprintf(("ntfs_readdir: off: %d resid: %d\n", 689 (u_int32_t)uio->uio_offset,uio->uio_resid)); 690 691 if (!error && ap->a_ncookies != NULL) { 692 struct dirent* dpStart; 693 struct dirent* dp; 694 #if defined(__FreeBSD__) 695 u_long *cookies; 696 u_long *cookiep; 697 #else /* defined(__NetBSD__) */ 698 off_t *cookies; 699 off_t *cookiep; 700 #endif 701 702 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 703 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 704 panic("ntfs_readdir: unexpected uio from NFS server"); 705 dpStart = (struct dirent *) 706 ((caddr_t)uio->uio_iov->iov_base - 707 (uio->uio_offset - off)); 708 #if defined(__FreeBSD__) 709 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 710 M_TEMP, M_WAITOK); 711 #else /* defined(__NetBSD__) */ 712 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 713 M_TEMP, M_WAITOK); 714 #endif 715 for (dp = dpStart, cookiep = cookies, i=0; 716 i < ncookies; 717 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 718 off += dp->d_reclen; 719 *cookiep++ = (u_int) off; 720 } 721 *ap->a_ncookies = ncookies; 722 *ap->a_cookies = cookies; 723 } 724 /* 725 if (ap->a_eofflag) 726 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 727 */ 728 return (error); 729 } 730 731 int 732 ntfs_lookup(ap) 733 struct vop_lookup_args /* { 734 struct vnode *a_dvp; 735 struct vnode **a_vpp; 736 struct componentname *a_cnp; 737 } */ *ap; 738 { 739 register struct vnode *dvp = ap->a_dvp; 740 register struct ntnode *dip = VTONT(dvp); 741 struct ntfsmount *ntmp = dip->i_mp; 742 struct componentname *cnp = ap->a_cnp; 743 struct ucred *cred = cnp->cn_cred; 744 int error; 745 int lockparent = cnp->cn_flags & LOCKPARENT; 746 #if NTFS_DEBUG 747 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); 748 #endif 749 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 750 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 751 dip->i_number, lockparent, wantparent)); 752 753 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_td); 754 if(error) 755 return (error); 756 757 if ((cnp->cn_flags & ISLASTCN) && 758 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 759 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 760 return (EROFS); 761 762 #ifdef __NetBSD__ 763 /* 764 * We now have a segment name to search for, and a directory 765 * to search. 766 * 767 * Before tediously performing a linear scan of the directory, 768 * check the name cache to see if the directory/name pair 769 * we are looking for is known already. 770 */ 771 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 772 return (error); 773 #endif 774 775 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 776 dprintf(("ntfs_lookup: faking . directory in %d\n", 777 dip->i_number)); 778 779 VREF(dvp); 780 *ap->a_vpp = dvp; 781 error = 0; 782 } else if (cnp->cn_flags & ISDOTDOT) { 783 struct ntvattr *vap; 784 785 dprintf(("ntfs_lookup: faking .. directory in %d\n", 786 dip->i_number)); 787 788 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 789 if(error) 790 return (error); 791 792 VOP__UNLOCK(dvp,0,cnp->cn_td); 793 cnp->cn_flags |= PDIRUNLOCK; 794 795 dprintf(("ntfs_lookup: parentdir: %d\n", 796 vap->va_a_name->n_pnumber)); 797 error = VFS_VGET(ntmp->ntm_mountp, 798 vap->va_a_name->n_pnumber,ap->a_vpp); 799 ntfs_ntvattrrele(vap); 800 if (error) { 801 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_td)==0) 802 cnp->cn_flags &= ~PDIRUNLOCK; 803 return (error); 804 } 805 806 if (lockparent && (cnp->cn_flags & ISLASTCN)) { 807 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_td); 808 if (error) { 809 vput( *(ap->a_vpp) ); 810 return (error); 811 } 812 cnp->cn_flags &= ~PDIRUNLOCK; 813 } 814 } else { 815 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 816 if (error) { 817 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 818 return (error); 819 } 820 821 dprintf(("ntfs_lookup: found ino: %d\n", 822 VTONT(*ap->a_vpp)->i_number)); 823 824 if(!lockparent || !(cnp->cn_flags & ISLASTCN)) 825 VOP__UNLOCK(dvp, 0, cnp->cn_td); 826 } 827 828 if (cnp->cn_flags & MAKEENTRY) 829 cache_enter(dvp, *ap->a_vpp, cnp); 830 831 return (error); 832 } 833 834 #if defined(__FreeBSD__) 835 /* 836 * Flush the blocks of a file to disk. 837 * 838 * This function is worthless for vnodes that represent directories. Maybe we 839 * could just do a sync if they try an fsync on a directory file. 840 */ 841 static int 842 ntfs_fsync(ap) 843 struct vop_fsync_args /* { 844 struct vnode *a_vp; 845 struct ucred *a_cred; 846 int a_waitfor; 847 struct thread *a_td; 848 } */ *ap; 849 { 850 return (0); 851 } 852 #endif 853 854 /* 855 * Return POSIX pathconf information applicable to NTFS filesystem 856 */ 857 int 858 ntfs_pathconf(v) 859 void *v; 860 { 861 struct vop_pathconf_args /* { 862 struct vnode *a_vp; 863 int a_name; 864 register_t *a_retval; 865 } */ *ap = v; 866 867 switch (ap->a_name) { 868 case _PC_LINK_MAX: 869 *ap->a_retval = 1; 870 return (0); 871 case _PC_NAME_MAX: 872 *ap->a_retval = NTFS_MAXFILENAME; 873 return (0); 874 case _PC_PATH_MAX: 875 *ap->a_retval = PATH_MAX; 876 return (0); 877 case _PC_CHOWN_RESTRICTED: 878 *ap->a_retval = 1; 879 return (0); 880 case _PC_NO_TRUNC: 881 *ap->a_retval = 0; 882 return (0); 883 #if defined(__NetBSD__) 884 case _PC_SYNC_IO: 885 *ap->a_retval = 1; 886 return (0); 887 case _PC_FILESIZEBITS: 888 *ap->a_retval = 64; 889 return (0); 890 #endif 891 default: 892 return (EINVAL); 893 } 894 /* NOTREACHED */ 895 } 896 897 /* 898 * Global vfs data structures 899 */ 900 vop_t **ntfs_vnodeop_p; 901 #if defined(__FreeBSD__) 902 static 903 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 904 { &vop_default_desc, (vop_t *)vop_defaultop }, 905 906 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 907 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 908 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 909 { &vop_print_desc, (vop_t *)ntfs_print }, 910 { &vop_pathconf_desc, ntfs_pathconf }, 911 912 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 913 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 914 { &vop_lock_desc, (vop_t *)vop_stdlock }, 915 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 916 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 917 918 { &vop_access_desc, (vop_t *)ntfs_access }, 919 { &vop_close_desc, (vop_t *)ntfs_close }, 920 { &vop_open_desc, (vop_t *)ntfs_open }, 921 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 922 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 923 924 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 925 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 926 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 927 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 928 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 929 { &vop_read_desc, (vop_t *)ntfs_read }, 930 { &vop_write_desc, (vop_t *)ntfs_write }, 931 932 { NULL, NULL } 933 }; 934 935 static 936 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 937 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 938 939 VNODEOP_SET(ntfs_vnodeop_opv_desc); 940 941 #else /* !FreeBSD */ 942 943 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 944 { &vop_default_desc, (vop_t *) ntfs_bypass }, 945 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 946 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 947 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 948 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 949 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 950 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 951 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 952 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 953 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 954 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 955 { &vop_lease_desc, genfs_lease_check }, /* lease */ 956 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 957 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 958 { &vop_poll_desc, genfs_poll }, /* poll */ 959 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 960 { &vop_mmap_desc, genfs_eopnotsupp }, /* mmap */ 961 { &vop_fsync_desc, genfs_fsync }, /* fsync */ 962 { &vop_seek_desc, genfs_seek }, /* seek */ 963 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 964 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 965 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 966 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 967 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 968 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 969 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 970 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 971 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 972 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 973 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 974 { &vop_lock_desc, genfs_lock }, /* lock */ 975 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 976 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 977 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 978 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 979 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 980 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 981 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 982 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */ 983 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */ 984 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */ 985 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */ 986 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */ 987 { &vop_update_desc, genfs_eopnotsupp }, /* update */ 988 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 989 { (struct vnodeop_desc *)NULL, (int (*) __P((void *)))NULL } 990 }; 991 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 992 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 993 994 #endif 995