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 1.2 2003/06/17 04:28:54 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/namei.h> 52 #include <sys/malloc.h> 53 #include <sys/buf.h> 54 #include <sys/dirent.h> 55 56 #include <vm/vm.h> 57 #include <vm/vm_param.h> 58 #if defined(__NetBSD__) 59 #include <vm/vm_prot.h> 60 #endif 61 #include <vm/vm_page.h> 62 #include <vm/vm_object.h> 63 #include <vm/vm_pager.h> 64 #if defined(__FreeBSD__) 65 #include <vm/vnode_pager.h> 66 #endif 67 #include <vm/vm_extern.h> 68 69 #include <sys/sysctl.h> 70 71 /*#define NTFS_DEBUG 1*/ 72 #include <ntfs/ntfs.h> 73 #include <ntfs/ntfs_inode.h> 74 #include <ntfs/ntfs_subr.h> 75 #if defined(__NetBSD__) 76 #include <miscfs/specfs/specdev.h> 77 #include <miscfs/genfs/genfs.h> 78 #endif 79 80 #include <sys/unistd.h> /* for pathconf(2) constants */ 81 82 static int ntfs_read __P((struct vop_read_args *)); 83 static int ntfs_write __P((struct vop_write_args *ap)); 84 static int ntfs_getattr __P((struct vop_getattr_args *ap)); 85 static int ntfs_inactive __P((struct vop_inactive_args *ap)); 86 static int ntfs_print __P((struct vop_print_args *ap)); 87 static int ntfs_reclaim __P((struct vop_reclaim_args *ap)); 88 static int ntfs_strategy __P((struct vop_strategy_args *ap)); 89 static int ntfs_access __P((struct vop_access_args *ap)); 90 static int ntfs_open __P((struct vop_open_args *ap)); 91 static int ntfs_close __P((struct vop_close_args *ap)); 92 static int ntfs_readdir __P((struct vop_readdir_args *ap)); 93 static int ntfs_lookup __P((struct vop_lookup_args *ap)); 94 static int ntfs_bmap __P((struct vop_bmap_args *ap)); 95 #if defined(__FreeBSD__) 96 static int ntfs_getpages __P((struct vop_getpages_args *ap)); 97 static int ntfs_putpages __P((struct vop_putpages_args *)); 98 static int ntfs_fsync __P((struct vop_fsync_args *ap)); 99 #else 100 static int ntfs_bypass __P((struct vop_generic_args *ap)); 101 #endif 102 static int ntfs_pathconf __P((void *)); 103 104 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 105 106 #if defined(__FreeBSD__) 107 int 108 ntfs_getpages(ap) 109 struct vop_getpages_args *ap; 110 { 111 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 112 ap->a_reqpage); 113 } 114 115 int 116 ntfs_putpages(ap) 117 struct vop_putpages_args *ap; 118 { 119 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 120 ap->a_sync, ap->a_rtvals); 121 } 122 #endif 123 124 /* 125 * This is a noop, simply returning what one has been given. 126 */ 127 int 128 ntfs_bmap(ap) 129 struct vop_bmap_args /* { 130 struct vnode *a_vp; 131 daddr_t a_bn; 132 struct vnode **a_vpp; 133 daddr_t *a_bnp; 134 int *a_runp; 135 int *a_runb; 136 } */ *ap; 137 { 138 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 139 if (ap->a_vpp != NULL) 140 *ap->a_vpp = ap->a_vp; 141 if (ap->a_bnp != NULL) 142 *ap->a_bnp = ap->a_bn; 143 if (ap->a_runp != NULL) 144 *ap->a_runp = 0; 145 #if !defined(__NetBSD__) 146 if (ap->a_runb != NULL) 147 *ap->a_runb = 0; 148 #endif 149 return (0); 150 } 151 152 static int 153 ntfs_read(ap) 154 struct vop_read_args /* { 155 struct vnode *a_vp; 156 struct uio *a_uio; 157 int a_ioflag; 158 struct ucred *a_cred; 159 } */ *ap; 160 { 161 register struct vnode *vp = ap->a_vp; 162 register struct fnode *fp = VTOF(vp); 163 register struct ntnode *ip = FTONT(fp); 164 struct uio *uio = ap->a_uio; 165 struct ntfsmount *ntmp = ip->i_mp; 166 struct buf *bp; 167 daddr_t cn; 168 int resid, off, toread; 169 int error; 170 171 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)); 172 173 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 174 175 /* don't allow reading after end of file */ 176 if (uio->uio_offset > fp->f_size) 177 return (0); 178 179 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset); 180 181 dprintf((", resid: %d\n", resid)); 182 183 error = 0; 184 while (resid) { 185 cn = ntfs_btocn(uio->uio_offset); 186 off = ntfs_btocnoff(uio->uio_offset); 187 188 toread = min(off + resid, ntfs_cntob(1)); 189 190 error = bread(vp, cn, ntfs_cntob(1), NOCRED, &bp); 191 if (error) { 192 brelse(bp); 193 break; 194 } 195 196 error = uiomove(bp->b_data + off, toread - off, uio); 197 if(error) { 198 brelse(bp); 199 break; 200 } 201 brelse(bp); 202 203 resid -= toread - off; 204 } 205 206 return (error); 207 } 208 209 #if !defined(__FreeBSD__) 210 211 static int 212 ntfs_bypass(ap) 213 struct vop_generic_args /* { 214 struct vnodeop_desc *a_desc; 215 <other random data follows, presumably> 216 } */ *ap; 217 { 218 int error = ENOTTY; 219 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 220 return (error); 221 } 222 223 #endif 224 225 static int 226 ntfs_getattr(ap) 227 struct vop_getattr_args /* { 228 struct vnode *a_vp; 229 struct vattr *a_vap; 230 struct ucred *a_cred; 231 struct proc *a_p; 232 } */ *ap; 233 { 234 register struct vnode *vp = ap->a_vp; 235 register struct fnode *fp = VTOF(vp); 236 register struct ntnode *ip = FTONT(fp); 237 register struct vattr *vap = ap->a_vap; 238 239 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 240 241 #if defined(__FreeBSD__) 242 vap->va_fsid = dev2udev(ip->i_dev); 243 #else /* NetBSD */ 244 vap->va_fsid = ip->i_dev; 245 #endif 246 vap->va_fileid = ip->i_number; 247 vap->va_mode = ip->i_mp->ntm_mode; 248 vap->va_nlink = ip->i_nlink; 249 vap->va_uid = ip->i_mp->ntm_uid; 250 vap->va_gid = ip->i_mp->ntm_gid; 251 vap->va_rdev = 0; /* XXX UNODEV ? */ 252 vap->va_size = fp->f_size; 253 vap->va_bytes = fp->f_allocated; 254 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 255 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 256 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 257 vap->va_flags = ip->i_flag; 258 vap->va_gen = 0; 259 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 260 vap->va_type = vp->v_type; 261 vap->va_filerev = 0; 262 return (0); 263 } 264 265 266 /* 267 * Last reference to an ntnode. If necessary, write or delete it. 268 */ 269 int 270 ntfs_inactive(ap) 271 struct vop_inactive_args /* { 272 struct vnode *a_vp; 273 } */ *ap; 274 { 275 register struct vnode *vp = ap->a_vp; 276 #ifdef NTFS_DEBUG 277 register struct ntnode *ip = VTONT(vp); 278 #endif 279 280 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 281 282 if (ntfs_prtactive && vp->v_usecount != 0) 283 vprint("ntfs_inactive: pushing active", vp); 284 285 VOP__UNLOCK(vp, 0, ap->a_p); 286 287 /* XXX since we don't support any filesystem changes 288 * right now, nothing more needs to be done 289 */ 290 return (0); 291 } 292 293 /* 294 * Reclaim an fnode/ntnode so that it can be used for other purposes. 295 */ 296 int 297 ntfs_reclaim(ap) 298 struct vop_reclaim_args /* { 299 struct vnode *a_vp; 300 } */ *ap; 301 { 302 register struct vnode *vp = ap->a_vp; 303 register struct fnode *fp = VTOF(vp); 304 register struct ntnode *ip = FTONT(fp); 305 int error; 306 307 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 308 309 if (ntfs_prtactive && vp->v_usecount != 0) 310 vprint("ntfs_reclaim: pushing active", vp); 311 312 if ((error = ntfs_ntget(ip)) != 0) 313 return (error); 314 315 /* Purge old data structures associated with the inode. */ 316 cache_purge(vp); 317 318 ntfs_frele(fp); 319 ntfs_ntput(ip); 320 vp->v_data = NULL; 321 322 return (0); 323 } 324 325 static int 326 ntfs_print(ap) 327 struct vop_print_args /* { 328 struct vnode *a_vp; 329 } */ *ap; 330 { 331 return (0); 332 } 333 334 /* 335 * Calculate the logical to physical mapping if not done already, 336 * then call the device strategy routine. 337 */ 338 int 339 ntfs_strategy(ap) 340 struct vop_strategy_args /* { 341 struct buf *a_bp; 342 } */ *ap; 343 { 344 register struct buf *bp = ap->a_bp; 345 register struct vnode *vp = bp->b_vp; 346 register struct fnode *fp = VTOF(vp); 347 register struct ntnode *ip = FTONT(fp); 348 struct ntfsmount *ntmp = ip->i_mp; 349 int error; 350 351 #ifdef __FreeBSD__ 352 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 353 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 354 (u_int32_t)bp->b_lblkno)); 355 #else 356 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 357 (u_int32_t)bp->b_blkno, 358 (u_int32_t)bp->b_lblkno)); 359 #endif 360 361 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 362 (u_int32_t)bp->b_bcount,bp->b_flags)); 363 364 if (bp->b_flags & B_READ) { 365 u_int32_t toread; 366 367 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 368 clrbuf(bp); 369 error = 0; 370 } else { 371 toread = min(bp->b_bcount, 372 fp->f_size-ntfs_cntob(bp->b_blkno)); 373 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 374 toread,(u_int32_t)fp->f_size)); 375 376 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 377 fp->f_attrname, ntfs_cntob(bp->b_blkno), 378 toread, bp->b_data, NULL); 379 380 if (error) { 381 printf("ntfs_strategy: ntfs_readattr failed\n"); 382 bp->b_error = error; 383 bp->b_flags |= B_ERROR; 384 } 385 386 bzero(bp->b_data + toread, bp->b_bcount - toread); 387 } 388 } else { 389 size_t tmp; 390 u_int32_t towrite; 391 392 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 393 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 394 bp->b_error = error = EFBIG; 395 bp->b_flags |= B_ERROR; 396 } else { 397 towrite = min(bp->b_bcount, 398 fp->f_size-ntfs_cntob(bp->b_blkno)); 399 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 400 towrite,(u_int32_t)fp->f_size)); 401 402 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 403 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 404 bp->b_data, &tmp, NULL); 405 406 if (error) { 407 printf("ntfs_strategy: ntfs_writeattr fail\n"); 408 bp->b_error = error; 409 bp->b_flags |= B_ERROR; 410 } 411 } 412 } 413 biodone(bp); 414 return (error); 415 } 416 417 static int 418 ntfs_write(ap) 419 struct vop_write_args /* { 420 struct vnode *a_vp; 421 struct uio *a_uio; 422 int a_ioflag; 423 struct ucred *a_cred; 424 } */ *ap; 425 { 426 register struct vnode *vp = ap->a_vp; 427 register struct fnode *fp = VTOF(vp); 428 register struct ntnode *ip = FTONT(fp); 429 struct uio *uio = ap->a_uio; 430 struct ntfsmount *ntmp = ip->i_mp; 431 u_int64_t towrite; 432 size_t written; 433 int error; 434 435 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)); 436 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 437 438 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 439 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 440 return (EFBIG); 441 } 442 443 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 444 445 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 446 447 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 448 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 449 #ifdef NTFS_DEBUG 450 if (error) 451 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 452 #endif 453 454 return (error); 455 } 456 457 int 458 ntfs_access(ap) 459 struct vop_access_args /* { 460 struct vnode *a_vp; 461 int a_mode; 462 struct ucred *a_cred; 463 struct proc *a_p; 464 } */ *ap; 465 { 466 struct vnode *vp = ap->a_vp; 467 struct ntnode *ip = VTONT(vp); 468 struct ucred *cred = ap->a_cred; 469 mode_t mask, mode = ap->a_mode; 470 register gid_t *gp; 471 int i; 472 #ifdef QUOTA 473 int error; 474 #endif 475 476 dprintf(("ntfs_access: %d\n",ip->i_number)); 477 478 /* 479 * Disallow write attempts on read-only file systems; 480 * unless the file is a socket, fifo, or a block or 481 * character device resident on the file system. 482 */ 483 if (mode & VWRITE) { 484 switch ((int)vp->v_type) { 485 case VDIR: 486 case VLNK: 487 case VREG: 488 if (vp->v_mount->mnt_flag & MNT_RDONLY) 489 return (EROFS); 490 #ifdef QUOTA 491 if (error = getinoquota(ip)) 492 return (error); 493 #endif 494 break; 495 } 496 } 497 498 /* Otherwise, user id 0 always gets access. */ 499 if (cred->cr_uid == 0) 500 return (0); 501 502 mask = 0; 503 504 /* Otherwise, check the owner. */ 505 if (cred->cr_uid == ip->i_mp->ntm_uid) { 506 if (mode & VEXEC) 507 mask |= S_IXUSR; 508 if (mode & VREAD) 509 mask |= S_IRUSR; 510 if (mode & VWRITE) 511 mask |= S_IWUSR; 512 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 513 } 514 515 /* Otherwise, check the groups. */ 516 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 517 if (ip->i_mp->ntm_gid == *gp) { 518 if (mode & VEXEC) 519 mask |= S_IXGRP; 520 if (mode & VREAD) 521 mask |= S_IRGRP; 522 if (mode & VWRITE) 523 mask |= S_IWGRP; 524 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 525 } 526 527 /* Otherwise, check everyone else. */ 528 if (mode & VEXEC) 529 mask |= S_IXOTH; 530 if (mode & VREAD) 531 mask |= S_IROTH; 532 if (mode & VWRITE) 533 mask |= S_IWOTH; 534 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 535 } 536 537 /* 538 * Open called. 539 * 540 * Nothing to do. 541 */ 542 /* ARGSUSED */ 543 static int 544 ntfs_open(ap) 545 struct vop_open_args /* { 546 struct vnode *a_vp; 547 int a_mode; 548 struct ucred *a_cred; 549 struct proc *a_p; 550 } */ *ap; 551 { 552 #if NTFS_DEBUG 553 register struct vnode *vp = ap->a_vp; 554 register struct ntnode *ip = VTONT(vp); 555 556 printf("ntfs_open: %d\n",ip->i_number); 557 #endif 558 559 /* 560 * Files marked append-only must be opened for appending. 561 */ 562 563 return (0); 564 } 565 566 /* 567 * Close called. 568 * 569 * Update the times on the inode. 570 */ 571 /* ARGSUSED */ 572 static int 573 ntfs_close(ap) 574 struct vop_close_args /* { 575 struct vnode *a_vp; 576 int a_fflag; 577 struct ucred *a_cred; 578 struct proc *a_p; 579 } */ *ap; 580 { 581 #if NTFS_DEBUG 582 register struct vnode *vp = ap->a_vp; 583 register struct ntnode *ip = VTONT(vp); 584 585 printf("ntfs_close: %d\n",ip->i_number); 586 #endif 587 588 return (0); 589 } 590 591 int 592 ntfs_readdir(ap) 593 struct vop_readdir_args /* { 594 struct vnode *a_vp; 595 struct uio *a_uio; 596 struct ucred *a_cred; 597 int *a_ncookies; 598 u_int **cookies; 599 } */ *ap; 600 { 601 register struct vnode *vp = ap->a_vp; 602 register struct fnode *fp = VTOF(vp); 603 register struct ntnode *ip = FTONT(fp); 604 struct uio *uio = ap->a_uio; 605 struct ntfsmount *ntmp = ip->i_mp; 606 int i, error = 0; 607 u_int32_t faked = 0, num; 608 int ncookies = 0; 609 struct dirent cde; 610 off_t off; 611 612 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 613 614 off = uio->uio_offset; 615 616 /* Simulate . in every dir except ROOT */ 617 if( ip->i_number != NTFS_ROOTINO ) { 618 struct dirent dot = { NTFS_ROOTINO, 619 sizeof(struct dirent), DT_DIR, 1, "." }; 620 621 if( uio->uio_offset < sizeof(struct dirent) ) { 622 dot.d_fileno = ip->i_number; 623 error = uiomove((char *)&dot,sizeof(struct dirent),uio); 624 if(error) 625 return (error); 626 627 ncookies ++; 628 } 629 } 630 631 /* Simulate .. in every dir including ROOT */ 632 if( uio->uio_offset < 2 * sizeof(struct dirent) ) { 633 struct dirent dotdot = { NTFS_ROOTINO, 634 sizeof(struct dirent), DT_DIR, 2, ".." }; 635 636 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio); 637 if(error) 638 return (error); 639 640 ncookies ++; 641 } 642 643 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 644 num = uio->uio_offset / sizeof(struct dirent) - faked; 645 646 while( uio->uio_resid >= sizeof(struct dirent) ) { 647 struct attr_indexentry *iep; 648 649 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 650 651 if(error) 652 return (error); 653 654 if( NULL == iep ) 655 break; 656 657 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 658 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 659 { 660 if(!ntfs_isnamepermitted(ntmp,iep)) 661 continue; 662 663 for(i=0; i<iep->ie_fnamelen; i++) { 664 cde.d_name[i] = NTFS_U28(iep->ie_fname[i]); 665 } 666 cde.d_name[i] = '\0'; 667 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 668 num, cde.d_name, iep->ie_fnametype, 669 iep->ie_flag)); 670 cde.d_namlen = iep->ie_fnamelen; 671 cde.d_fileno = iep->ie_number; 672 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 673 cde.d_reclen = sizeof(struct dirent); 674 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg")); 675 676 error = uiomove((char *)&cde, sizeof(struct dirent), uio); 677 if(error) 678 return (error); 679 680 ncookies++; 681 num++; 682 } 683 } 684 685 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 686 ncookies,(u_int)(uio->uio_offset - off))); 687 dprintf(("ntfs_readdir: off: %d resid: %d\n", 688 (u_int32_t)uio->uio_offset,uio->uio_resid)); 689 690 if (!error && ap->a_ncookies != NULL) { 691 struct dirent* dpStart; 692 struct dirent* dp; 693 #if defined(__FreeBSD__) 694 u_long *cookies; 695 u_long *cookiep; 696 #else /* defined(__NetBSD__) */ 697 off_t *cookies; 698 off_t *cookiep; 699 #endif 700 701 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 702 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 703 panic("ntfs_readdir: unexpected uio from NFS server"); 704 dpStart = (struct dirent *) 705 ((caddr_t)uio->uio_iov->iov_base - 706 (uio->uio_offset - off)); 707 #if defined(__FreeBSD__) 708 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 709 M_TEMP, M_WAITOK); 710 #else /* defined(__NetBSD__) */ 711 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 712 M_TEMP, M_WAITOK); 713 #endif 714 for (dp = dpStart, cookiep = cookies, i=0; 715 i < ncookies; 716 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 717 off += dp->d_reclen; 718 *cookiep++ = (u_int) off; 719 } 720 *ap->a_ncookies = ncookies; 721 *ap->a_cookies = cookies; 722 } 723 /* 724 if (ap->a_eofflag) 725 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 726 */ 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 register struct vnode *dvp = ap->a_dvp; 739 register 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 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 788 if(error) 789 return (error); 790 791 VOP__UNLOCK(dvp,0,cnp->cn_proc); 792 cnp->cn_flags |= PDIRUNLOCK; 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,cnp->cn_proc)==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, cnp->cn_proc); 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)) 824 VOP__UNLOCK(dvp, 0, cnp->cn_proc); 825 } 826 827 if (cnp->cn_flags & MAKEENTRY) 828 cache_enter(dvp, *ap->a_vpp, cnp); 829 830 return (error); 831 } 832 833 #if defined(__FreeBSD__) 834 /* 835 * Flush the blocks of a file to disk. 836 * 837 * This function is worthless for vnodes that represent directories. Maybe we 838 * could just do a sync if they try an fsync on a directory file. 839 */ 840 static int 841 ntfs_fsync(ap) 842 struct vop_fsync_args /* { 843 struct vnode *a_vp; 844 struct ucred *a_cred; 845 int a_waitfor; 846 struct proc *a_p; 847 } */ *ap; 848 { 849 return (0); 850 } 851 #endif 852 853 /* 854 * Return POSIX pathconf information applicable to NTFS filesystem 855 */ 856 int 857 ntfs_pathconf(v) 858 void *v; 859 { 860 struct vop_pathconf_args /* { 861 struct vnode *a_vp; 862 int a_name; 863 register_t *a_retval; 864 } */ *ap = v; 865 866 switch (ap->a_name) { 867 case _PC_LINK_MAX: 868 *ap->a_retval = 1; 869 return (0); 870 case _PC_NAME_MAX: 871 *ap->a_retval = NTFS_MAXFILENAME; 872 return (0); 873 case _PC_PATH_MAX: 874 *ap->a_retval = PATH_MAX; 875 return (0); 876 case _PC_CHOWN_RESTRICTED: 877 *ap->a_retval = 1; 878 return (0); 879 case _PC_NO_TRUNC: 880 *ap->a_retval = 0; 881 return (0); 882 #if defined(__NetBSD__) 883 case _PC_SYNC_IO: 884 *ap->a_retval = 1; 885 return (0); 886 case _PC_FILESIZEBITS: 887 *ap->a_retval = 64; 888 return (0); 889 #endif 890 default: 891 return (EINVAL); 892 } 893 /* NOTREACHED */ 894 } 895 896 /* 897 * Global vfs data structures 898 */ 899 vop_t **ntfs_vnodeop_p; 900 #if defined(__FreeBSD__) 901 static 902 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 903 { &vop_default_desc, (vop_t *)vop_defaultop }, 904 905 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 906 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 907 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 908 { &vop_print_desc, (vop_t *)ntfs_print }, 909 { &vop_pathconf_desc, ntfs_pathconf }, 910 911 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 912 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 913 { &vop_lock_desc, (vop_t *)vop_stdlock }, 914 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 915 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 916 917 { &vop_access_desc, (vop_t *)ntfs_access }, 918 { &vop_close_desc, (vop_t *)ntfs_close }, 919 { &vop_open_desc, (vop_t *)ntfs_open }, 920 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 921 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 922 923 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 924 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 925 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 926 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 927 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 928 { &vop_read_desc, (vop_t *)ntfs_read }, 929 { &vop_write_desc, (vop_t *)ntfs_write }, 930 931 { NULL, NULL } 932 }; 933 934 static 935 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 936 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 937 938 VNODEOP_SET(ntfs_vnodeop_opv_desc); 939 940 #else /* !FreeBSD */ 941 942 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 943 { &vop_default_desc, (vop_t *) ntfs_bypass }, 944 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 945 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 946 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 947 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 948 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 949 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 950 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 951 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 952 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 953 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 954 { &vop_lease_desc, genfs_lease_check }, /* lease */ 955 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 956 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 957 { &vop_poll_desc, genfs_poll }, /* poll */ 958 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 959 { &vop_mmap_desc, genfs_eopnotsupp }, /* mmap */ 960 { &vop_fsync_desc, genfs_fsync }, /* fsync */ 961 { &vop_seek_desc, genfs_seek }, /* seek */ 962 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 963 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 964 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 965 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 966 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 967 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 968 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 969 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 970 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 971 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 972 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 973 { &vop_lock_desc, genfs_lock }, /* lock */ 974 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 975 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 976 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 977 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 978 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 979 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 980 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 981 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */ 982 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */ 983 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */ 984 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */ 985 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */ 986 { &vop_update_desc, genfs_eopnotsupp }, /* update */ 987 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 988 { (struct vnodeop_desc *)NULL, (int (*) __P((void *)))NULL } 989 }; 990 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 991 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 992 993 #endif 994