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sys/fs/ntfs/ntfs_vnops.c
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1 /* $NetBSD: ntfs_vnops.c,v 1.18 2004/02/29 11:08:55 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. 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 1.18 2004/02/29 11:08:55 jdolecek 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 extern int prtactive; 95 96 #if defined(__FreeBSD__) 97 int 98 ntfs_getpages(ap) 99 struct vop_getpages_args *ap; 100 { 101 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 102 ap->a_reqpage); 103 } 104 105 int 106 ntfs_putpages(ap) 107 struct vop_putpages_args *ap; 108 { 109 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 110 ap->a_sync, ap->a_rtvals); 111 } 112 #endif 113 114 /* 115 * This is a noop, simply returning what one has been given. 116 */ 117 int 118 ntfs_bmap(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 (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 (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 vnode *a_vp; 325 struct buf *a_bp; 326 } */ *ap; 327 { 328 struct buf *bp = ap->a_bp; 329 struct vnode *vp = ap->a_vp; 330 struct fnode *fp = VTOF(vp); 331 struct ntnode *ip = FTONT(fp); 332 struct ntfsmount *ntmp = ip->i_mp; 333 int error; 334 335 #ifdef __FreeBSD__ 336 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 337 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 338 (u_int32_t)bp->b_lblkno)); 339 #else 340 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 341 (u_int32_t)bp->b_blkno, 342 (u_int32_t)bp->b_lblkno)); 343 #endif 344 345 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 346 (u_int32_t)bp->b_bcount,bp->b_flags)); 347 348 if (bp->b_flags & B_READ) { 349 u_int32_t toread; 350 351 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 352 clrbuf(bp); 353 error = 0; 354 } else { 355 toread = min(bp->b_bcount, 356 fp->f_size-ntfs_cntob(bp->b_blkno)); 357 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 358 toread,(u_int32_t)fp->f_size)); 359 360 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 361 fp->f_attrname, ntfs_cntob(bp->b_blkno), 362 toread, bp->b_data, NULL); 363 364 if (error) { 365 printf("ntfs_strategy: ntfs_readattr failed\n"); 366 bp->b_error = error; 367 bp->b_flags |= B_ERROR; 368 } 369 370 bzero(bp->b_data + toread, bp->b_bcount - toread); 371 } 372 } else { 373 size_t tmp; 374 u_int32_t towrite; 375 376 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 377 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 378 bp->b_error = error = EFBIG; 379 bp->b_flags |= B_ERROR; 380 } else { 381 towrite = min(bp->b_bcount, 382 fp->f_size-ntfs_cntob(bp->b_blkno)); 383 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 384 towrite,(u_int32_t)fp->f_size)); 385 386 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 387 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 388 bp->b_data, &tmp, NULL); 389 390 if (error) { 391 printf("ntfs_strategy: ntfs_writeattr fail\n"); 392 bp->b_error = error; 393 bp->b_flags |= B_ERROR; 394 } 395 } 396 } 397 biodone(bp); 398 return (error); 399 } 400 401 static int 402 ntfs_write(ap) 403 struct vop_write_args /* { 404 struct vnode *a_vp; 405 struct uio *a_uio; 406 int a_ioflag; 407 struct ucred *a_cred; 408 } */ *ap; 409 { 410 struct vnode *vp = ap->a_vp; 411 struct fnode *fp = VTOF(vp); 412 struct ntnode *ip = FTONT(fp); 413 struct uio *uio = ap->a_uio; 414 struct ntfsmount *ntmp = ip->i_mp; 415 u_int64_t towrite; 416 size_t written; 417 int error; 418 419 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)); 420 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 421 422 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 423 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 424 return (EFBIG); 425 } 426 427 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 428 429 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 430 431 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 432 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 433 #ifdef NTFS_DEBUG 434 if (error) 435 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 436 #endif 437 438 return (error); 439 } 440 441 int 442 ntfs_access(ap) 443 struct vop_access_args /* { 444 struct vnode *a_vp; 445 int a_mode; 446 struct ucred *a_cred; 447 struct proc *a_p; 448 } */ *ap; 449 { 450 struct vnode *vp = ap->a_vp; 451 struct ntnode *ip = VTONT(vp); 452 struct ucred *cred = ap->a_cred; 453 mode_t mask, mode = ap->a_mode; 454 gid_t *gp; 455 int i; 456 457 dprintf(("ntfs_access: %d\n",ip->i_number)); 458 459 /* 460 * Disallow write attempts on read-only file systems; 461 * unless the file is a socket, fifo, or a block or 462 * character device resident on the file system. 463 */ 464 if (mode & VWRITE) { 465 switch ((int)vp->v_type) { 466 case VDIR: 467 case VLNK: 468 case VREG: 469 if (vp->v_mount->mnt_flag & MNT_RDONLY) 470 return (EROFS); 471 break; 472 } 473 } 474 475 /* Otherwise, user id 0 always gets access. */ 476 if (cred->cr_uid == 0) 477 return (0); 478 479 mask = 0; 480 481 /* Otherwise, check the owner. */ 482 if (cred->cr_uid == ip->i_mp->ntm_uid) { 483 if (mode & VEXEC) 484 mask |= S_IXUSR; 485 if (mode & VREAD) 486 mask |= S_IRUSR; 487 if (mode & VWRITE) 488 mask |= S_IWUSR; 489 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 490 } 491 492 /* Otherwise, check the groups. */ 493 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 494 if (ip->i_mp->ntm_gid == *gp) { 495 if (mode & VEXEC) 496 mask |= S_IXGRP; 497 if (mode & VREAD) 498 mask |= S_IRGRP; 499 if (mode & VWRITE) 500 mask |= S_IWGRP; 501 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 502 } 503 504 /* Otherwise, check everyone else. */ 505 if (mode & VEXEC) 506 mask |= S_IXOTH; 507 if (mode & VREAD) 508 mask |= S_IROTH; 509 if (mode & VWRITE) 510 mask |= S_IWOTH; 511 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 512 } 513 514 /* 515 * Open called. 516 * 517 * Nothing to do. 518 */ 519 /* ARGSUSED */ 520 static int 521 ntfs_open(ap) 522 struct vop_open_args /* { 523 struct vnode *a_vp; 524 int a_mode; 525 struct ucred *a_cred; 526 struct proc *a_p; 527 } */ *ap; 528 { 529 #if NTFS_DEBUG 530 struct vnode *vp = ap->a_vp; 531 struct ntnode *ip = VTONT(vp); 532 533 printf("ntfs_open: %d\n",ip->i_number); 534 #endif 535 536 /* 537 * Files marked append-only must be opened for appending. 538 */ 539 540 return (0); 541 } 542 543 /* 544 * Close called. 545 * 546 * Update the times on the inode. 547 */ 548 /* ARGSUSED */ 549 static int 550 ntfs_close(ap) 551 struct vop_close_args /* { 552 struct vnode *a_vp; 553 int a_fflag; 554 struct ucred *a_cred; 555 struct proc *a_p; 556 } */ *ap; 557 { 558 #if NTFS_DEBUG 559 struct vnode *vp = ap->a_vp; 560 struct ntnode *ip = VTONT(vp); 561 562 printf("ntfs_close: %d\n",ip->i_number); 563 #endif 564 565 return (0); 566 } 567 568 int 569 ntfs_readdir(ap) 570 struct vop_readdir_args /* { 571 struct vnode *a_vp; 572 struct uio *a_uio; 573 struct ucred *a_cred; 574 int *a_ncookies; 575 u_int **cookies; 576 } */ *ap; 577 { 578 struct vnode *vp = ap->a_vp; 579 struct fnode *fp = VTOF(vp); 580 struct ntnode *ip = FTONT(fp); 581 struct uio *uio = ap->a_uio; 582 struct ntfsmount *ntmp = ip->i_mp; 583 int i, error = 0; 584 u_int32_t faked = 0, num; 585 int ncookies = 0; 586 struct dirent *cde; 587 off_t off; 588 589 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 590 591 off = uio->uio_offset; 592 593 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK); 594 595 /* Simulate . in every dir except ROOT */ 596 if (ip->i_number != NTFS_ROOTINO 597 && uio->uio_offset < sizeof(struct dirent)) { 598 cde->d_fileno = ip->i_number; 599 cde->d_reclen = sizeof(struct dirent); 600 cde->d_type = DT_DIR; 601 cde->d_namlen = 1; 602 strncpy(cde->d_name, ".", 2); 603 error = uiomove((void *)cde, sizeof(struct dirent), uio); 604 if (error) 605 goto out; 606 607 ncookies++; 608 } 609 610 /* Simulate .. in every dir including ROOT */ 611 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 612 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 613 cde->d_reclen = sizeof(struct dirent); 614 cde->d_type = DT_DIR; 615 cde->d_namlen = 2; 616 strncpy(cde->d_name, "..", 3); 617 618 error = uiomove((void *) cde, sizeof(struct dirent), uio); 619 if (error) 620 goto out; 621 622 ncookies++; 623 } 624 625 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 626 num = uio->uio_offset / sizeof(struct dirent) - faked; 627 628 while (uio->uio_resid >= sizeof(struct dirent)) { 629 struct attr_indexentry *iep; 630 char *fname; 631 size_t remains; 632 int sz; 633 634 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 635 if (error) 636 goto out; 637 638 if (NULL == iep) 639 break; 640 641 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 642 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 643 { 644 if(!ntfs_isnamepermitted(ntmp,iep)) 645 continue; 646 647 remains = sizeof(cde->d_name) - 1; 648 fname = cde->d_name; 649 for(i=0; i<iep->ie_fnamelen; i++) { 650 sz = (*ntmp->ntm_wput)(fname, remains, 651 iep->ie_fname[i]); 652 fname += sz; 653 remains -= sz; 654 } 655 *fname = '\0'; 656 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 657 num, cde->d_name, iep->ie_fnametype, 658 iep->ie_flag)); 659 cde->d_namlen = fname - (char *) cde->d_name; 660 cde->d_fileno = iep->ie_number; 661 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 662 cde->d_reclen = sizeof(struct dirent); 663 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 664 665 error = uiomove((void *)cde, sizeof(struct dirent), uio); 666 if (error) 667 goto out; 668 669 ncookies++; 670 num++; 671 } 672 } 673 674 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 675 ncookies,(u_int)(uio->uio_offset - off))); 676 dprintf(("ntfs_readdir: off: %d resid: %d\n", 677 (u_int32_t)uio->uio_offset,uio->uio_resid)); 678 679 if (!error && ap->a_ncookies != NULL) { 680 struct dirent* dpStart; 681 struct dirent* dp; 682 #if defined(__FreeBSD__) 683 u_long *cookies; 684 u_long *cookiep; 685 #else /* defined(__NetBSD__) */ 686 off_t *cookies; 687 off_t *cookiep; 688 #endif 689 690 dprintf(("ntfs_readdir: %d cookies\n",ncookies)); 691 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 692 panic("ntfs_readdir: unexpected uio from NFS server"); 693 dpStart = (struct dirent *) 694 ((caddr_t)uio->uio_iov->iov_base - 695 (uio->uio_offset - off)); 696 #if defined(__FreeBSD__) 697 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 698 M_TEMP, M_WAITOK); 699 #else /* defined(__NetBSD__) */ 700 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 701 #endif 702 for (dp = dpStart, cookiep = cookies, i=0; 703 i < ncookies; 704 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 705 off += dp->d_reclen; 706 *cookiep++ = (u_int) off; 707 } 708 *ap->a_ncookies = ncookies; 709 *ap->a_cookies = cookies; 710 } 711 /* 712 if (ap->a_eofflag) 713 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 714 */ 715 out: 716 FREE(cde, M_TEMP); 717 return (error); 718 } 719 720 int 721 ntfs_lookup(ap) 722 struct vop_lookup_args /* { 723 struct vnode *a_dvp; 724 struct vnode **a_vpp; 725 struct componentname *a_cnp; 726 } */ *ap; 727 { 728 struct vnode *dvp = ap->a_dvp; 729 struct ntnode *dip = VTONT(dvp); 730 struct ntfsmount *ntmp = dip->i_mp; 731 struct componentname *cnp = ap->a_cnp; 732 struct ucred *cred = cnp->cn_cred; 733 int error; 734 int lockparent = cnp->cn_flags & LOCKPARENT; 735 #if NTFS_DEBUG 736 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); 737 #endif 738 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 739 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 740 dip->i_number, lockparent, wantparent)); 741 742 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc); 743 if(error) 744 return (error); 745 746 if ((cnp->cn_flags & ISLASTCN) && 747 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 748 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 749 return (EROFS); 750 751 #ifdef __NetBSD__ 752 /* 753 * We now have a segment name to search for, and a directory 754 * to search. 755 * 756 * Before tediously performing a linear scan of the directory, 757 * check the name cache to see if the directory/name pair 758 * we are looking for is known already. 759 */ 760 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 761 return (error); 762 #endif 763 764 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 765 dprintf(("ntfs_lookup: faking . directory in %d\n", 766 dip->i_number)); 767 768 VREF(dvp); 769 *ap->a_vpp = dvp; 770 error = 0; 771 } else if (cnp->cn_flags & ISDOTDOT) { 772 struct ntvattr *vap; 773 774 dprintf(("ntfs_lookup: faking .. directory in %d\n", 775 dip->i_number)); 776 777 VOP_UNLOCK(dvp, 0); 778 cnp->cn_flags |= PDIRUNLOCK; 779 780 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 781 if(error) 782 return (error); 783 784 dprintf(("ntfs_lookup: parentdir: %d\n", 785 vap->va_a_name->n_pnumber)); 786 error = VFS_VGET(ntmp->ntm_mountp, 787 vap->va_a_name->n_pnumber,ap->a_vpp); 788 ntfs_ntvattrrele(vap); 789 if (error) { 790 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 791 cnp->cn_flags &= ~PDIRUNLOCK; 792 return (error); 793 } 794 795 if (lockparent && (cnp->cn_flags & ISLASTCN)) { 796 error = vn_lock(dvp, LK_EXCLUSIVE); 797 if (error) { 798 vput( *(ap->a_vpp) ); 799 return (error); 800 } 801 cnp->cn_flags &= ~PDIRUNLOCK; 802 } 803 } else { 804 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 805 if (error) { 806 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 807 return (error); 808 } 809 810 dprintf(("ntfs_lookup: found ino: %d\n", 811 VTONT(*ap->a_vpp)->i_number)); 812 813 if(!lockparent || (cnp->cn_flags & ISLASTCN) == 0) { 814 VOP_UNLOCK(dvp, 0); 815 cnp->cn_flags |= PDIRUNLOCK; 816 } 817 } 818 819 if (cnp->cn_flags & MAKEENTRY) 820 cache_enter(dvp, *ap->a_vpp, cnp); 821 822 return (error); 823 } 824 825 #if defined(__FreeBSD__) 826 /* 827 * Flush the blocks of a file to disk. 828 * 829 * This function is worthless for vnodes that represent directories. Maybe we 830 * could just do a sync if they try an fsync on a directory file. 831 */ 832 static int 833 ntfs_fsync(ap) 834 struct vop_fsync_args /* { 835 struct vnode *a_vp; 836 struct ucred *a_cred; 837 int a_waitfor; 838 off_t offlo; 839 off_t offhi; 840 struct proc *a_p; 841 } */ *ap; 842 { 843 return (0); 844 } 845 #endif 846 847 /* 848 * Return POSIX pathconf information applicable to NTFS filesystem 849 */ 850 static int 851 ntfs_pathconf(v) 852 void *v; 853 { 854 struct vop_pathconf_args /* { 855 struct vnode *a_vp; 856 int a_name; 857 register_t *a_retval; 858 } */ *ap = v; 859 860 switch (ap->a_name) { 861 case _PC_LINK_MAX: 862 *ap->a_retval = 1; 863 return (0); 864 case _PC_NAME_MAX: 865 *ap->a_retval = NTFS_MAXFILENAME; 866 return (0); 867 case _PC_PATH_MAX: 868 *ap->a_retval = PATH_MAX; 869 return (0); 870 case _PC_CHOWN_RESTRICTED: 871 *ap->a_retval = 1; 872 return (0); 873 case _PC_NO_TRUNC: 874 *ap->a_retval = 0; 875 return (0); 876 case _PC_SYNC_IO: 877 *ap->a_retval = 1; 878 return (0); 879 case _PC_FILESIZEBITS: 880 *ap->a_retval = 64; 881 return (0); 882 default: 883 return (EINVAL); 884 } 885 /* NOTREACHED */ 886 } 887 888 /* 889 * Global vfs data structures 890 */ 891 vop_t **ntfs_vnodeop_p; 892 #if defined(__FreeBSD__) 893 static 894 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 895 { &vop_default_desc, (vop_t *)ntfs_bypass }, 896 897 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 898 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 899 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 900 { &vop_print_desc, (vop_t *)ntfs_print }, 901 { &vop_pathconf_desc, ntfs_pathconf }, 902 903 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 904 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 905 { &vop_lock_desc, (vop_t *)vop_stdlock }, 906 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 907 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 908 909 { &vop_access_desc, (vop_t *)ntfs_access }, 910 { &vop_close_desc, (vop_t *)ntfs_close }, 911 { &vop_open_desc, (vop_t *)ntfs_open }, 912 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 913 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 914 915 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 916 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 917 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 918 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 919 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 920 { &vop_read_desc, (vop_t *)ntfs_read }, 921 { &vop_write_desc, (vop_t *)ntfs_write }, 922 923 { NULL, NULL } 924 }; 925 926 static 927 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 928 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 929 930 VNODEOP_SET(ntfs_vnodeop_opv_desc); 931 932 #else /* !FreeBSD */ 933 934 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 935 { &vop_default_desc, (vop_t *) ntfs_bypass }, 936 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 937 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 938 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 939 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 940 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 941 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 942 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 943 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 944 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 945 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 946 { &vop_lease_desc, genfs_lease_check }, /* lease */ 947 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 948 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 949 { &vop_poll_desc, genfs_poll }, /* poll */ 950 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 951 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 952 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 953 { &vop_fsync_desc, genfs_fsync }, /* fsync */ 954 { &vop_seek_desc, genfs_seek }, /* seek */ 955 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 956 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 957 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 958 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 959 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 960 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 961 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 962 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 963 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 964 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 965 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 966 { &vop_lock_desc, genfs_lock }, /* lock */ 967 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 968 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 969 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 970 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 971 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 972 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 973 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 974 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */ 975 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */ 976 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */ 977 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */ 978 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */ 979 { &vop_update_desc, genfs_nullop }, /* update */ 980 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 981 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 982 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 983 { NULL, NULL } 984 }; 985 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 986 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 987 988 #endif
Cache object: 78e750e31af71de35f3b7766002460a6
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