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sys/fs/ntfs/ntfs_vnops.c
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1 /* $NetBSD: ntfs_vnops.c,v 1.30.2.1 2007/02/17 23:27:44 tron 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 1.30.2.1 2007/02/17 23:27:44 tron 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 #include <sys/kauth.h> 53 54 #if !defined(__NetBSD__) 55 #include <vm/vm.h> 56 #endif 57 58 #if defined(__FreeBSD__) 59 #include <vm/vnode_pager.h> 60 #endif 61 62 #include <sys/sysctl.h> 63 64 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(void *); 74 static int ntfs_read(void *); 75 static int ntfs_write(void *); 76 static int ntfs_getattr(void *); 77 static int ntfs_inactive(void *); 78 static int ntfs_print(void *); 79 static int ntfs_reclaim(void *); 80 static int ntfs_strategy(void *); 81 static int ntfs_access(void *); 82 static int ntfs_open(void *); 83 static int ntfs_close(void *); 84 static int ntfs_readdir(void *); 85 static int ntfs_lookup(void *); 86 static int ntfs_bmap(void *); 87 #if defined(__FreeBSD__) 88 static int ntfs_getpages(struct vop_getpages_args *); 89 static int ntfs_putpages(struct vop_putpages_args *); 90 #endif 91 static int ntfs_fsync(void *); 92 static int ntfs_pathconf(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(void *v) 119 { 120 struct vop_bmap_args /* { 121 struct vnode *a_vp; 122 daddr_t a_bn; 123 struct vnode **a_vpp; 124 daddr_t *a_bnp; 125 int *a_runp; 126 int *a_runb; 127 } */ *ap = v; 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(void *v) 144 { 145 struct vop_read_args /* { 146 struct vnode *a_vp; 147 struct uio *a_uio; 148 int a_ioflag; 149 kauth_cred_t a_cred; 150 } */ *ap = v; 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: %llu, off: %qd resid: %qd\n", 160 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 161 (long long)uio->uio_resid)); 162 163 dprintf(("ntfs_read: filesize: %qu",(long long)fp->f_size)); 164 165 /* don't allow reading after end of file */ 166 if (uio->uio_offset > fp->f_size) 167 toread = 0; 168 else 169 toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset ); 170 171 dprintf((", toread: %qu\n",(long long)toread)); 172 173 if (toread == 0) 174 return (0); 175 176 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 177 fp->f_attrname, uio->uio_offset, toread, NULL, uio); 178 if (error) { 179 printf("ntfs_read: ntfs_readattr failed: %d\n",error); 180 return (error); 181 } 182 183 return (0); 184 } 185 186 static int 187 ntfs_bypass(void *v) 188 { 189 struct vop_generic_args /* { 190 struct vnodeop_desc *a_desc; 191 <other random data follows, presumably> 192 } */ *ap __unused = v; 193 int error = ENOTTY; 194 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 195 return (error); 196 } 197 198 199 static int 200 ntfs_getattr(void *v) 201 { 202 struct vop_getattr_args /* { 203 struct vnode *a_vp; 204 struct vattr *a_vap; 205 kauth_cred_t a_cred; 206 struct lwp *a_l; 207 } */ *ap = v; 208 struct vnode *vp = ap->a_vp; 209 struct fnode *fp = VTOF(vp); 210 struct ntnode *ip = FTONT(fp); 211 struct vattr *vap = ap->a_vap; 212 213 dprintf(("ntfs_getattr: %llu, flags: %d\n", 214 (unsigned long long)ip->i_number, ip->i_flag)); 215 216 #if defined(__FreeBSD__) 217 vap->va_fsid = dev2udev(ip->i_dev); 218 #else /* NetBSD */ 219 vap->va_fsid = ip->i_dev; 220 #endif 221 vap->va_fileid = ip->i_number; 222 vap->va_mode = ip->i_mp->ntm_mode; 223 vap->va_nlink = ip->i_nlink; 224 vap->va_uid = ip->i_mp->ntm_uid; 225 vap->va_gid = ip->i_mp->ntm_gid; 226 vap->va_rdev = 0; /* XXX UNODEV ? */ 227 vap->va_size = fp->f_size; 228 vap->va_bytes = fp->f_allocated; 229 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 230 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 231 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 232 vap->va_flags = ip->i_flag; 233 vap->va_gen = 0; 234 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 235 vap->va_type = vp->v_type; 236 vap->va_filerev = 0; 237 return (0); 238 } 239 240 241 /* 242 * Last reference to an ntnode. If necessary, write or delete it. 243 */ 244 int 245 ntfs_inactive(void *v) 246 { 247 struct vop_inactive_args /* { 248 struct vnode *a_vp; 249 } */ *ap = v; 250 struct vnode *vp = ap->a_vp; 251 #ifdef NTFS_DEBUG 252 struct ntnode *ip = VTONT(vp); 253 #endif 254 255 dprintf(("ntfs_inactive: vnode: %p, ntnode: %llu\n", vp, 256 (unsigned long long)ip->i_number)); 257 258 if (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(void *v) 274 { 275 struct vop_reclaim_args /* { 276 struct vnode *a_vp; 277 } */ *ap = v; 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: %llu\n", vp, 284 (unsigned long long)ip->i_number)); 285 286 if (prtactive && vp->v_usecount != 0) 287 vprint("ntfs_reclaim: pushing active", vp); 288 289 if ((error = ntfs_ntget(ip)) != 0) 290 return (error); 291 292 /* Purge old data structures associated with the inode. */ 293 cache_purge(vp); 294 if (ip->i_devvp) { 295 vrele(ip->i_devvp); 296 ip->i_devvp = NULL; 297 } 298 299 ntfs_frele(fp); 300 ntfs_ntput(ip); 301 vp->v_data = NULL; 302 303 return (0); 304 } 305 306 static int 307 ntfs_print(void *v) 308 { 309 struct vop_print_args /* { 310 struct vnode *a_vp; 311 } */ *ap = v; 312 struct ntnode *ip = VTONT(ap->a_vp); 313 314 printf("tag VT_NTFS, ino %llu, flag %#x, usecount %d, nlink %ld\n", 315 (unsigned long long)ip->i_number, ip->i_flag, ip->i_usecount, 316 ip->i_nlink); 317 printf(" "); 318 lockmgr_printinfo(ap->a_vp->v_vnlock); 319 printf("\n"); 320 return (0); 321 } 322 323 /* 324 * Calculate the logical to physical mapping if not done already, 325 * then call the device strategy routine. 326 */ 327 int 328 ntfs_strategy(void *v) 329 { 330 struct vop_strategy_args /* { 331 struct vnode *a_vp; 332 struct buf *a_bp; 333 } */ *ap = v; 334 struct buf *bp = ap->a_bp; 335 struct vnode *vp = ap->a_vp; 336 struct fnode *fp = VTOF(vp); 337 struct ntnode *ip = FTONT(fp); 338 struct ntfsmount *ntmp = ip->i_mp; 339 int error; 340 341 #ifdef __FreeBSD__ 342 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 343 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 344 (u_int32_t)bp->b_lblkno)); 345 #else 346 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 347 (u_int32_t)bp->b_blkno, 348 (u_int32_t)bp->b_lblkno)); 349 #endif 350 351 dprintf(("strategy: bcount: %u flags: 0x%x\n", 352 (u_int32_t)bp->b_bcount,bp->b_flags)); 353 354 if (bp->b_flags & B_READ) { 355 u_int32_t toread; 356 357 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 358 clrbuf(bp); 359 error = 0; 360 } else { 361 toread = MIN(bp->b_bcount, 362 fp->f_size - ntfs_cntob(bp->b_blkno)); 363 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 364 toread,(u_int32_t)fp->f_size)); 365 366 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 367 fp->f_attrname, ntfs_cntob(bp->b_blkno), 368 toread, bp->b_data, NULL); 369 370 if (error) { 371 printf("ntfs_strategy: ntfs_readattr failed\n"); 372 bp->b_error = error; 373 bp->b_flags |= B_ERROR; 374 } 375 376 bzero(bp->b_data + toread, bp->b_bcount - toread); 377 } 378 } else { 379 size_t tmp; 380 u_int32_t towrite; 381 382 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 383 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 384 bp->b_error = error = EFBIG; 385 bp->b_flags |= B_ERROR; 386 } else { 387 towrite = MIN(bp->b_bcount, 388 fp->f_size - ntfs_cntob(bp->b_blkno)); 389 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 390 towrite,(u_int32_t)fp->f_size)); 391 392 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 393 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 394 bp->b_data, &tmp, NULL); 395 396 if (error) { 397 printf("ntfs_strategy: ntfs_writeattr fail\n"); 398 bp->b_error = error; 399 bp->b_flags |= B_ERROR; 400 } 401 } 402 } 403 biodone(bp); 404 return (error); 405 } 406 407 static int 408 ntfs_write(void *v) 409 { 410 struct vop_write_args /* { 411 struct vnode *a_vp; 412 struct uio *a_uio; 413 int a_ioflag; 414 kauth_cred_t a_cred; 415 } */ *ap = v; 416 struct vnode *vp = ap->a_vp; 417 struct fnode *fp = VTOF(vp); 418 struct ntnode *ip = FTONT(fp); 419 struct uio *uio = ap->a_uio; 420 struct ntfsmount *ntmp = ip->i_mp; 421 u_int64_t towrite; 422 size_t written; 423 int error; 424 425 dprintf(("ntfs_write: ino: %llu, off: %qd resid: %qd\n", 426 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 427 (long long)uio->uio_resid)); 428 dprintf(("ntfs_write: filesize: %qu",(long long)fp->f_size)); 429 430 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 431 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 432 return (EFBIG); 433 } 434 435 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 436 437 dprintf((", towrite: %qu\n",(long long)towrite)); 438 439 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 440 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 441 #ifdef NTFS_DEBUG 442 if (error) 443 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 444 #endif 445 446 return (error); 447 } 448 449 int 450 ntfs_access(void *v) 451 { 452 struct vop_access_args /* { 453 struct vnode *a_vp; 454 int a_mode; 455 kauth_cred_t a_cred; 456 struct lwp *a_l; 457 } */ *ap = v; 458 struct vnode *vp = ap->a_vp; 459 struct ntnode *ip = VTONT(vp); 460 kauth_cred_t cred = ap->a_cred; 461 mode_t mask, mode = ap->a_mode; 462 gid_t grp; 463 int i; 464 uint16_t ngroups; 465 466 dprintf(("ntfs_access: %llu\n", (unsigned long long)ip->i_number)); 467 468 /* 469 * Disallow write attempts on read-only file systems; 470 * unless the file is a socket, fifo, or a block or 471 * character device resident on the file system. 472 */ 473 if (mode & VWRITE) { 474 switch ((int)vp->v_type) { 475 case VDIR: 476 case VLNK: 477 case VREG: 478 if (vp->v_mount->mnt_flag & MNT_RDONLY) 479 return (EROFS); 480 break; 481 } 482 } 483 484 /* Otherwise, user id 0 always gets access. */ 485 if (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, NULL) == 0) 486 return (0); 487 488 mask = 0; 489 490 /* Otherwise, check the owner. */ 491 if (kauth_cred_geteuid(cred) == ip->i_mp->ntm_uid) { 492 if (mode & VEXEC) 493 mask |= S_IXUSR; 494 if (mode & VREAD) 495 mask |= S_IRUSR; 496 if (mode & VWRITE) 497 mask |= S_IWUSR; 498 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 499 } 500 501 /* Otherwise, check the groups. */ 502 ngroups = kauth_cred_ngroups(cred); 503 for (i = 0; i < ngroups; i++) { 504 grp = kauth_cred_group(cred, i); 505 if (ip->i_mp->ntm_gid == grp) { 506 if (mode & VEXEC) 507 mask |= S_IXGRP; 508 if (mode & VREAD) 509 mask |= S_IRGRP; 510 if (mode & VWRITE) 511 mask |= S_IWGRP; 512 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 513 } 514 } 515 516 /* Otherwise, check everyone else. */ 517 if (mode & VEXEC) 518 mask |= S_IXOTH; 519 if (mode & VREAD) 520 mask |= S_IROTH; 521 if (mode & VWRITE) 522 mask |= S_IWOTH; 523 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 524 } 525 526 /* 527 * Open called. 528 * 529 * Nothing to do. 530 */ 531 /* ARGSUSED */ 532 static int 533 ntfs_open(void *v) 534 { 535 struct vop_open_args /* { 536 struct vnode *a_vp; 537 int a_mode; 538 kauth_cred_t a_cred; 539 struct lwp *a_l; 540 } */ *ap __unused = v; 541 #ifdef NTFS_DEBUG 542 struct vnode *vp = ap->a_vp; 543 struct ntnode *ip = VTONT(vp); 544 545 printf("ntfs_open: %llu\n", (unsigned long long)ip->i_number); 546 #endif 547 548 /* 549 * Files marked append-only must be opened for appending. 550 */ 551 552 return (0); 553 } 554 555 /* 556 * Close called. 557 * 558 * Update the times on the inode. 559 */ 560 /* ARGSUSED */ 561 static int 562 ntfs_close(void *v) 563 { 564 struct vop_close_args /* { 565 struct vnode *a_vp; 566 int a_fflag; 567 kauth_cred_t a_cred; 568 struct lwp *a_l; 569 } */ *ap __unused = v; 570 #ifdef NTFS_DEBUG 571 struct vnode *vp = ap->a_vp; 572 struct ntnode *ip = VTONT(vp); 573 574 printf("ntfs_close: %llu\n", (unsigned long long)ip->i_number); 575 #endif 576 577 return (0); 578 } 579 580 int 581 ntfs_readdir(void *v) 582 { 583 struct vop_readdir_args /* { 584 struct vnode *a_vp; 585 struct uio *a_uio; 586 kauth_cred_t a_cred; 587 int *a_ncookies; 588 u_int **cookies; 589 } */ *ap = v; 590 struct vnode *vp = ap->a_vp; 591 struct fnode *fp = VTOF(vp); 592 struct ntnode *ip = FTONT(fp); 593 struct uio *uio = ap->a_uio; 594 struct ntfsmount *ntmp = ip->i_mp; 595 int i, error = 0; 596 u_int32_t faked = 0, num; 597 int ncookies = 0; 598 struct dirent *cde; 599 off_t off; 600 601 dprintf(("ntfs_readdir %llu off: %qd resid: %qd\n", 602 (unsigned long long)ip->i_number, (long long)uio->uio_offset, 603 (long long)uio->uio_resid)); 604 605 off = uio->uio_offset; 606 607 MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK); 608 609 /* Simulate . in every dir except ROOT */ 610 if (ip->i_number != NTFS_ROOTINO 611 && uio->uio_offset < sizeof(struct dirent)) { 612 cde->d_fileno = ip->i_number; 613 cde->d_reclen = sizeof(struct dirent); 614 cde->d_type = DT_DIR; 615 cde->d_namlen = 1; 616 strncpy(cde->d_name, ".", 2); 617 error = uiomove((void *)cde, sizeof(struct dirent), uio); 618 if (error) 619 goto out; 620 621 ncookies++; 622 } 623 624 /* Simulate .. in every dir including ROOT */ 625 if (uio->uio_offset < 2 * sizeof(struct dirent)) { 626 cde->d_fileno = NTFS_ROOTINO; /* XXX */ 627 cde->d_reclen = sizeof(struct dirent); 628 cde->d_type = DT_DIR; 629 cde->d_namlen = 2; 630 strncpy(cde->d_name, "..", 3); 631 632 error = uiomove((void *) cde, sizeof(struct dirent), uio); 633 if (error) 634 goto out; 635 636 ncookies++; 637 } 638 639 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 640 num = uio->uio_offset / sizeof(struct dirent) - faked; 641 642 while (uio->uio_resid >= sizeof(struct dirent)) { 643 struct attr_indexentry *iep; 644 char *fname; 645 size_t remains; 646 int sz; 647 648 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 649 if (error) 650 goto out; 651 652 if (NULL == iep) 653 break; 654 655 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 656 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 657 { 658 if(!ntfs_isnamepermitted(ntmp,iep)) 659 continue; 660 661 remains = sizeof(cde->d_name) - 1; 662 fname = cde->d_name; 663 for(i=0; i<iep->ie_fnamelen; i++) { 664 sz = (*ntmp->ntm_wput)(fname, remains, 665 iep->ie_fname[i]); 666 fname += sz; 667 remains -= sz; 668 } 669 *fname = '\0'; 670 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 671 num, cde->d_name, iep->ie_fnametype, 672 iep->ie_flag)); 673 cde->d_namlen = fname - (char *) cde->d_name; 674 cde->d_fileno = iep->ie_number; 675 cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 676 cde->d_reclen = sizeof(struct dirent); 677 dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg")); 678 679 error = uiomove((void *)cde, sizeof(struct dirent), uio); 680 if (error) 681 goto out; 682 683 ncookies++; 684 num++; 685 } 686 } 687 688 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 689 ncookies,(u_int)(uio->uio_offset - off))); 690 dprintf(("ntfs_readdir: off: %qd resid: %qu\n", 691 (long long)uio->uio_offset,(long long)uio->uio_resid)); 692 693 if (!error && ap->a_ncookies != NULL) { 694 struct dirent* dpStart; 695 struct dirent* dp; 696 #if defined(__FreeBSD__) 697 u_long *cookies; 698 u_long *cookiep; 699 #else /* defined(__NetBSD__) */ 700 off_t *cookies; 701 off_t *cookiep; 702 #endif 703 704 dprintf(("ntfs_readdir: %d cookies\n",ncookies)); 705 if (!VMSPACE_IS_KERNEL_P(uio->uio_vmspace) || 706 uio->uio_iovcnt != 1) 707 panic("ntfs_readdir: unexpected uio from NFS server"); 708 dpStart = (struct dirent *) 709 ((caddr_t)uio->uio_iov->iov_base - 710 (uio->uio_offset - off)); 711 #if defined(__FreeBSD__) 712 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 713 M_TEMP, M_WAITOK); 714 #else /* defined(__NetBSD__) */ 715 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 716 #endif 717 for (dp = dpStart, cookiep = cookies, i=0; 718 i < ncookies; 719 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 720 off += dp->d_reclen; 721 *cookiep++ = (u_int) off; 722 } 723 *ap->a_ncookies = ncookies; 724 *ap->a_cookies = cookies; 725 } 726 /* 727 if (ap->a_eofflag) 728 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 729 */ 730 out: 731 FREE(cde, M_TEMP); 732 return (error); 733 } 734 735 int 736 ntfs_lookup(void *v) 737 { 738 struct vop_lookup_args /* { 739 struct vnode *a_dvp; 740 struct vnode **a_vpp; 741 struct componentname *a_cnp; 742 } */ *ap = v; 743 struct vnode *dvp = ap->a_dvp; 744 struct ntnode *dip = VTONT(dvp); 745 struct ntfsmount *ntmp = dip->i_mp; 746 struct componentname *cnp = ap->a_cnp; 747 kauth_cred_t cred = cnp->cn_cred; 748 int error; 749 750 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %llu\n", 751 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 752 (unsigned long long)dip->i_number)); 753 754 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_lwp); 755 if(error) 756 return (error); 757 758 if ((cnp->cn_flags & ISLASTCN) && 759 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 760 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 761 return (EROFS); 762 763 #ifdef __NetBSD__ 764 /* 765 * We now have a segment name to search for, and a directory 766 * to search. 767 * 768 * Before tediously performing a linear scan of the directory, 769 * check the name cache to see if the directory/name pair 770 * we are looking for is known already. 771 */ 772 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 773 return (error); 774 #endif 775 776 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 777 dprintf(("ntfs_lookup: faking . directory in %llu\n", 778 (unsigned long long)dip->i_number)); 779 780 VREF(dvp); 781 *ap->a_vpp = dvp; 782 error = 0; 783 } else if (cnp->cn_flags & ISDOTDOT) { 784 struct ntvattr *vap; 785 786 dprintf(("ntfs_lookup: faking .. directory in %llu\n", 787 (unsigned long long)dip->i_number)); 788 789 VOP_UNLOCK(dvp, 0); 790 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 791 if (error) { 792 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 793 return (error); 794 } 795 796 dprintf(("ntfs_lookup: parentdir: %d\n", 797 vap->va_a_name->n_pnumber)); 798 error = VFS_VGET(ntmp->ntm_mountp, 799 vap->va_a_name->n_pnumber,ap->a_vpp); 800 ntfs_ntvattrrele(vap); 801 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 802 if (error) { 803 return (error); 804 } 805 } else { 806 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 807 if (error) { 808 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 809 return (error); 810 } 811 812 dprintf(("ntfs_lookup: found ino: %llu\n", 813 (unsigned long long)VTONT(*ap->a_vpp)->i_number)); 814 } 815 816 if (cnp->cn_flags & MAKEENTRY) 817 cache_enter(dvp, *ap->a_vpp, cnp); 818 819 return (error); 820 } 821 822 /* 823 * Flush the blocks of a file to disk. 824 * 825 * This function is worthless for vnodes that represent directories. Maybe we 826 * could just do a sync if they try an fsync on a directory file. 827 */ 828 static int 829 ntfs_fsync(void *v) 830 { 831 struct vop_fsync_args /* { 832 struct vnode *a_vp; 833 kauth_cred_t a_cred; 834 int a_flags; 835 off_t offlo; 836 off_t offhi; 837 struct lwp *a_l; 838 } */ *ap = v; 839 struct vnode *vp = ap->a_vp; 840 int wait; 841 842 if (ap->a_flags & FSYNC_CACHE) { 843 return EOPNOTSUPP; 844 } 845 846 wait = (ap->a_flags & FSYNC_WAIT) != 0; 847 vflushbuf(vp, wait); 848 849 return 0; 850 } 851 852 /* 853 * Return POSIX pathconf information applicable to NTFS filesystem 854 */ 855 static int 856 ntfs_pathconf(void *v) 857 { 858 struct vop_pathconf_args /* { 859 struct vnode *a_vp; 860 int a_name; 861 register_t *a_retval; 862 } */ *ap = v; 863 864 switch (ap->a_name) { 865 case _PC_LINK_MAX: 866 *ap->a_retval = 1; 867 return (0); 868 case _PC_NAME_MAX: 869 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax; 870 return (0); 871 case _PC_PATH_MAX: 872 *ap->a_retval = PATH_MAX; 873 return (0); 874 case _PC_CHOWN_RESTRICTED: 875 *ap->a_retval = 1; 876 return (0); 877 case _PC_NO_TRUNC: 878 *ap->a_retval = 0; 879 return (0); 880 case _PC_SYNC_IO: 881 *ap->a_retval = 1; 882 return (0); 883 case _PC_FILESIZEBITS: 884 *ap->a_retval = 64; 885 return (0); 886 default: 887 return (EINVAL); 888 } 889 /* NOTREACHED */ 890 } 891 892 /* 893 * Global vfs data structures 894 */ 895 vop_t **ntfs_vnodeop_p; 896 #if defined(__FreeBSD__) 897 static 898 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 899 { &vop_default_desc, (vop_t *)ntfs_bypass }, 900 901 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 902 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 903 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 904 { &vop_print_desc, (vop_t *)ntfs_print }, 905 { &vop_pathconf_desc, ntfs_pathconf }, 906 907 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 908 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 909 { &vop_lock_desc, (vop_t *)vop_stdlock }, 910 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 911 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 912 913 { &vop_access_desc, (vop_t *)ntfs_access }, 914 { &vop_close_desc, (vop_t *)ntfs_close }, 915 { &vop_open_desc, (vop_t *)ntfs_open }, 916 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 917 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 918 919 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 920 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 921 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 922 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 923 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 924 { &vop_read_desc, (vop_t *)ntfs_read }, 925 { &vop_write_desc, (vop_t *)ntfs_write }, 926 927 { NULL, NULL } 928 }; 929 930 static 931 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 932 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 933 934 VNODEOP_SET(ntfs_vnodeop_opv_desc); 935 936 #else /* !FreeBSD */ 937 938 const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 939 { &vop_default_desc, (vop_t *) ntfs_bypass }, 940 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 941 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 942 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 943 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 944 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 945 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 946 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 947 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 948 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 949 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 950 { &vop_lease_desc, genfs_lease_check }, /* lease */ 951 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 952 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 953 { &vop_poll_desc, genfs_poll }, /* poll */ 954 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 955 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 956 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 957 { &vop_fsync_desc, (vop_t *) ntfs_fsync }, /* fsync */ 958 { &vop_seek_desc, genfs_seek }, /* seek */ 959 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 960 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 961 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 962 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 963 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 964 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 965 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 966 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 967 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 968 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 969 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 970 { &vop_lock_desc, genfs_lock }, /* lock */ 971 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 972 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 973 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 974 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 975 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 976 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 977 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 978 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 979 { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */ 980 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 981 { NULL, NULL } 982 }; 983 const struct vnodeopv_desc ntfs_vnodeop_opv_desc = 984 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 985 986 #endif
Cache object: a17ce35dc32a75d23a30b9cd7c7ab9ef
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