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. 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 * $FreeBSD: src/sys/ntfs/ntfs_vnops.c,v 1.9.2.4 2002/08/06 19:35:18 semenu Exp $ 35 * 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/uio.h> 41 #include <sys/kernel.h> 42 #include <sys/time.h> 43 #include <sys/types.h> 44 #include <sys/stat.h> 45 #include <sys/vnode.h> 46 #include <sys/mount.h> 47 #include <sys/proc.h> 48 #include <sys/namei.h> 49 #include <sys/malloc.h> 50 #include <sys/buf.h> 51 #include <sys/dirent.h> 52 #include <machine/limits.h> 53 54 #include <vm/vm.h> 55 #include <vm/vm_param.h> 56 #include <vm/vm_page.h> 57 #include <vm/vm_object.h> 58 #include <vm/vm_pager.h> 59 #include <vm/vnode_pager.h> 60 #include <vm/vm_extern.h> 61 62 #include <sys/sysctl.h> 63 64 #include <sys/buf2.h> 65 66 #include "ntfs.h" 67 #include "ntfs_inode.h" 68 #include "ntfs_subr.h" 69 70 #include <sys/unistd.h> /* for pathconf(2) constants */ 71 72 static int ntfs_read (struct vop_read_args *); 73 static int ntfs_write (struct vop_write_args *ap); 74 static int ntfs_getattr (struct vop_getattr_args *ap); 75 static int ntfs_inactive (struct vop_inactive_args *ap); 76 static int ntfs_print (struct vop_print_args *ap); 77 static int ntfs_reclaim (struct vop_reclaim_args *ap); 78 static int ntfs_strategy (struct vop_strategy_args *ap); 79 static int ntfs_access (struct vop_access_args *ap); 80 static int ntfs_open (struct vop_open_args *ap); 81 static int ntfs_close (struct vop_close_args *ap); 82 static int ntfs_readdir (struct vop_readdir_args *ap); 83 static int ntfs_lookup (struct vop_old_lookup_args *ap); 84 static int ntfs_bmap (struct vop_bmap_args *ap); 85 static int ntfs_fsync (struct vop_fsync_args *ap); 86 static int ntfs_pathconf (struct vop_pathconf_args *); 87 88 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 89 90 /* 91 * This is a noop, simply returning what one has been given. 92 * 93 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, 94 * daddr_t *a_doffsetp, int *a_runp, int *a_runb) 95 */ 96 int 97 ntfs_bmap(struct vop_bmap_args *ap) 98 { 99 dprintf(("ntfs_bmap: vn: %p, blk: %u\n", ap->a_vp, 100 (u_int32_t)ap->a_loffset)); 101 if (ap->a_doffsetp != NULL) 102 *ap->a_doffsetp = ap->a_loffset; 103 if (ap->a_runp != NULL) 104 *ap->a_runp = 0; 105 if (ap->a_runb != NULL) 106 *ap->a_runb = 0; 107 return (0); 108 } 109 110 /* 111 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 112 * struct ucred *a_cred) 113 */ 114 static int 115 ntfs_read(struct vop_read_args *ap) 116 { 117 struct vnode *vp = ap->a_vp; 118 struct fnode *fp = VTOF(vp); 119 struct ntnode *ip = FTONT(fp); 120 struct uio *uio = ap->a_uio; 121 struct ntfsmount *ntmp = ip->i_mp; 122 struct buf *bp; 123 daddr_t cn; 124 int resid, off, toread; 125 int error; 126 127 dprintf(("ntfs_read: ino: %ju, off: %u resid: %zd, segflg: %d\n", 128 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 129 uio->uio_resid, uio->uio_segflg)); 130 131 dprintf(("ntfs_read: filesize: %ju", (uintmax_t)fp->f_size)); 132 133 /* don't allow reading after end of file */ 134 if (uio->uio_offset > fp->f_size) 135 return (0); 136 137 resid = (int)szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 138 139 dprintf((", resid: %d\n", resid)); 140 141 error = 0; 142 while (resid) { 143 cn = ntfs_btocn(uio->uio_offset); 144 off = ntfs_btocnoff(uio->uio_offset); 145 146 toread = min(off + resid, ntfs_cntob(1)); 147 148 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); 149 if (error) { 150 brelse(bp); 151 break; 152 } 153 154 error = uiomovebp(bp, bp->b_data + off, toread - off, uio); 155 if(error) { 156 brelse(bp); 157 break; 158 } 159 brelse(bp); 160 161 resid -= toread - off; 162 } 163 164 return (error); 165 } 166 167 /* 168 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 169 */ 170 static int 171 ntfs_getattr(struct vop_getattr_args *ap) 172 { 173 struct vnode *vp = ap->a_vp; 174 struct fnode *fp = VTOF(vp); 175 struct ntnode *ip = FTONT(fp); 176 struct vattr *vap = ap->a_vap; 177 178 dprintf(("ntfs_getattr: %ju, flags: %d\n", (uintmax_t)ip->i_number, 179 ip->i_flag)); 180 181 vap->va_fsid = devid_from_dev(ip->i_dev); 182 vap->va_fileid = ip->i_number; 183 vap->va_mode = ip->i_mp->ntm_mode; 184 vap->va_nlink = ip->i_nlink; 185 vap->va_uid = ip->i_mp->ntm_uid; 186 vap->va_gid = ip->i_mp->ntm_gid; 187 vap->va_rmajor = VNOVAL; 188 vap->va_rminor = VNOVAL; 189 vap->va_size = fp->f_size; 190 vap->va_bytes = fp->f_allocated; 191 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 192 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 193 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 194 vap->va_flags = ip->i_flag; 195 vap->va_gen = 0; 196 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 197 vap->va_type = vp->v_type; 198 vap->va_filerev = 0; 199 return (0); 200 } 201 202 203 /* 204 * Last reference to an ntnode. If necessary, write or delete it. 205 * 206 * ntfs_inactive(struct vnode *a_vp) 207 */ 208 int 209 ntfs_inactive(struct vop_inactive_args *ap) 210 { 211 struct vnode *vp = ap->a_vp; 212 #ifdef NTFS_DEBUG 213 struct ntnode *ip = VTONT(vp); 214 #endif 215 216 dprintf(("ntfs_inactive: vnode: %p, ntnode: %ju\n", vp, (uintmax_t)ip->i_number)); 217 218 if (ntfs_prtactive && VREFCNT(vp) > 1) 219 vprint("ntfs_inactive: pushing active", vp); 220 221 /* 222 * XXX since we don't support any filesystem changes 223 * right now, nothing more needs to be done 224 */ 225 return (0); 226 } 227 228 /* 229 * Reclaim an fnode/ntnode so that it can be used for other purposes. 230 * 231 * ntfs_reclaim(struct vnode *a_vp) 232 */ 233 int 234 ntfs_reclaim(struct vop_reclaim_args *ap) 235 { 236 struct vnode *vp = ap->a_vp; 237 struct fnode *fp = VTOF(vp); 238 struct ntnode *ip = FTONT(fp); 239 int error; 240 241 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %ju\n", vp, (uintmax_t)ip->i_number)); 242 243 if (ntfs_prtactive && VREFCNT(vp) > 1) 244 vprint("ntfs_reclaim: pushing active", vp); 245 246 if ((error = ntfs_ntget(ip)) != 0) 247 return (error); 248 249 ntfs_frele(fp); 250 ntfs_ntput(ip); 251 vp->v_data = NULL; 252 253 return (0); 254 } 255 256 /* 257 * ntfs_print(struct vnode *a_vp) 258 */ 259 static int 260 ntfs_print(struct vop_print_args *ap) 261 { 262 return (0); 263 } 264 265 /* 266 * Calculate the logical to physical mapping if not done already, 267 * then call the device strategy routine. 268 * 269 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio) 270 */ 271 int 272 ntfs_strategy(struct vop_strategy_args *ap) 273 { 274 struct bio *bio = ap->a_bio; 275 struct buf *bp = bio->bio_buf; 276 struct vnode *vp = ap->a_vp; 277 struct fnode *fp = VTOF(vp); 278 struct ntnode *ip = FTONT(fp); 279 struct ntfsmount *ntmp = ip->i_mp; 280 u_int32_t toread; 281 u_int32_t towrite; 282 size_t tmp; 283 int error; 284 285 dprintf(("ntfs_strategy: loffset: %u, doffset: %u\n", 286 (uint32_t)bp->b_loffset, (uint32_t)bio->bio_offset)); 287 288 dprintf(("strategy: bcount: %u flags: 0x%x\n", 289 bp->b_bcount, bp->b_flags)); 290 291 bp->b_error = 0; 292 293 switch(bp->b_cmd) { 294 case BUF_CMD_READ: 295 if (bio->bio_offset >= fp->f_size) { 296 clrbuf(bp); 297 error = 0; 298 } else { 299 toread = min(bp->b_bcount, 300 fp->f_size - bio->bio_offset); 301 dprintf(("ntfs_strategy: toread: %u, fsize: %ju\n", 302 toread, (uintmax_t)fp->f_size)); 303 304 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 305 fp->f_attrname, bio->bio_offset, 306 toread, bp->b_data, NULL); 307 308 if (error) { 309 kprintf("ntfs_strategy: ntfs_readattr failed\n"); 310 bp->b_error = error; 311 bp->b_flags |= B_ERROR; 312 } 313 314 bzero(bp->b_data + toread, bp->b_bcount - toread); 315 } 316 break; 317 case BUF_CMD_WRITE: 318 if (bio->bio_offset + bp->b_bcount >= fp->f_size) { 319 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n"); 320 bp->b_error = error = EFBIG; 321 bp->b_flags |= B_ERROR; 322 } else { 323 towrite = min(bp->b_bcount, 324 fp->f_size - bio->bio_offset); 325 dprintf(("ntfs_strategy: towrite: %d, fsize: %ju\n", 326 towrite, (uintmax_t)fp->f_size)); 327 328 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 329 fp->f_attrname, bio->bio_offset,towrite, 330 bp->b_data, &tmp, NULL); 331 332 if (error) { 333 kprintf("ntfs_strategy: ntfs_writeattr fail\n"); 334 bp->b_error = error; 335 bp->b_flags |= B_ERROR; 336 } 337 } 338 break; 339 default: 340 panic("ntfs: bad b_cmd %d", bp->b_cmd); 341 } 342 biodone(bio); 343 return (error); 344 } 345 346 /* 347 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 348 * struct ucred *a_cred) 349 */ 350 static int 351 ntfs_write(struct vop_write_args *ap) 352 { 353 struct vnode *vp = ap->a_vp; 354 struct fnode *fp = VTOF(vp); 355 struct ntnode *ip = FTONT(fp); 356 struct uio *uio = ap->a_uio; 357 struct ntfsmount *ntmp = ip->i_mp; 358 size_t towrite; 359 size_t written; 360 int error; 361 362 dprintf(("ntfs_write: ino: %ju, off: %u resid: %zd, segflg: %d\n", 363 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 364 uio->uio_resid, uio->uio_segflg)); 365 dprintf(("ntfs_write: filesize: %ju ", (uintmax_t)fp->f_size)); 366 367 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 368 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 369 return (EFBIG); 370 } 371 if (uio->uio_offset > fp->f_size) 372 return (EFBIG); 373 374 towrite = szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 375 376 dprintf((", towrite: %zd\n", towrite)); 377 378 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 379 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 380 #ifdef NTFS_DEBUG 381 if (error) 382 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error); 383 #endif 384 385 return (error); 386 } 387 388 /* 389 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 390 */ 391 int 392 ntfs_access(struct vop_access_args *ap) 393 { 394 struct vnode *vp = ap->a_vp; 395 struct ntnode *ip = VTONT(vp); 396 struct ucred *cred = ap->a_cred; 397 mode_t mask, mode = ap->a_mode; 398 gid_t *gp; 399 int i; 400 #ifdef QUOTA 401 int error; 402 #endif 403 404 dprintf(("ntfs_access: %ju\n", (uintmax_t)ip->i_number)); 405 406 /* 407 * Disallow write attempts on read-only file systems; 408 * unless the file is a socket, fifo, or a block or 409 * character device resident on the file system. 410 */ 411 if (mode & VWRITE) { 412 switch ((int)vp->v_type) { 413 case VDIR: 414 case VLNK: 415 case VREG: 416 if (vp->v_mount->mnt_flag & MNT_RDONLY) 417 return (EROFS); 418 #ifdef QUOTA 419 if (error = getinoquota(ip)) 420 return (error); 421 #endif 422 break; 423 } 424 } 425 426 /* Otherwise, user id 0 always gets access. */ 427 if (cred->cr_uid == 0) 428 return (0); 429 430 mask = 0; 431 432 /* Otherwise, check the owner. */ 433 if (cred->cr_uid == ip->i_mp->ntm_uid) { 434 if (mode & VEXEC) 435 mask |= S_IXUSR; 436 if (mode & VREAD) 437 mask |= S_IRUSR; 438 if (mode & VWRITE) 439 mask |= S_IWUSR; 440 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 441 } 442 443 /* Otherwise, check the groups. */ 444 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 445 if (ip->i_mp->ntm_gid == *gp) { 446 if (mode & VEXEC) 447 mask |= S_IXGRP; 448 if (mode & VREAD) 449 mask |= S_IRGRP; 450 if (mode & VWRITE) 451 mask |= S_IWGRP; 452 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 453 } 454 455 /* Otherwise, check everyone else. */ 456 if (mode & VEXEC) 457 mask |= S_IXOTH; 458 if (mode & VREAD) 459 mask |= S_IROTH; 460 if (mode & VWRITE) 461 mask |= S_IWOTH; 462 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 463 } 464 465 /* 466 * Open called. 467 * 468 * Nothing to do. 469 * 470 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 471 * struct file *a_fp) 472 */ 473 /* ARGSUSED */ 474 static int 475 ntfs_open(struct vop_open_args *ap) 476 { 477 return (vop_stdopen(ap)); 478 } 479 480 /* 481 * Close called. 482 * 483 * Update the times on the inode. 484 * 485 * ntfs_close(struct vnode *a_vp, int a_fflag) 486 */ 487 /* ARGSUSED */ 488 static int 489 ntfs_close(struct vop_close_args *ap) 490 { 491 #ifdef NTFS_DEBUG 492 struct vnode *vp = ap->a_vp; 493 struct ntnode *ip = VTONT(vp); 494 495 kprintf("ntfs_close: %ju\n", (uintmax_t)ip->i_number); 496 #endif 497 498 return (vop_stdclose(ap)); 499 } 500 501 /* 502 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 503 * int *a_ncookies, off_t **cookies) 504 */ 505 int 506 ntfs_readdir(struct vop_readdir_args *ap) 507 { 508 struct vnode *vp = ap->a_vp; 509 struct fnode *fp = VTOF(vp); 510 struct ntnode *ip = FTONT(fp); 511 struct uio *uio = ap->a_uio; 512 struct ntfsmount *ntmp = ip->i_mp; 513 int i, j, error = 0; 514 wchar c; 515 u_int32_t faked = 0, num, off; 516 int ncookies = 0; 517 char convname[NTFS_MAXFILENAME + 1]; 518 519 dprintf(("ntfs_readdir %ju off: %u resid: %zd\n", 520 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 521 uio->uio_resid)); 522 523 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 524 return (EINVAL); 525 error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_FAILRECLAIM); 526 if (error) 527 return (error); 528 529 /* 530 * uio->uio_offset carries the number of the entry 531 * where we should start returning dirents. 532 * 533 * We fake up "." if we're not reading the FS root 534 * and we always fake up "..". 535 * 536 * off contains the entry we are starting at, 537 * num increments while we are reading. 538 */ 539 540 off = num = uio->uio_offset; 541 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 542 543 /* Simulate . in every dir except ROOT */ 544 if (ip->i_number != NTFS_ROOTINO && num == 0) { 545 if (vop_write_dirent(&error, uio, ip->i_number, 546 DT_DIR, 1, ".")) 547 goto done; 548 if (error) 549 goto done; 550 551 num++; 552 ncookies++; 553 } 554 555 /* Simulate .. in every dir including ROOT */ 556 if (num == faked - 1) { 557 /* XXX NTFS_ROOTINO seems to be wrong here */ 558 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 559 DT_DIR, 2, "..")) 560 goto readdone; 561 if (error) 562 goto done; 563 564 num++; 565 ncookies++; 566 } 567 568 for (;;) { 569 struct attr_indexentry *iep; 570 571 /* 572 * num is the number of the entry we will return, 573 * but ntfs_ntreaddir takes the entry number of the 574 * ntfs directory listing, so subtract the faked 575 * . and .. entries. 576 */ 577 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 578 579 if (error) 580 goto done; 581 582 if( NULL == iep ) 583 break; 584 585 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 586 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 587 { 588 if(!ntfs_isnamepermitted(ntmp,iep)) 589 continue; 590 for(i=0, j=0; i < iep->ie_fnamelen; i++, j++) { 591 c = NTFS_U28(iep->ie_fname[i]); 592 if (c&0xFF00) 593 convname[j++] = (char)(c>>8); 594 convname[j] = (char)c&0xFF; 595 } 596 convname[j] = '\0'; 597 if (vop_write_dirent(&error, uio, iep->ie_number, 598 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 599 j, convname)) 600 goto readdone; 601 602 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 603 "flag: %d, %s\n", 604 ncookies, convname, iep->ie_fnametype, 605 iep->ie_flag, 606 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 607 "dir" : "reg")); 608 609 if (error) 610 goto done; 611 612 ncookies++; 613 num++; 614 } 615 } 616 617 readdone: 618 uio->uio_offset = num; 619 620 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 621 ncookies,(u_int)(uio->uio_offset - off))); 622 dprintf(("ntfs_readdir: off: %u resid: %zd\n", 623 (uint32_t)uio->uio_offset, uio->uio_resid)); 624 625 if (!error && ap->a_ncookies != NULL) { 626 off_t *cookies; 627 off_t *cookiep; 628 629 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 630 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 631 panic("ntfs_readdir: unexpected uio from NFS server"); 632 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 633 cookiep = cookies; 634 while (off < num) 635 *cookiep++ = ++off; 636 637 *ap->a_ncookies = ncookies; 638 *ap->a_cookies = cookies; 639 } 640 /* 641 if (ap->a_eofflag) 642 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset; 643 */ 644 done: 645 vn_unlock(vp); 646 return (error); 647 } 648 649 /* 650 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 651 * struct componentname *a_cnp) 652 */ 653 int 654 ntfs_lookup(struct vop_old_lookup_args *ap) 655 { 656 struct vnode *dvp = ap->a_dvp; 657 struct ntnode *dip = VTONT(dvp); 658 struct ntfsmount *ntmp = dip->i_mp; 659 struct componentname *cnp = ap->a_cnp; 660 int error; 661 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 662 #ifdef NTFS_DEBUG 663 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 664 #endif 665 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %ju, lp: %d, wp: %d \n", 666 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 667 (uintmax_t)dip->i_number, lockparent, wantparent)); 668 669 *ap->a_vpp = NULL; 670 671 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 672 dprintf(("ntfs_lookup: faking . directory in %u\n", 673 (uint32_t)dip->i_number)); 674 675 vref(dvp); 676 *ap->a_vpp = dvp; 677 error = 0; 678 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 679 struct ntvattr *vap; 680 681 dprintf(("ntfs_lookup: faking .. directory in %d\n", 682 (uint32_t)dip->i_number)); 683 684 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 685 if(error) 686 return (error); 687 688 VOP__UNLOCK(dvp, 0); 689 cnp->cn_flags |= CNP_PDIRUNLOCK; 690 691 dprintf(("ntfs_lookup: parentdir: %d\n", 692 vap->va_a_name->n_pnumber)); 693 error = VFS_VGET(ntmp->ntm_mountp, NULL, 694 vap->va_a_name->n_pnumber,ap->a_vpp); 695 ntfs_ntvattrrele(vap); 696 if (error) { 697 if (VOP_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 698 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 699 return (error); 700 } 701 702 if (lockparent) { 703 error = VOP_LOCK(dvp, LK_EXCLUSIVE); 704 if (error) { 705 vput(*ap->a_vpp); 706 *ap->a_vpp = NULL; 707 return (error); 708 } 709 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 710 } 711 } else { 712 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 713 if (error) { 714 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 715 return (error); 716 } 717 718 dprintf(("ntfs_lookup: found ino: %u\n", 719 (uint32_t)VTONT(*ap->a_vpp)->i_number)); 720 721 if (!lockparent) { 722 VOP__UNLOCK(dvp, 0); 723 cnp->cn_flags |= CNP_PDIRUNLOCK; 724 } 725 } 726 return (error); 727 } 728 729 /* 730 * Flush the blocks of a file to disk. 731 * 732 * This function is worthless for vnodes that represent directories. Maybe we 733 * could just do a sync if they try an fsync on a directory file. 734 * 735 * ntfs_fsync(struct vnode *a_vp, int a_waitfor) 736 */ 737 static int 738 ntfs_fsync(struct vop_fsync_args *ap) 739 { 740 return (0); 741 } 742 743 /* 744 * Return POSIX pathconf information applicable to NTFS filesystem 745 */ 746 int 747 ntfs_pathconf(struct vop_pathconf_args *ap) 748 { 749 switch (ap->a_name) { 750 case _PC_LINK_MAX: 751 *ap->a_retval = 1; 752 return (0); 753 case _PC_NAME_MAX: 754 *ap->a_retval = NTFS_MAXFILENAME; 755 return (0); 756 case _PC_PATH_MAX: 757 *ap->a_retval = PATH_MAX; 758 return (0); 759 case _PC_CHOWN_RESTRICTED: 760 *ap->a_retval = 1; 761 return (0); 762 case _PC_NO_TRUNC: 763 *ap->a_retval = 0; 764 return (0); 765 default: 766 return (EINVAL); 767 } 768 /* NOTREACHED */ 769 } 770 771 /* 772 * Global vfs data structures 773 */ 774 struct vop_ops ntfs_vnode_vops = { 775 .vop_default = vop_defaultop, 776 .vop_getattr = ntfs_getattr, 777 .vop_inactive = ntfs_inactive, 778 .vop_reclaim = ntfs_reclaim, 779 .vop_print = ntfs_print, 780 .vop_pathconf = ntfs_pathconf, 781 .vop_old_lookup = ntfs_lookup, 782 .vop_access = ntfs_access, 783 .vop_close = ntfs_close, 784 .vop_open = ntfs_open, 785 .vop_readdir = ntfs_readdir, 786 .vop_fsync = ntfs_fsync, 787 .vop_bmap = ntfs_bmap, 788 .vop_getpages = vop_stdgetpages, 789 .vop_putpages = vop_stdputpages, 790 .vop_strategy = ntfs_strategy, 791 .vop_read = ntfs_read, 792 .vop_write = ntfs_write 793 }; 794 795