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/kernel.h> 41 #include <sys/time.h> 42 #include <sys/types.h> 43 #include <sys/stat.h> 44 #include <sys/vnode.h> 45 #include <sys/mount.h> 46 #include <sys/proc.h> 47 #include <sys/namei.h> 48 #include <sys/malloc.h> 49 #include <sys/buf.h> 50 #include <sys/dirent.h> 51 #include <machine/limits.h> 52 53 #include <vm/vm.h> 54 #include <vm/vm_param.h> 55 #include <vm/vm_page.h> 56 #include <vm/vm_object.h> 57 #include <vm/vm_pager.h> 58 #include <vm/vnode_pager.h> 59 #include <vm/vm_extern.h> 60 61 #include <sys/sysctl.h> 62 63 #include <sys/buf2.h> 64 65 #include "ntfs.h" 66 #include "ntfs_inode.h" 67 #include "ntfs_subr.h" 68 69 #include <sys/unistd.h> /* for pathconf(2) constants */ 70 71 static int ntfs_read (struct vop_read_args *); 72 static int ntfs_write (struct vop_write_args *ap); 73 static int ntfs_getattr (struct vop_getattr_args *ap); 74 static int ntfs_inactive (struct vop_inactive_args *ap); 75 static int ntfs_print (struct vop_print_args *ap); 76 static int ntfs_reclaim (struct vop_reclaim_args *ap); 77 static int ntfs_strategy (struct vop_strategy_args *ap); 78 static int ntfs_access (struct vop_access_args *ap); 79 static int ntfs_open (struct vop_open_args *ap); 80 static int ntfs_close (struct vop_close_args *ap); 81 static int ntfs_readdir (struct vop_readdir_args *ap); 82 static int ntfs_lookup (struct vop_old_lookup_args *ap); 83 static int ntfs_bmap (struct vop_bmap_args *ap); 84 static int ntfs_fsync (struct vop_fsync_args *ap); 85 static int ntfs_pathconf (struct vop_pathconf_args *); 86 87 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 88 89 /* 90 * This is a noop, simply returning what one has been given. 91 * 92 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, 93 * daddr_t *a_doffsetp, int *a_runp, int *a_runb) 94 */ 95 int 96 ntfs_bmap(struct vop_bmap_args *ap) 97 { 98 dprintf(("ntfs_bmap: vn: %p, blk: %u\n", ap->a_vp, 99 (u_int32_t)ap->a_loffset)); 100 if (ap->a_doffsetp != NULL) 101 *ap->a_doffsetp = ap->a_loffset; 102 if (ap->a_runp != NULL) 103 *ap->a_runp = 0; 104 if (ap->a_runb != NULL) 105 *ap->a_runb = 0; 106 return (0); 107 } 108 109 /* 110 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 111 * struct ucred *a_cred) 112 */ 113 static int 114 ntfs_read(struct vop_read_args *ap) 115 { 116 struct vnode *vp = ap->a_vp; 117 struct fnode *fp = VTOF(vp); 118 struct ntnode *ip = FTONT(fp); 119 struct uio *uio = ap->a_uio; 120 struct ntfsmount *ntmp = ip->i_mp; 121 struct buf *bp; 122 daddr_t cn; 123 int resid, off, toread; 124 int error; 125 126 dprintf(("ntfs_read: ino: %ju, off: %u resid: %zd, segflg: %d\n", 127 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 128 uio->uio_resid, uio->uio_segflg)); 129 130 dprintf(("ntfs_read: filesize: %ju", (uintmax_t)fp->f_size)); 131 132 /* don't allow reading after end of file */ 133 if (uio->uio_offset > fp->f_size) 134 return (0); 135 136 resid = (int)szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 137 138 dprintf((", resid: %d\n", resid)); 139 140 error = 0; 141 while (resid) { 142 cn = ntfs_btocn(uio->uio_offset); 143 off = ntfs_btocnoff(uio->uio_offset); 144 145 toread = min(off + resid, ntfs_cntob(1)); 146 147 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); 148 if (error) { 149 brelse(bp); 150 break; 151 } 152 153 error = uiomovebp(bp, bp->b_data + off, toread - off, uio); 154 if(error) { 155 brelse(bp); 156 break; 157 } 158 brelse(bp); 159 160 resid -= toread - off; 161 } 162 163 return (error); 164 } 165 166 /* 167 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 168 */ 169 static int 170 ntfs_getattr(struct vop_getattr_args *ap) 171 { 172 struct vnode *vp = ap->a_vp; 173 struct fnode *fp = VTOF(vp); 174 struct ntnode *ip = FTONT(fp); 175 struct vattr *vap = ap->a_vap; 176 177 dprintf(("ntfs_getattr: %ju, flags: %d\n", (uintmax_t)ip->i_number, 178 ip->i_flag)); 179 180 vap->va_fsid = dev2udev(ip->i_dev); 181 vap->va_fileid = ip->i_number; 182 vap->va_mode = ip->i_mp->ntm_mode; 183 vap->va_nlink = ip->i_nlink; 184 vap->va_uid = ip->i_mp->ntm_uid; 185 vap->va_gid = ip->i_mp->ntm_gid; 186 vap->va_rmajor = VNOVAL; 187 vap->va_rminor = VNOVAL; 188 vap->va_size = fp->f_size; 189 vap->va_bytes = fp->f_allocated; 190 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 191 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 192 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 193 vap->va_flags = ip->i_flag; 194 vap->va_gen = 0; 195 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 196 vap->va_type = vp->v_type; 197 vap->va_filerev = 0; 198 return (0); 199 } 200 201 202 /* 203 * Last reference to an ntnode. If necessary, write or delete it. 204 * 205 * ntfs_inactive(struct vnode *a_vp) 206 */ 207 int 208 ntfs_inactive(struct vop_inactive_args *ap) 209 { 210 struct vnode *vp = ap->a_vp; 211 #ifdef NTFS_DEBUG 212 struct ntnode *ip = VTONT(vp); 213 #endif 214 215 dprintf(("ntfs_inactive: vnode: %p, ntnode: %ju\n", vp, (uintmax_t)ip->i_number)); 216 217 if (ntfs_prtactive && VREFCNT(vp) > 1) 218 vprint("ntfs_inactive: pushing active", vp); 219 220 /* 221 * XXX since we don't support any filesystem changes 222 * right now, nothing more needs to be done 223 */ 224 return (0); 225 } 226 227 /* 228 * Reclaim an fnode/ntnode so that it can be used for other purposes. 229 * 230 * ntfs_reclaim(struct vnode *a_vp) 231 */ 232 int 233 ntfs_reclaim(struct vop_reclaim_args *ap) 234 { 235 struct vnode *vp = ap->a_vp; 236 struct fnode *fp = VTOF(vp); 237 struct ntnode *ip = FTONT(fp); 238 int error; 239 240 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %ju\n", vp, (uintmax_t)ip->i_number)); 241 242 if (ntfs_prtactive && VREFCNT(vp) > 1) 243 vprint("ntfs_reclaim: pushing active", vp); 244 245 if ((error = ntfs_ntget(ip)) != 0) 246 return (error); 247 248 ntfs_frele(fp); 249 ntfs_ntput(ip); 250 vp->v_data = NULL; 251 252 return (0); 253 } 254 255 /* 256 * ntfs_print(struct vnode *a_vp) 257 */ 258 static int 259 ntfs_print(struct vop_print_args *ap) 260 { 261 return (0); 262 } 263 264 /* 265 * Calculate the logical to physical mapping if not done already, 266 * then call the device strategy routine. 267 * 268 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio) 269 */ 270 int 271 ntfs_strategy(struct vop_strategy_args *ap) 272 { 273 struct bio *bio = ap->a_bio; 274 struct buf *bp = bio->bio_buf; 275 struct vnode *vp = ap->a_vp; 276 struct fnode *fp = VTOF(vp); 277 struct ntnode *ip = FTONT(fp); 278 struct ntfsmount *ntmp = ip->i_mp; 279 u_int32_t toread; 280 u_int32_t towrite; 281 size_t tmp; 282 int error; 283 284 dprintf(("ntfs_strategy: loffset: %u, doffset: %u\n", 285 (uint32_t)bp->b_loffset, (uint32_t)bio->bio_offset)); 286 287 dprintf(("strategy: bcount: %u flags: 0x%x\n", 288 bp->b_bcount, bp->b_flags)); 289 290 bp->b_error = 0; 291 292 switch(bp->b_cmd) { 293 case BUF_CMD_READ: 294 if (bio->bio_offset >= fp->f_size) { 295 clrbuf(bp); 296 error = 0; 297 } else { 298 toread = min(bp->b_bcount, 299 fp->f_size - bio->bio_offset); 300 dprintf(("ntfs_strategy: toread: %u, fsize: %ju\n", 301 toread, (uintmax_t)fp->f_size)); 302 303 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 304 fp->f_attrname, bio->bio_offset, 305 toread, bp->b_data, NULL); 306 307 if (error) { 308 kprintf("ntfs_strategy: ntfs_readattr failed\n"); 309 bp->b_error = error; 310 bp->b_flags |= B_ERROR; 311 } 312 313 bzero(bp->b_data + toread, bp->b_bcount - toread); 314 } 315 break; 316 case BUF_CMD_WRITE: 317 if (bio->bio_offset + bp->b_bcount >= fp->f_size) { 318 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n"); 319 bp->b_error = error = EFBIG; 320 bp->b_flags |= B_ERROR; 321 } else { 322 towrite = min(bp->b_bcount, 323 fp->f_size - bio->bio_offset); 324 dprintf(("ntfs_strategy: towrite: %d, fsize: %ju\n", 325 towrite, (uintmax_t)fp->f_size)); 326 327 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 328 fp->f_attrname, bio->bio_offset,towrite, 329 bp->b_data, &tmp, NULL); 330 331 if (error) { 332 kprintf("ntfs_strategy: ntfs_writeattr fail\n"); 333 bp->b_error = error; 334 bp->b_flags |= B_ERROR; 335 } 336 } 337 break; 338 default: 339 panic("ntfs: bad b_cmd %d", bp->b_cmd); 340 } 341 biodone(bio); 342 return (error); 343 } 344 345 /* 346 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 347 * struct ucred *a_cred) 348 */ 349 static int 350 ntfs_write(struct vop_write_args *ap) 351 { 352 struct vnode *vp = ap->a_vp; 353 struct fnode *fp = VTOF(vp); 354 struct ntnode *ip = FTONT(fp); 355 struct uio *uio = ap->a_uio; 356 struct ntfsmount *ntmp = ip->i_mp; 357 size_t towrite; 358 size_t written; 359 int error; 360 361 dprintf(("ntfs_write: ino: %ju, off: %u resid: %zd, segflg: %d\n", 362 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 363 uio->uio_resid, uio->uio_segflg)); 364 dprintf(("ntfs_write: filesize: %ju ", (uintmax_t)fp->f_size)); 365 366 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 367 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 368 return (EFBIG); 369 } 370 if (uio->uio_offset > fp->f_size) 371 return (EFBIG); 372 373 towrite = szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 374 375 dprintf((", towrite: %zd\n", towrite)); 376 377 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 378 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 379 #ifdef NTFS_DEBUG 380 if (error) 381 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error); 382 #endif 383 384 return (error); 385 } 386 387 /* 388 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 389 */ 390 int 391 ntfs_access(struct vop_access_args *ap) 392 { 393 struct vnode *vp = ap->a_vp; 394 struct ntnode *ip = VTONT(vp); 395 struct ucred *cred = ap->a_cred; 396 mode_t mask, mode = ap->a_mode; 397 gid_t *gp; 398 int i; 399 #ifdef QUOTA 400 int error; 401 #endif 402 403 dprintf(("ntfs_access: %ju\n", (uintmax_t)ip->i_number)); 404 405 /* 406 * Disallow write attempts on read-only file systems; 407 * unless the file is a socket, fifo, or a block or 408 * character device resident on the file system. 409 */ 410 if (mode & VWRITE) { 411 switch ((int)vp->v_type) { 412 case VDIR: 413 case VLNK: 414 case VREG: 415 if (vp->v_mount->mnt_flag & MNT_RDONLY) 416 return (EROFS); 417 #ifdef QUOTA 418 if (error = getinoquota(ip)) 419 return (error); 420 #endif 421 break; 422 } 423 } 424 425 /* Otherwise, user id 0 always gets access. */ 426 if (cred->cr_uid == 0) 427 return (0); 428 429 mask = 0; 430 431 /* Otherwise, check the owner. */ 432 if (cred->cr_uid == ip->i_mp->ntm_uid) { 433 if (mode & VEXEC) 434 mask |= S_IXUSR; 435 if (mode & VREAD) 436 mask |= S_IRUSR; 437 if (mode & VWRITE) 438 mask |= S_IWUSR; 439 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 440 } 441 442 /* Otherwise, check the groups. */ 443 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 444 if (ip->i_mp->ntm_gid == *gp) { 445 if (mode & VEXEC) 446 mask |= S_IXGRP; 447 if (mode & VREAD) 448 mask |= S_IRGRP; 449 if (mode & VWRITE) 450 mask |= S_IWGRP; 451 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 452 } 453 454 /* Otherwise, check everyone else. */ 455 if (mode & VEXEC) 456 mask |= S_IXOTH; 457 if (mode & VREAD) 458 mask |= S_IROTH; 459 if (mode & VWRITE) 460 mask |= S_IWOTH; 461 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 462 } 463 464 /* 465 * Open called. 466 * 467 * Nothing to do. 468 * 469 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 470 * struct file *a_fp) 471 */ 472 /* ARGSUSED */ 473 static int 474 ntfs_open(struct vop_open_args *ap) 475 { 476 return (vop_stdopen(ap)); 477 } 478 479 /* 480 * Close called. 481 * 482 * Update the times on the inode. 483 * 484 * ntfs_close(struct vnode *a_vp, int a_fflag) 485 */ 486 /* ARGSUSED */ 487 static int 488 ntfs_close(struct vop_close_args *ap) 489 { 490 #if NTFS_DEBUG 491 struct vnode *vp = ap->a_vp; 492 struct ntnode *ip = VTONT(vp); 493 494 kprintf("ntfs_close: %ju\n", (uintmax_t)ip->i_number); 495 #endif 496 497 return (vop_stdclose(ap)); 498 } 499 500 /* 501 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 502 * int *a_ncookies, off_t **cookies) 503 */ 504 int 505 ntfs_readdir(struct vop_readdir_args *ap) 506 { 507 struct vnode *vp = ap->a_vp; 508 struct fnode *fp = VTOF(vp); 509 struct ntnode *ip = FTONT(fp); 510 struct uio *uio = ap->a_uio; 511 struct ntfsmount *ntmp = ip->i_mp; 512 int i, j, error = 0; 513 wchar c; 514 u_int32_t faked = 0, num, off; 515 int ncookies = 0; 516 char convname[NTFS_MAXFILENAME + 1]; 517 518 dprintf(("ntfs_readdir %ju off: %u resid: %zd\n", 519 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 520 uio->uio_resid)); 521 522 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 523 return (EINVAL); 524 error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_FAILRECLAIM); 525 if (error) 526 return (error); 527 528 /* 529 * uio->uio_offset carries the number of the entry 530 * where we should start returning dirents. 531 * 532 * We fake up "." if we're not reading the FS root 533 * and we always fake up "..". 534 * 535 * off contains the entry we are starting at, 536 * num increments while we are reading. 537 */ 538 539 off = num = uio->uio_offset; 540 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 541 542 /* Simulate . in every dir except ROOT */ 543 if (ip->i_number != NTFS_ROOTINO && num == 0) { 544 if (vop_write_dirent(&error, uio, ip->i_number, 545 DT_DIR, 1, ".")) 546 goto done; 547 if (error) 548 goto done; 549 550 num++; 551 ncookies++; 552 } 553 554 /* Simulate .. in every dir including ROOT */ 555 if (num == faked - 1) { 556 /* XXX NTFS_ROOTINO seems to be wrong here */ 557 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 558 DT_DIR, 2, "..")) 559 goto readdone; 560 if (error) 561 goto done; 562 563 num++; 564 ncookies++; 565 } 566 567 for (;;) { 568 struct attr_indexentry *iep; 569 570 /* 571 * num is the number of the entry we will return, 572 * but ntfs_ntreaddir takes the entry number of the 573 * ntfs directory listing, so subtract the faked 574 * . and .. entries. 575 */ 576 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 577 578 if (error) 579 goto done; 580 581 if( NULL == iep ) 582 break; 583 584 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 585 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 586 { 587 if(!ntfs_isnamepermitted(ntmp,iep)) 588 continue; 589 for(i=0, j=0; i < iep->ie_fnamelen; i++, j++) { 590 c = NTFS_U28(iep->ie_fname[i]); 591 if (c&0xFF00) 592 convname[j++] = (char)(c>>8); 593 convname[j] = (char)c&0xFF; 594 } 595 convname[j] = '\0'; 596 if (vop_write_dirent(&error, uio, iep->ie_number, 597 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 598 j, convname)) 599 goto readdone; 600 601 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 602 "flag: %d, %s\n", 603 ncookies, convname, iep->ie_fnametype, 604 iep->ie_flag, 605 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 606 "dir" : "reg")); 607 608 if (error) 609 goto done; 610 611 ncookies++; 612 num++; 613 } 614 } 615 616 readdone: 617 uio->uio_offset = num; 618 619 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 620 ncookies,(u_int)(uio->uio_offset - off))); 621 dprintf(("ntfs_readdir: off: %u resid: %zd\n", 622 (uint32_t)uio->uio_offset, uio->uio_resid)); 623 624 if (!error && ap->a_ncookies != NULL) { 625 off_t *cookies; 626 off_t *cookiep; 627 628 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 629 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 630 panic("ntfs_readdir: unexpected uio from NFS server"); 631 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 632 cookiep = cookies; 633 while (off < num) 634 *cookiep++ = ++off; 635 636 *ap->a_ncookies = ncookies; 637 *ap->a_cookies = cookies; 638 } 639 /* 640 if (ap->a_eofflag) 641 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset; 642 */ 643 done: 644 vn_unlock(vp); 645 return (error); 646 } 647 648 /* 649 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 650 * struct componentname *a_cnp) 651 */ 652 int 653 ntfs_lookup(struct vop_old_lookup_args *ap) 654 { 655 struct vnode *dvp = ap->a_dvp; 656 struct ntnode *dip = VTONT(dvp); 657 struct ntfsmount *ntmp = dip->i_mp; 658 struct componentname *cnp = ap->a_cnp; 659 int error; 660 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 661 #if NTFS_DEBUG 662 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 663 #endif 664 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %ju, lp: %d, wp: %d \n", 665 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 666 (uintmax_t)dip->i_number, lockparent, wantparent)); 667 668 *ap->a_vpp = NULL; 669 670 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 671 dprintf(("ntfs_lookup: faking . directory in %u\n", 672 (uint32_t)dip->i_number)); 673 674 vref(dvp); 675 *ap->a_vpp = dvp; 676 error = 0; 677 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 678 struct ntvattr *vap; 679 680 dprintf(("ntfs_lookup: faking .. directory in %d\n", 681 (uint32_t)dip->i_number)); 682 683 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 684 if(error) 685 return (error); 686 687 VOP__UNLOCK(dvp, 0); 688 cnp->cn_flags |= CNP_PDIRUNLOCK; 689 690 dprintf(("ntfs_lookup: parentdir: %d\n", 691 vap->va_a_name->n_pnumber)); 692 error = VFS_VGET(ntmp->ntm_mountp, NULL, 693 vap->va_a_name->n_pnumber,ap->a_vpp); 694 ntfs_ntvattrrele(vap); 695 if (error) { 696 if (VOP_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 697 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 698 return (error); 699 } 700 701 if (lockparent) { 702 error = VOP_LOCK(dvp, LK_EXCLUSIVE); 703 if (error) { 704 vput(*ap->a_vpp); 705 *ap->a_vpp = NULL; 706 return (error); 707 } 708 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 709 } 710 } else { 711 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 712 if (error) { 713 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 714 return (error); 715 } 716 717 dprintf(("ntfs_lookup: found ino: %u\n", 718 (uint32_t)VTONT(*ap->a_vpp)->i_number)); 719 720 if (!lockparent) { 721 VOP__UNLOCK(dvp, 0); 722 cnp->cn_flags |= CNP_PDIRUNLOCK; 723 } 724 } 725 return (error); 726 } 727 728 /* 729 * Flush the blocks of a file to disk. 730 * 731 * This function is worthless for vnodes that represent directories. Maybe we 732 * could just do a sync if they try an fsync on a directory file. 733 * 734 * ntfs_fsync(struct vnode *a_vp, int a_waitfor) 735 */ 736 static int 737 ntfs_fsync(struct vop_fsync_args *ap) 738 { 739 return (0); 740 } 741 742 /* 743 * Return POSIX pathconf information applicable to NTFS filesystem 744 */ 745 int 746 ntfs_pathconf(struct vop_pathconf_args *ap) 747 { 748 switch (ap->a_name) { 749 case _PC_LINK_MAX: 750 *ap->a_retval = 1; 751 return (0); 752 case _PC_NAME_MAX: 753 *ap->a_retval = NTFS_MAXFILENAME; 754 return (0); 755 case _PC_PATH_MAX: 756 *ap->a_retval = PATH_MAX; 757 return (0); 758 case _PC_CHOWN_RESTRICTED: 759 *ap->a_retval = 1; 760 return (0); 761 case _PC_NO_TRUNC: 762 *ap->a_retval = 0; 763 return (0); 764 default: 765 return (EINVAL); 766 } 767 /* NOTREACHED */ 768 } 769 770 /* 771 * Global vfs data structures 772 */ 773 struct vop_ops ntfs_vnode_vops = { 774 .vop_default = vop_defaultop, 775 .vop_getattr = ntfs_getattr, 776 .vop_inactive = ntfs_inactive, 777 .vop_reclaim = ntfs_reclaim, 778 .vop_print = ntfs_print, 779 .vop_pathconf = ntfs_pathconf, 780 .vop_old_lookup = ntfs_lookup, 781 .vop_access = ntfs_access, 782 .vop_close = ntfs_close, 783 .vop_open = ntfs_open, 784 .vop_readdir = ntfs_readdir, 785 .vop_fsync = ntfs_fsync, 786 .vop_bmap = ntfs_bmap, 787 .vop_getpages = vop_stdgetpages, 788 .vop_putpages = vop_stdputpages, 789 .vop_strategy = ntfs_strategy, 790 .vop_read = ntfs_read, 791 .vop_write = ntfs_write 792 }; 793 794