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 #if defined(__NetBSD__) 56 #include <vm/vm_prot.h> 57 #endif 58 #include <vm/vm_page.h> 59 #include <vm/vm_object.h> 60 #include <vm/vm_pager.h> 61 #if defined(__DragonFly__) 62 #include <vm/vnode_pager.h> 63 #endif 64 #include <vm/vm_extern.h> 65 66 #include <sys/sysctl.h> 67 68 #include <sys/buf2.h> 69 70 #include "ntfs.h" 71 #include "ntfs_inode.h" 72 #include "ntfs_subr.h" 73 #if defined(__NetBSD__) 74 #include <miscfs/specfs/specdev.h> 75 #include <miscfs/genfs/genfs.h> 76 #endif 77 78 #include <sys/unistd.h> /* for pathconf(2) constants */ 79 80 static int ntfs_read (struct vop_read_args *); 81 static int ntfs_write (struct vop_write_args *ap); 82 static int ntfs_getattr (struct vop_getattr_args *ap); 83 static int ntfs_inactive (struct vop_inactive_args *ap); 84 static int ntfs_print (struct vop_print_args *ap); 85 static int ntfs_reclaim (struct vop_reclaim_args *ap); 86 static int ntfs_strategy (struct vop_strategy_args *ap); 87 static int ntfs_access (struct vop_access_args *ap); 88 static int ntfs_open (struct vop_open_args *ap); 89 static int ntfs_close (struct vop_close_args *ap); 90 static int ntfs_readdir (struct vop_readdir_args *ap); 91 static int ntfs_lookup (struct vop_old_lookup_args *ap); 92 static int ntfs_bmap (struct vop_bmap_args *ap); 93 #if defined(__DragonFly__) 94 static int ntfs_fsync (struct vop_fsync_args *ap); 95 #else 96 static int ntfs_bypass (struct vop_generic_args *); 97 #endif 98 static int ntfs_pathconf (struct vop_pathconf_args *); 99 100 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 101 102 /* 103 * This is a noop, simply returning what one has been given. 104 * 105 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, 106 * daddr_t *a_doffsetp, int *a_runp, int *a_runb) 107 */ 108 int 109 ntfs_bmap(struct vop_bmap_args *ap) 110 { 111 dprintf(("ntfs_bmap: vn: %p, blk: %u\n", ap->a_vp, 112 (u_int32_t)ap->a_loffset)); 113 if (ap->a_doffsetp != NULL) 114 *ap->a_doffsetp = ap->a_loffset; 115 if (ap->a_runp != NULL) 116 *ap->a_runp = 0; 117 #if !defined(__NetBSD__) 118 if (ap->a_runb != NULL) 119 *ap->a_runb = 0; 120 #endif 121 return (0); 122 } 123 124 /* 125 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 126 * struct ucred *a_cred) 127 */ 128 static int 129 ntfs_read(struct vop_read_args *ap) 130 { 131 struct vnode *vp = ap->a_vp; 132 struct fnode *fp = VTOF(vp); 133 struct ntnode *ip = FTONT(fp); 134 struct uio *uio = ap->a_uio; 135 struct ntfsmount *ntmp = ip->i_mp; 136 struct buf *bp; 137 daddr_t cn; 138 int resid, off, toread; 139 int error; 140 141 dprintf(("ntfs_read: ino: %ju, off: %u resid: %zd, segflg: %d\n", 142 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 143 uio->uio_resid, uio->uio_segflg)); 144 145 dprintf(("ntfs_read: filesize: %ju", (uintmax_t)fp->f_size)); 146 147 /* don't allow reading after end of file */ 148 if (uio->uio_offset > fp->f_size) 149 return (0); 150 151 resid = (int)szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 152 153 dprintf((", resid: %d\n", resid)); 154 155 error = 0; 156 while (resid) { 157 cn = ntfs_btocn(uio->uio_offset); 158 off = ntfs_btocnoff(uio->uio_offset); 159 160 toread = min(off + resid, ntfs_cntob(1)); 161 162 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); 163 if (error) { 164 brelse(bp); 165 break; 166 } 167 168 error = uiomovebp(bp, bp->b_data + off, toread - off, uio); 169 if(error) { 170 brelse(bp); 171 break; 172 } 173 brelse(bp); 174 175 resid -= toread - off; 176 } 177 178 return (error); 179 } 180 181 #if !defined(__DragonFly__) 182 183 /* 184 * ntfs_bypass() 185 */ 186 static int 187 ntfs_bypass(struct vop_generic_args *ap) 188 { 189 int error = ENOTTY; 190 dprintf(("ntfs_bypass: %s\n", ap->a_desc->sd_name)); 191 return (error); 192 } 193 194 #endif 195 196 /* 197 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 198 */ 199 static int 200 ntfs_getattr(struct vop_getattr_args *ap) 201 { 202 struct vnode *vp = ap->a_vp; 203 struct fnode *fp = VTOF(vp); 204 struct ntnode *ip = FTONT(fp); 205 struct vattr *vap = ap->a_vap; 206 207 dprintf(("ntfs_getattr: %ju, flags: %d\n", (uintmax_t)ip->i_number, 208 ip->i_flag)); 209 210 #if defined(__DragonFly__) 211 vap->va_fsid = dev2udev(ip->i_dev); 212 #else /* NetBSD */ 213 vap->va_fsid = ip->i_dev; 214 #endif 215 vap->va_fileid = ip->i_number; 216 vap->va_mode = ip->i_mp->ntm_mode; 217 vap->va_nlink = ip->i_nlink; 218 vap->va_uid = ip->i_mp->ntm_uid; 219 vap->va_gid = ip->i_mp->ntm_gid; 220 vap->va_rmajor = VNOVAL; 221 vap->va_rminor = VNOVAL; 222 vap->va_size = fp->f_size; 223 vap->va_bytes = fp->f_allocated; 224 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 225 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 226 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 227 vap->va_flags = ip->i_flag; 228 vap->va_gen = 0; 229 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 230 vap->va_type = vp->v_type; 231 vap->va_filerev = 0; 232 return (0); 233 } 234 235 236 /* 237 * Last reference to an ntnode. If necessary, write or delete it. 238 * 239 * ntfs_inactive(struct vnode *a_vp) 240 */ 241 int 242 ntfs_inactive(struct vop_inactive_args *ap) 243 { 244 struct vnode *vp = ap->a_vp; 245 #ifdef NTFS_DEBUG 246 struct ntnode *ip = VTONT(vp); 247 #endif 248 249 dprintf(("ntfs_inactive: vnode: %p, ntnode: %ju\n", vp, (uintmax_t)ip->i_number)); 250 251 if (ntfs_prtactive && VREFCNT(vp) > 1) 252 vprint("ntfs_inactive: pushing active", vp); 253 254 /* 255 * XXX since we don't support any filesystem changes 256 * right now, nothing more needs to be done 257 */ 258 return (0); 259 } 260 261 /* 262 * Reclaim an fnode/ntnode so that it can be used for other purposes. 263 * 264 * ntfs_reclaim(struct vnode *a_vp) 265 */ 266 int 267 ntfs_reclaim(struct vop_reclaim_args *ap) 268 { 269 struct vnode *vp = ap->a_vp; 270 struct fnode *fp = VTOF(vp); 271 struct ntnode *ip = FTONT(fp); 272 int error; 273 274 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %ju\n", vp, (uintmax_t)ip->i_number)); 275 276 if (ntfs_prtactive && VREFCNT(vp) > 1) 277 vprint("ntfs_reclaim: pushing active", vp); 278 279 if ((error = ntfs_ntget(ip)) != 0) 280 return (error); 281 282 ntfs_frele(fp); 283 ntfs_ntput(ip); 284 vp->v_data = NULL; 285 286 return (0); 287 } 288 289 /* 290 * ntfs_print(struct vnode *a_vp) 291 */ 292 static int 293 ntfs_print(struct vop_print_args *ap) 294 { 295 return (0); 296 } 297 298 /* 299 * Calculate the logical to physical mapping if not done already, 300 * then call the device strategy routine. 301 * 302 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio) 303 */ 304 int 305 ntfs_strategy(struct vop_strategy_args *ap) 306 { 307 struct bio *bio = ap->a_bio; 308 struct buf *bp = bio->bio_buf; 309 struct vnode *vp = ap->a_vp; 310 struct fnode *fp = VTOF(vp); 311 struct ntnode *ip = FTONT(fp); 312 struct ntfsmount *ntmp = ip->i_mp; 313 u_int32_t toread; 314 u_int32_t towrite; 315 size_t tmp; 316 int error; 317 318 dprintf(("ntfs_strategy: loffset: %u, doffset: %u\n", 319 (uint32_t)bp->b_loffset, (uint32_t)bio->bio_offset)); 320 321 dprintf(("strategy: bcount: %u flags: 0x%x\n", 322 bp->b_bcount, bp->b_flags)); 323 324 bp->b_error = 0; 325 326 switch(bp->b_cmd) { 327 case BUF_CMD_READ: 328 if (bio->bio_offset >= fp->f_size) { 329 clrbuf(bp); 330 error = 0; 331 } else { 332 toread = min(bp->b_bcount, 333 fp->f_size - bio->bio_offset); 334 dprintf(("ntfs_strategy: toread: %u, fsize: %ju\n", 335 toread, (uintmax_t)fp->f_size)); 336 337 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 338 fp->f_attrname, bio->bio_offset, 339 toread, bp->b_data, NULL); 340 341 if (error) { 342 kprintf("ntfs_strategy: ntfs_readattr failed\n"); 343 bp->b_error = error; 344 bp->b_flags |= B_ERROR; 345 } 346 347 bzero(bp->b_data + toread, bp->b_bcount - toread); 348 } 349 break; 350 case BUF_CMD_WRITE: 351 if (bio->bio_offset + bp->b_bcount >= fp->f_size) { 352 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n"); 353 bp->b_error = error = EFBIG; 354 bp->b_flags |= B_ERROR; 355 } else { 356 towrite = min(bp->b_bcount, 357 fp->f_size - bio->bio_offset); 358 dprintf(("ntfs_strategy: towrite: %d, fsize: %ju\n", 359 towrite, (uintmax_t)fp->f_size)); 360 361 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 362 fp->f_attrname, bio->bio_offset,towrite, 363 bp->b_data, &tmp, NULL); 364 365 if (error) { 366 kprintf("ntfs_strategy: ntfs_writeattr fail\n"); 367 bp->b_error = error; 368 bp->b_flags |= B_ERROR; 369 } 370 } 371 break; 372 default: 373 panic("ntfs: bad b_cmd %d", bp->b_cmd); 374 } 375 biodone(bio); 376 return (error); 377 } 378 379 /* 380 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 381 * struct ucred *a_cred) 382 */ 383 static int 384 ntfs_write(struct vop_write_args *ap) 385 { 386 struct vnode *vp = ap->a_vp; 387 struct fnode *fp = VTOF(vp); 388 struct ntnode *ip = FTONT(fp); 389 struct uio *uio = ap->a_uio; 390 struct ntfsmount *ntmp = ip->i_mp; 391 size_t towrite; 392 size_t written; 393 int error; 394 395 dprintf(("ntfs_write: ino: %ju, off: %u resid: %zd, segflg: %d\n", 396 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 397 uio->uio_resid, uio->uio_segflg)); 398 dprintf(("ntfs_write: filesize: %ju ", (uintmax_t)fp->f_size)); 399 400 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 401 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 402 return (EFBIG); 403 } 404 if (uio->uio_offset > fp->f_size) 405 return (EFBIG); 406 407 towrite = szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 408 409 dprintf((", towrite: %zd\n", towrite)); 410 411 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 412 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 413 #ifdef NTFS_DEBUG 414 if (error) 415 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error); 416 #endif 417 418 return (error); 419 } 420 421 /* 422 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 423 */ 424 int 425 ntfs_access(struct vop_access_args *ap) 426 { 427 struct vnode *vp = ap->a_vp; 428 struct ntnode *ip = VTONT(vp); 429 struct ucred *cred = ap->a_cred; 430 mode_t mask, mode = ap->a_mode; 431 gid_t *gp; 432 int i; 433 #ifdef QUOTA 434 int error; 435 #endif 436 437 dprintf(("ntfs_access: %ju\n", (uintmax_t)ip->i_number)); 438 439 /* 440 * Disallow write attempts on read-only file systems; 441 * unless the file is a socket, fifo, or a block or 442 * character device resident on the file system. 443 */ 444 if (mode & VWRITE) { 445 switch ((int)vp->v_type) { 446 case VDIR: 447 case VLNK: 448 case VREG: 449 if (vp->v_mount->mnt_flag & MNT_RDONLY) 450 return (EROFS); 451 #ifdef QUOTA 452 if (error = getinoquota(ip)) 453 return (error); 454 #endif 455 break; 456 } 457 } 458 459 /* Otherwise, user id 0 always gets access. */ 460 if (cred->cr_uid == 0) 461 return (0); 462 463 mask = 0; 464 465 /* Otherwise, check the owner. */ 466 if (cred->cr_uid == ip->i_mp->ntm_uid) { 467 if (mode & VEXEC) 468 mask |= S_IXUSR; 469 if (mode & VREAD) 470 mask |= S_IRUSR; 471 if (mode & VWRITE) 472 mask |= S_IWUSR; 473 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 474 } 475 476 /* Otherwise, check the groups. */ 477 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 478 if (ip->i_mp->ntm_gid == *gp) { 479 if (mode & VEXEC) 480 mask |= S_IXGRP; 481 if (mode & VREAD) 482 mask |= S_IRGRP; 483 if (mode & VWRITE) 484 mask |= S_IWGRP; 485 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 486 } 487 488 /* Otherwise, check everyone else. */ 489 if (mode & VEXEC) 490 mask |= S_IXOTH; 491 if (mode & VREAD) 492 mask |= S_IROTH; 493 if (mode & VWRITE) 494 mask |= S_IWOTH; 495 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 496 } 497 498 /* 499 * Open called. 500 * 501 * Nothing to do. 502 * 503 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 504 * struct file *a_fp) 505 */ 506 /* ARGSUSED */ 507 static int 508 ntfs_open(struct vop_open_args *ap) 509 { 510 return (vop_stdopen(ap)); 511 } 512 513 /* 514 * Close called. 515 * 516 * Update the times on the inode. 517 * 518 * ntfs_close(struct vnode *a_vp, int a_fflag) 519 */ 520 /* ARGSUSED */ 521 static int 522 ntfs_close(struct vop_close_args *ap) 523 { 524 #if NTFS_DEBUG 525 struct vnode *vp = ap->a_vp; 526 struct ntnode *ip = VTONT(vp); 527 528 kprintf("ntfs_close: %ju\n", (uintmax_t)ip->i_number); 529 #endif 530 531 return (vop_stdclose(ap)); 532 } 533 534 /* 535 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 536 * int *a_ncookies, off_t **cookies) 537 */ 538 int 539 ntfs_readdir(struct vop_readdir_args *ap) 540 { 541 struct vnode *vp = ap->a_vp; 542 struct fnode *fp = VTOF(vp); 543 struct ntnode *ip = FTONT(fp); 544 struct uio *uio = ap->a_uio; 545 struct ntfsmount *ntmp = ip->i_mp; 546 int i, j, error = 0; 547 wchar c; 548 u_int32_t faked = 0, num, off; 549 int ncookies = 0; 550 char convname[NTFS_MAXFILENAME + 1]; 551 552 dprintf(("ntfs_readdir %ju off: %u resid: %zd\n", 553 (uintmax_t)ip->i_number, (uint32_t)uio->uio_offset, 554 uio->uio_resid)); 555 556 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 557 return (EINVAL); 558 error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_FAILRECLAIM); 559 if (error) 560 return (error); 561 562 /* 563 * uio->uio_offset carries the number of the entry 564 * where we should start returning dirents. 565 * 566 * We fake up "." if we're not reading the FS root 567 * and we always fake up "..". 568 * 569 * off contains the entry we are starting at, 570 * num increments while we are reading. 571 */ 572 573 off = num = uio->uio_offset; 574 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 575 576 /* Simulate . in every dir except ROOT */ 577 if (ip->i_number != NTFS_ROOTINO && num == 0) { 578 if (vop_write_dirent(&error, uio, ip->i_number, 579 DT_DIR, 1, ".")) 580 goto done; 581 if (error) 582 goto done; 583 584 num++; 585 ncookies++; 586 } 587 588 /* Simulate .. in every dir including ROOT */ 589 if (num == faked - 1) { 590 /* XXX NTFS_ROOTINO seems to be wrong here */ 591 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 592 DT_DIR, 2, "..")) 593 goto readdone; 594 if (error) 595 goto done; 596 597 num++; 598 ncookies++; 599 } 600 601 for (;;) { 602 struct attr_indexentry *iep; 603 604 /* 605 * num is the number of the entry we will return, 606 * but ntfs_ntreaddir takes the entry number of the 607 * ntfs directory listing, so subtract the faked 608 * . and .. entries. 609 */ 610 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 611 612 if (error) 613 goto done; 614 615 if( NULL == iep ) 616 break; 617 618 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 619 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 620 { 621 if(!ntfs_isnamepermitted(ntmp,iep)) 622 continue; 623 for(i=0, j=0; i < iep->ie_fnamelen; i++, j++) { 624 c = NTFS_U28(iep->ie_fname[i]); 625 if (c&0xFF00) 626 convname[j++] = (char)(c>>8); 627 convname[j] = (char)c&0xFF; 628 } 629 convname[j] = '\0'; 630 if (vop_write_dirent(&error, uio, iep->ie_number, 631 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 632 j, convname)) 633 goto readdone; 634 635 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 636 "flag: %d, %s\n", 637 ncookies, convname, iep->ie_fnametype, 638 iep->ie_flag, 639 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 640 "dir" : "reg")); 641 642 if (error) 643 goto done; 644 645 ncookies++; 646 num++; 647 } 648 } 649 650 readdone: 651 uio->uio_offset = num; 652 653 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 654 ncookies,(u_int)(uio->uio_offset - off))); 655 dprintf(("ntfs_readdir: off: %u resid: %zd\n", 656 (uint32_t)uio->uio_offset, uio->uio_resid)); 657 658 if (!error && ap->a_ncookies != NULL) { 659 off_t *cookies; 660 off_t *cookiep; 661 662 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 663 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 664 panic("ntfs_readdir: unexpected uio from NFS server"); 665 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 666 cookiep = cookies; 667 while (off < num) 668 *cookiep++ = ++off; 669 670 *ap->a_ncookies = ncookies; 671 *ap->a_cookies = cookies; 672 } 673 /* 674 if (ap->a_eofflag) 675 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset; 676 */ 677 done: 678 vn_unlock(vp); 679 return (error); 680 } 681 682 /* 683 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 684 * struct componentname *a_cnp) 685 */ 686 int 687 ntfs_lookup(struct vop_old_lookup_args *ap) 688 { 689 struct vnode *dvp = ap->a_dvp; 690 struct ntnode *dip = VTONT(dvp); 691 struct ntfsmount *ntmp = dip->i_mp; 692 struct componentname *cnp = ap->a_cnp; 693 int error; 694 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 695 #if NTFS_DEBUG 696 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 697 #endif 698 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %ju, lp: %d, wp: %d \n", 699 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 700 (uintmax_t)dip->i_number, lockparent, wantparent)); 701 702 *ap->a_vpp = NULL; 703 704 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 705 dprintf(("ntfs_lookup: faking . directory in %u\n", 706 (uint32_t)dip->i_number)); 707 708 vref(dvp); 709 *ap->a_vpp = dvp; 710 error = 0; 711 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 712 struct ntvattr *vap; 713 714 dprintf(("ntfs_lookup: faking .. directory in %d\n", 715 (uint32_t)dip->i_number)); 716 717 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 718 if(error) 719 return (error); 720 721 VOP__UNLOCK(dvp, 0); 722 cnp->cn_flags |= CNP_PDIRUNLOCK; 723 724 dprintf(("ntfs_lookup: parentdir: %d\n", 725 vap->va_a_name->n_pnumber)); 726 error = VFS_VGET(ntmp->ntm_mountp, NULL, 727 vap->va_a_name->n_pnumber,ap->a_vpp); 728 ntfs_ntvattrrele(vap); 729 if (error) { 730 if (VOP_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 731 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 732 return (error); 733 } 734 735 if (lockparent) { 736 error = VOP_LOCK(dvp, LK_EXCLUSIVE); 737 if (error) { 738 vput(*ap->a_vpp); 739 *ap->a_vpp = NULL; 740 return (error); 741 } 742 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 743 } 744 } else { 745 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 746 if (error) { 747 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 748 return (error); 749 } 750 751 dprintf(("ntfs_lookup: found ino: %u\n", 752 (uint32_t)VTONT(*ap->a_vpp)->i_number)); 753 754 if (!lockparent) { 755 VOP__UNLOCK(dvp, 0); 756 cnp->cn_flags |= CNP_PDIRUNLOCK; 757 } 758 } 759 return (error); 760 } 761 762 #if defined(__DragonFly__) 763 /* 764 * Flush the blocks of a file to disk. 765 * 766 * This function is worthless for vnodes that represent directories. Maybe we 767 * could just do a sync if they try an fsync on a directory file. 768 * 769 * ntfs_fsync(struct vnode *a_vp, int a_waitfor) 770 */ 771 static int 772 ntfs_fsync(struct vop_fsync_args *ap) 773 { 774 return (0); 775 } 776 #endif 777 778 /* 779 * Return POSIX pathconf information applicable to NTFS filesystem 780 */ 781 int 782 ntfs_pathconf(struct vop_pathconf_args *ap) 783 { 784 switch (ap->a_name) { 785 case _PC_LINK_MAX: 786 *ap->a_retval = 1; 787 return (0); 788 case _PC_NAME_MAX: 789 *ap->a_retval = NTFS_MAXFILENAME; 790 return (0); 791 case _PC_PATH_MAX: 792 *ap->a_retval = PATH_MAX; 793 return (0); 794 case _PC_CHOWN_RESTRICTED: 795 *ap->a_retval = 1; 796 return (0); 797 case _PC_NO_TRUNC: 798 *ap->a_retval = 0; 799 return (0); 800 #if defined(__NetBSD__) 801 case _PC_SYNC_IO: 802 *ap->a_retval = 1; 803 return (0); 804 case _PC_FILESIZEBITS: 805 *ap->a_retval = 64; 806 return (0); 807 #endif 808 default: 809 return (EINVAL); 810 } 811 /* NOTREACHED */ 812 } 813 814 /* 815 * Global vfs data structures 816 */ 817 struct vop_ops ntfs_vnode_vops = { 818 .vop_default = vop_defaultop, 819 .vop_getattr = ntfs_getattr, 820 .vop_inactive = ntfs_inactive, 821 .vop_reclaim = ntfs_reclaim, 822 .vop_print = ntfs_print, 823 .vop_pathconf = ntfs_pathconf, 824 .vop_old_lookup = ntfs_lookup, 825 .vop_access = ntfs_access, 826 .vop_close = ntfs_close, 827 .vop_open = ntfs_open, 828 .vop_readdir = ntfs_readdir, 829 .vop_fsync = ntfs_fsync, 830 .vop_bmap = ntfs_bmap, 831 .vop_getpages = vop_stdgetpages, 832 .vop_putpages = vop_stdputpages, 833 .vop_strategy = ntfs_strategy, 834 .vop_read = ntfs_read, 835 .vop_write = ntfs_write 836 }; 837 838