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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * $FreeBSD: src/sys/ntfs/ntfs_vnops.c,v 1.9.2.4 2002/08/06 19:35:18 semenu Exp $ 39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.44 2007/11/20 21:03:50 dillon Exp $ 40 * 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/time.h> 47 #include <sys/types.h> 48 #include <sys/stat.h> 49 #include <sys/vnode.h> 50 #include <sys/mount.h> 51 #include <sys/proc.h> 52 #include <sys/namei.h> 53 #include <sys/malloc.h> 54 #include <sys/buf.h> 55 #include <sys/dirent.h> 56 #include <machine/limits.h> 57 58 #include <vm/vm.h> 59 #include <vm/vm_param.h> 60 #if defined(__NetBSD__) 61 #include <vm/vm_prot.h> 62 #endif 63 #include <vm/vm_page.h> 64 #include <vm/vm_object.h> 65 #include <vm/vm_pager.h> 66 #if defined(__DragonFly__) 67 #include <vm/vnode_pager.h> 68 #endif 69 #include <vm/vm_extern.h> 70 71 #include <sys/sysctl.h> 72 73 /*#define NTFS_DEBUG 1*/ 74 #include "ntfs.h" 75 #include "ntfs_inode.h" 76 #include "ntfs_subr.h" 77 #if defined(__NetBSD__) 78 #include <miscfs/specfs/specdev.h> 79 #include <miscfs/genfs/genfs.h> 80 #endif 81 82 #include <sys/unistd.h> /* for pathconf(2) constants */ 83 84 static int ntfs_read (struct vop_read_args *); 85 static int ntfs_write (struct vop_write_args *ap); 86 static int ntfs_getattr (struct vop_getattr_args *ap); 87 static int ntfs_inactive (struct vop_inactive_args *ap); 88 static int ntfs_print (struct vop_print_args *ap); 89 static int ntfs_reclaim (struct vop_reclaim_args *ap); 90 static int ntfs_strategy (struct vop_strategy_args *ap); 91 static int ntfs_access (struct vop_access_args *ap); 92 static int ntfs_open (struct vop_open_args *ap); 93 static int ntfs_close (struct vop_close_args *ap); 94 static int ntfs_readdir (struct vop_readdir_args *ap); 95 static int ntfs_lookup (struct vop_old_lookup_args *ap); 96 static int ntfs_bmap (struct vop_bmap_args *ap); 97 #if defined(__DragonFly__) 98 static int ntfs_fsync (struct vop_fsync_args *ap); 99 #else 100 static int ntfs_bypass (struct vop_generic_args *); 101 #endif 102 static int ntfs_pathconf (struct vop_pathconf_args *); 103 104 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 105 106 /* 107 * This is a noop, simply returning what one has been given. 108 * 109 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, 110 * daddr_t *a_doffsetp, int *a_runp, int *a_runb) 111 */ 112 int 113 ntfs_bmap(struct vop_bmap_args *ap) 114 { 115 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 116 if (ap->a_doffsetp != NULL) 117 *ap->a_doffsetp = ap->a_loffset; 118 if (ap->a_runp != NULL) 119 *ap->a_runp = 0; 120 #if !defined(__NetBSD__) 121 if (ap->a_runb != NULL) 122 *ap->a_runb = 0; 123 #endif 124 return (0); 125 } 126 127 /* 128 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 129 * struct ucred *a_cred) 130 */ 131 static int 132 ntfs_read(struct vop_read_args *ap) 133 { 134 struct vnode *vp = ap->a_vp; 135 struct fnode *fp = VTOF(vp); 136 struct ntnode *ip = FTONT(fp); 137 struct uio *uio = ap->a_uio; 138 struct ntfsmount *ntmp = ip->i_mp; 139 struct buf *bp; 140 daddr_t cn; 141 int resid, off, toread; 142 int error; 143 144 dprintf(("ntfs_read: ino: %d, off: %d resid: %ld, segflg: %d\n", 145 ip->i_number, (u_int32_t)uio->uio_offset, 146 uio->uio_resid, uio->uio_segflg)); 147 148 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 149 150 /* don't allow reading after end of file */ 151 if (uio->uio_offset > fp->f_size) 152 return (0); 153 154 resid = (int)szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 155 156 dprintf((", resid: %d\n", resid)); 157 158 error = 0; 159 while (resid) { 160 cn = ntfs_btocn(uio->uio_offset); 161 off = ntfs_btocnoff(uio->uio_offset); 162 163 toread = min(off + resid, ntfs_cntob(1)); 164 165 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); 166 if (error) { 167 brelse(bp); 168 break; 169 } 170 171 error = uiomove(bp->b_data + off, toread - off, uio); 172 if(error) { 173 brelse(bp); 174 break; 175 } 176 brelse(bp); 177 178 resid -= toread - off; 179 } 180 181 return (error); 182 } 183 184 #if !defined(__DragonFly__) 185 186 /* 187 * ntfs_bypass() 188 */ 189 static int 190 ntfs_bypass(struct vop_generic_args *ap) 191 { 192 int error = ENOTTY; 193 dprintf(("ntfs_bypass: %s\n", ap->a_desc->sd_name)); 194 return (error); 195 } 196 197 #endif 198 199 /* 200 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 201 */ 202 static int 203 ntfs_getattr(struct vop_getattr_args *ap) 204 { 205 struct vnode *vp = ap->a_vp; 206 struct fnode *fp = VTOF(vp); 207 struct ntnode *ip = FTONT(fp); 208 struct vattr *vap = ap->a_vap; 209 210 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 211 212 #if defined(__DragonFly__) 213 vap->va_fsid = dev2udev(ip->i_dev); 214 #else /* NetBSD */ 215 vap->va_fsid = ip->i_dev; 216 #endif 217 vap->va_fileid = ip->i_number; 218 vap->va_mode = ip->i_mp->ntm_mode; 219 vap->va_nlink = ip->i_nlink; 220 vap->va_uid = ip->i_mp->ntm_uid; 221 vap->va_gid = ip->i_mp->ntm_gid; 222 vap->va_rmajor = VNOVAL; 223 vap->va_rminor = VNOVAL; 224 vap->va_size = fp->f_size; 225 vap->va_bytes = fp->f_allocated; 226 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 227 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 228 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 229 vap->va_flags = ip->i_flag; 230 vap->va_gen = 0; 231 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 232 vap->va_type = vp->v_type; 233 vap->va_filerev = 0; 234 return (0); 235 } 236 237 238 /* 239 * Last reference to an ntnode. If necessary, write or delete it. 240 * 241 * ntfs_inactive(struct vnode *a_vp) 242 */ 243 int 244 ntfs_inactive(struct vop_inactive_args *ap) 245 { 246 struct vnode *vp = ap->a_vp; 247 #ifdef NTFS_DEBUG 248 struct ntnode *ip = VTONT(vp); 249 #endif 250 251 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 252 253 if (ntfs_prtactive && vp->v_sysref.refcnt > 1) 254 vprint("ntfs_inactive: pushing active", vp); 255 256 /* 257 * XXX since we don't support any filesystem changes 258 * right now, nothing more needs to be done 259 */ 260 return (0); 261 } 262 263 /* 264 * Reclaim an fnode/ntnode so that it can be used for other purposes. 265 * 266 * ntfs_reclaim(struct vnode *a_vp) 267 */ 268 int 269 ntfs_reclaim(struct vop_reclaim_args *ap) 270 { 271 struct vnode *vp = ap->a_vp; 272 struct fnode *fp = VTOF(vp); 273 struct ntnode *ip = FTONT(fp); 274 int error; 275 276 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 277 278 if (ntfs_prtactive && vp->v_sysref.refcnt > 1) 279 vprint("ntfs_reclaim: pushing active", vp); 280 281 if ((error = ntfs_ntget(ip)) != 0) 282 return (error); 283 284 ntfs_frele(fp); 285 ntfs_ntput(ip); 286 vp->v_data = NULL; 287 288 return (0); 289 } 290 291 /* 292 * ntfs_print(struct vnode *a_vp) 293 */ 294 static int 295 ntfs_print(struct vop_print_args *ap) 296 { 297 return (0); 298 } 299 300 /* 301 * Calculate the logical to physical mapping if not done already, 302 * then call the device strategy routine. 303 * 304 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio) 305 */ 306 int 307 ntfs_strategy(struct vop_strategy_args *ap) 308 { 309 struct bio *bio = ap->a_bio; 310 struct buf *bp = bio->bio_buf; 311 struct vnode *vp = ap->a_vp; 312 struct fnode *fp = VTOF(vp); 313 struct ntnode *ip = FTONT(fp); 314 struct ntfsmount *ntmp = ip->i_mp; 315 u_int32_t toread; 316 u_int32_t towrite; 317 size_t tmp; 318 int error; 319 320 dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n", 321 bp->b_loffset, bio->bio_offset)); 322 323 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 324 (u_int32_t)bp->b_bcount,bp->b_flags)); 325 326 bp->b_error = 0; 327 328 switch(bp->b_cmd) { 329 case BUF_CMD_READ: 330 if (bio->bio_offset >= fp->f_size) { 331 clrbuf(bp); 332 error = 0; 333 } else { 334 toread = min(bp->b_bcount, 335 fp->f_size - bio->bio_offset); 336 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 337 toread,(u_int32_t)fp->f_size)); 338 339 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 340 fp->f_attrname, bio->bio_offset, 341 toread, bp->b_data, NULL); 342 343 if (error) { 344 kprintf("ntfs_strategy: ntfs_readattr failed\n"); 345 bp->b_error = error; 346 bp->b_flags |= B_ERROR; 347 } 348 349 bzero(bp->b_data + toread, bp->b_bcount - toread); 350 } 351 break; 352 case BUF_CMD_WRITE: 353 if (bio->bio_offset + bp->b_bcount >= fp->f_size) { 354 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n"); 355 bp->b_error = error = EFBIG; 356 bp->b_flags |= B_ERROR; 357 } else { 358 towrite = min(bp->b_bcount, 359 fp->f_size - bio->bio_offset); 360 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 361 towrite,(u_int32_t)fp->f_size)); 362 363 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 364 fp->f_attrname, bio->bio_offset,towrite, 365 bp->b_data, &tmp, NULL); 366 367 if (error) { 368 kprintf("ntfs_strategy: ntfs_writeattr fail\n"); 369 bp->b_error = error; 370 bp->b_flags |= B_ERROR; 371 } 372 } 373 break; 374 default: 375 panic("ntfs: bad b_cmd %d\n", bp->b_cmd); 376 } 377 biodone(bio); 378 return (error); 379 } 380 381 /* 382 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 383 * struct ucred *a_cred) 384 */ 385 static int 386 ntfs_write(struct vop_write_args *ap) 387 { 388 struct vnode *vp = ap->a_vp; 389 struct fnode *fp = VTOF(vp); 390 struct ntnode *ip = FTONT(fp); 391 struct uio *uio = ap->a_uio; 392 struct ntfsmount *ntmp = ip->i_mp; 393 size_t towrite; 394 size_t written; 395 int error; 396 397 dprintf(("ntfs_write: ino: %d, off: %d resid: %ld, segflg: %d\n", 398 ip->i_number, (u_int32_t)uio->uio_offset, 399 uio->uio_resid, uio->uio_segflg)); 400 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 401 402 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 403 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 404 return (EFBIG); 405 } 406 if (uio->uio_offset > fp->f_size) 407 return (EFBIG); 408 409 towrite = szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 410 411 dprintf((", towrite: %ld\n", towrite)); 412 413 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 414 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 415 #ifdef NTFS_DEBUG 416 if (error) 417 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error); 418 #endif 419 420 return (error); 421 } 422 423 /* 424 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 425 */ 426 int 427 ntfs_access(struct vop_access_args *ap) 428 { 429 struct vnode *vp = ap->a_vp; 430 struct ntnode *ip = VTONT(vp); 431 struct ucred *cred = ap->a_cred; 432 mode_t mask, mode = ap->a_mode; 433 gid_t *gp; 434 int i; 435 #ifdef QUOTA 436 int error; 437 #endif 438 439 dprintf(("ntfs_access: %d\n",ip->i_number)); 440 441 /* 442 * Disallow write attempts on read-only file systems; 443 * unless the file is a socket, fifo, or a block or 444 * character device resident on the file system. 445 */ 446 if (mode & VWRITE) { 447 switch ((int)vp->v_type) { 448 case VDIR: 449 case VLNK: 450 case VREG: 451 if (vp->v_mount->mnt_flag & MNT_RDONLY) 452 return (EROFS); 453 #ifdef QUOTA 454 if (error = getinoquota(ip)) 455 return (error); 456 #endif 457 break; 458 } 459 } 460 461 /* Otherwise, user id 0 always gets access. */ 462 if (cred->cr_uid == 0) 463 return (0); 464 465 mask = 0; 466 467 /* Otherwise, check the owner. */ 468 if (cred->cr_uid == ip->i_mp->ntm_uid) { 469 if (mode & VEXEC) 470 mask |= S_IXUSR; 471 if (mode & VREAD) 472 mask |= S_IRUSR; 473 if (mode & VWRITE) 474 mask |= S_IWUSR; 475 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 476 } 477 478 /* Otherwise, check the groups. */ 479 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 480 if (ip->i_mp->ntm_gid == *gp) { 481 if (mode & VEXEC) 482 mask |= S_IXGRP; 483 if (mode & VREAD) 484 mask |= S_IRGRP; 485 if (mode & VWRITE) 486 mask |= S_IWGRP; 487 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 488 } 489 490 /* Otherwise, check everyone else. */ 491 if (mode & VEXEC) 492 mask |= S_IXOTH; 493 if (mode & VREAD) 494 mask |= S_IROTH; 495 if (mode & VWRITE) 496 mask |= S_IWOTH; 497 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 498 } 499 500 /* 501 * Open called. 502 * 503 * Nothing to do. 504 * 505 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 506 * struct file *a_fp) 507 */ 508 /* ARGSUSED */ 509 static int 510 ntfs_open(struct vop_open_args *ap) 511 { 512 return (vop_stdopen(ap)); 513 } 514 515 /* 516 * Close called. 517 * 518 * Update the times on the inode. 519 * 520 * ntfs_close(struct vnode *a_vp, int a_fflag) 521 */ 522 /* ARGSUSED */ 523 static int 524 ntfs_close(struct vop_close_args *ap) 525 { 526 #if NTFS_DEBUG 527 struct vnode *vp = ap->a_vp; 528 struct ntnode *ip = VTONT(vp); 529 530 kprintf("ntfs_close: %d\n",ip->i_number); 531 #endif 532 533 return (vop_stdclose(ap)); 534 } 535 536 /* 537 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 538 * int *a_ncookies, off_t **cookies) 539 */ 540 int 541 ntfs_readdir(struct vop_readdir_args *ap) 542 { 543 struct vnode *vp = ap->a_vp; 544 struct fnode *fp = VTOF(vp); 545 struct ntnode *ip = FTONT(fp); 546 struct uio *uio = ap->a_uio; 547 struct ntfsmount *ntmp = ip->i_mp; 548 int i, error = 0; 549 u_int32_t faked = 0, num, off; 550 int ncookies = 0; 551 char convname[NTFS_MAXFILENAME + 1]; 552 553 dprintf(("ntfs_readdir %d off: %d resid: %ld\n", 554 ip->i_number, (u_int32_t)uio->uio_offset, 555 uio->uio_resid)); 556 557 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 558 return (EINVAL); 559 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0) 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; 623 624 for (i=0; i < iep->ie_fnamelen; i++) 625 convname[i] = NTFS_U28(iep->ie_fname[i]); 626 convname[i] = '\0'; 627 628 if (vop_write_dirent(&error, uio, iep->ie_number, 629 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 630 iep->ie_fnamelen, convname)) 631 goto readdone; 632 633 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 634 "flag: %d, %s\n", 635 ncookies, convname, iep->ie_fnametype, 636 iep->ie_flag, 637 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 638 "dir" : "reg")); 639 640 if (error) 641 goto done; 642 643 ncookies++; 644 num++; 645 } 646 } 647 648 readdone: 649 uio->uio_offset = num; 650 651 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 652 ncookies,(u_int)(uio->uio_offset - off))); 653 dprintf(("ntfs_readdir: off: %d resid: %ld\n", 654 (u_int32_t)uio->uio_offset, uio->uio_resid)); 655 656 if (!error && ap->a_ncookies != NULL) { 657 off_t *cookies; 658 off_t *cookiep; 659 660 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 661 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 662 panic("ntfs_readdir: unexpected uio from NFS server"); 663 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 664 M_TEMP, M_WAITOK); 665 cookiep = cookies; 666 while (off < num) 667 *cookiep++ = ++off; 668 669 *ap->a_ncookies = ncookies; 670 *ap->a_cookies = cookies; 671 } 672 /* 673 if (ap->a_eofflag) 674 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset; 675 */ 676 done: 677 vn_unlock(vp); 678 return (error); 679 } 680 681 /* 682 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 683 * struct componentname *a_cnp) 684 */ 685 int 686 ntfs_lookup(struct vop_old_lookup_args *ap) 687 { 688 struct vnode *dvp = ap->a_dvp; 689 struct ntnode *dip = VTONT(dvp); 690 struct ntfsmount *ntmp = dip->i_mp; 691 struct componentname *cnp = ap->a_cnp; 692 int error; 693 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 694 #if NTFS_DEBUG 695 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 696 #endif 697 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 698 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 699 dip->i_number, lockparent, wantparent)); 700 701 *ap->a_vpp = NULL; 702 703 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 704 dprintf(("ntfs_lookup: faking . directory in %d\n", 705 dip->i_number)); 706 707 vref(dvp); 708 *ap->a_vpp = dvp; 709 error = 0; 710 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 711 struct ntvattr *vap; 712 713 dprintf(("ntfs_lookup: faking .. directory in %d\n", 714 dip->i_number)); 715 716 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 717 if(error) 718 return (error); 719 720 VOP__UNLOCK(dvp, 0); 721 cnp->cn_flags |= CNP_PDIRUNLOCK; 722 723 dprintf(("ntfs_lookup: parentdir: %d\n", 724 vap->va_a_name->n_pnumber)); 725 error = VFS_VGET(ntmp->ntm_mountp, NULL, 726 vap->va_a_name->n_pnumber,ap->a_vpp); 727 ntfs_ntvattrrele(vap); 728 if (error) { 729 if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 730 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 731 return (error); 732 } 733 734 if (lockparent) { 735 error = VN_LOCK(dvp, LK_EXCLUSIVE); 736 if (error) { 737 vput(*ap->a_vpp); 738 *ap->a_vpp = NULL; 739 return (error); 740 } 741 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 742 } 743 } else { 744 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 745 if (error) { 746 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 747 return (error); 748 } 749 750 dprintf(("ntfs_lookup: found ino: %d\n", 751 VTONT(*ap->a_vpp)->i_number)); 752 753 if (!lockparent) 754 VOP__UNLOCK(dvp, 0); 755 } 756 return (error); 757 } 758 759 #if defined(__DragonFly__) 760 /* 761 * Flush the blocks of a file to disk. 762 * 763 * This function is worthless for vnodes that represent directories. Maybe we 764 * could just do a sync if they try an fsync on a directory file. 765 * 766 * ntfs_fsync(struct vnode *a_vp, int a_waitfor) 767 */ 768 static int 769 ntfs_fsync(struct vop_fsync_args *ap) 770 { 771 return (0); 772 } 773 #endif 774 775 /* 776 * Return POSIX pathconf information applicable to NTFS filesystem 777 */ 778 int 779 ntfs_pathconf(struct vop_pathconf_args *ap) 780 { 781 switch (ap->a_name) { 782 case _PC_LINK_MAX: 783 *ap->a_retval = 1; 784 return (0); 785 case _PC_NAME_MAX: 786 *ap->a_retval = NTFS_MAXFILENAME; 787 return (0); 788 case _PC_PATH_MAX: 789 *ap->a_retval = PATH_MAX; 790 return (0); 791 case _PC_CHOWN_RESTRICTED: 792 *ap->a_retval = 1; 793 return (0); 794 case _PC_NO_TRUNC: 795 *ap->a_retval = 0; 796 return (0); 797 #if defined(__NetBSD__) 798 case _PC_SYNC_IO: 799 *ap->a_retval = 1; 800 return (0); 801 case _PC_FILESIZEBITS: 802 *ap->a_retval = 64; 803 return (0); 804 #endif 805 default: 806 return (EINVAL); 807 } 808 /* NOTREACHED */ 809 } 810 811 /* 812 * Global vfs data structures 813 */ 814 struct vop_ops ntfs_vnode_vops = { 815 .vop_default = vop_defaultop, 816 .vop_getattr = ntfs_getattr, 817 .vop_inactive = ntfs_inactive, 818 .vop_reclaim = ntfs_reclaim, 819 .vop_print = ntfs_print, 820 .vop_pathconf = ntfs_pathconf, 821 .vop_old_lookup = ntfs_lookup, 822 .vop_access = ntfs_access, 823 .vop_close = ntfs_close, 824 .vop_open = ntfs_open, 825 .vop_readdir = ntfs_readdir, 826 .vop_fsync = ntfs_fsync, 827 .vop_bmap = ntfs_bmap, 828 .vop_getpages = vop_stdgetpages, 829 .vop_putpages = vop_stdputpages, 830 .vop_strategy = ntfs_strategy, 831 .vop_read = ntfs_read, 832 .vop_write = ntfs_write 833 }; 834 835