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 1.40 2007/05/09 00:53:36 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_getpages (struct vop_getpages_args *ap); 99 static int ntfs_putpages (struct vop_putpages_args *); 100 static int ntfs_fsync (struct vop_fsync_args *ap); 101 #else 102 static int ntfs_bypass (struct vop_generic_args *); 103 #endif 104 static int ntfs_pathconf (struct vop_pathconf_args *); 105 106 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 107 108 #if defined(__DragonFly__) 109 int 110 ntfs_getpages(struct vop_getpages_args *ap) 111 { 112 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 113 ap->a_reqpage); 114 } 115 116 int 117 ntfs_putpages(struct vop_putpages_args *ap) 118 { 119 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 120 ap->a_sync, ap->a_rtvals); 121 } 122 #endif 123 124 /* 125 * This is a noop, simply returning what one has been given. 126 * 127 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, struct vnode **a_vpp, 128 * daddr_t *a_doffsetp, int *a_runp, int *a_runb) 129 */ 130 int 131 ntfs_bmap(struct vop_bmap_args *ap) 132 { 133 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 134 if (ap->a_vpp != NULL) 135 *ap->a_vpp = ap->a_vp; 136 if (ap->a_doffsetp != NULL) 137 *ap->a_doffsetp = ap->a_loffset; 138 if (ap->a_runp != NULL) 139 *ap->a_runp = 0; 140 #if !defined(__NetBSD__) 141 if (ap->a_runb != NULL) 142 *ap->a_runb = 0; 143 #endif 144 return (0); 145 } 146 147 /* 148 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 149 * struct ucred *a_cred) 150 */ 151 static int 152 ntfs_read(struct vop_read_args *ap) 153 { 154 struct vnode *vp = ap->a_vp; 155 struct fnode *fp = VTOF(vp); 156 struct ntnode *ip = FTONT(fp); 157 struct uio *uio = ap->a_uio; 158 struct ntfsmount *ntmp = ip->i_mp; 159 struct buf *bp; 160 daddr_t cn; 161 int resid, off, toread; 162 int error; 163 164 dprintf(("ntfs_read: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 165 166 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 167 168 /* don't allow reading after end of file */ 169 if (uio->uio_offset > fp->f_size) 170 return (0); 171 172 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset); 173 174 dprintf((", resid: %d\n", resid)); 175 176 error = 0; 177 while (resid) { 178 cn = ntfs_btocn(uio->uio_offset); 179 off = ntfs_btocnoff(uio->uio_offset); 180 181 toread = min(off + resid, ntfs_cntob(1)); 182 183 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); 184 if (error) { 185 brelse(bp); 186 break; 187 } 188 189 error = uiomove(bp->b_data + off, toread - off, uio); 190 if(error) { 191 brelse(bp); 192 break; 193 } 194 brelse(bp); 195 196 resid -= toread - off; 197 } 198 199 return (error); 200 } 201 202 #if !defined(__DragonFly__) 203 204 /* 205 * ntfs_bypass() 206 */ 207 static int 208 ntfs_bypass(struct vop_generic_args *ap) 209 { 210 int error = ENOTTY; 211 dprintf(("ntfs_bypass: %s\n", ap->a_desc->sd_name)); 212 return (error); 213 } 214 215 #endif 216 217 /* 218 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred, 219 * struct thread *a_td) 220 */ 221 static int 222 ntfs_getattr(struct vop_getattr_args *ap) 223 { 224 struct vnode *vp = ap->a_vp; 225 struct fnode *fp = VTOF(vp); 226 struct ntnode *ip = FTONT(fp); 227 struct vattr *vap = ap->a_vap; 228 229 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 230 231 #if defined(__DragonFly__) 232 vap->va_fsid = dev2udev(ip->i_dev); 233 #else /* NetBSD */ 234 vap->va_fsid = ip->i_dev; 235 #endif 236 vap->va_fileid = ip->i_number; 237 vap->va_mode = ip->i_mp->ntm_mode; 238 vap->va_nlink = ip->i_nlink; 239 vap->va_uid = ip->i_mp->ntm_uid; 240 vap->va_gid = ip->i_mp->ntm_gid; 241 vap->va_rmajor = VNOVAL; 242 vap->va_rminor = VNOVAL; 243 vap->va_size = fp->f_size; 244 vap->va_bytes = fp->f_allocated; 245 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 246 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 247 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 248 vap->va_flags = ip->i_flag; 249 vap->va_gen = 0; 250 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 251 vap->va_type = vp->v_type; 252 vap->va_filerev = 0; 253 return (0); 254 } 255 256 257 /* 258 * Last reference to an ntnode. If necessary, write or delete it. 259 * 260 * ntfs_inactive(struct vnode *a_vp) 261 */ 262 int 263 ntfs_inactive(struct vop_inactive_args *ap) 264 { 265 struct vnode *vp = ap->a_vp; 266 #ifdef NTFS_DEBUG 267 struct ntnode *ip = VTONT(vp); 268 #endif 269 270 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 271 272 if (ntfs_prtactive && vp->v_sysref.refcnt > 1) 273 vprint("ntfs_inactive: pushing active", vp); 274 275 /* 276 * XXX since we don't support any filesystem changes 277 * right now, nothing more needs to be done 278 */ 279 return (0); 280 } 281 282 /* 283 * Reclaim an fnode/ntnode so that it can be used for other purposes. 284 * 285 * ntfs_reclaim(struct vnode *a_vp) 286 */ 287 int 288 ntfs_reclaim(struct vop_reclaim_args *ap) 289 { 290 struct vnode *vp = ap->a_vp; 291 struct fnode *fp = VTOF(vp); 292 struct ntnode *ip = FTONT(fp); 293 int error; 294 295 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 296 297 if (ntfs_prtactive && vp->v_sysref.refcnt > 1) 298 vprint("ntfs_reclaim: pushing active", vp); 299 300 if ((error = ntfs_ntget(ip)) != 0) 301 return (error); 302 303 ntfs_frele(fp); 304 ntfs_ntput(ip); 305 vp->v_data = NULL; 306 307 return (0); 308 } 309 310 /* 311 * ntfs_print(struct vnode *a_vp) 312 */ 313 static int 314 ntfs_print(struct vop_print_args *ap) 315 { 316 return (0); 317 } 318 319 /* 320 * Calculate the logical to physical mapping if not done already, 321 * then call the device strategy routine. 322 * 323 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio) 324 */ 325 int 326 ntfs_strategy(struct vop_strategy_args *ap) 327 { 328 struct bio *bio = ap->a_bio; 329 struct buf *bp = bio->bio_buf; 330 struct vnode *vp = ap->a_vp; 331 struct fnode *fp = VTOF(vp); 332 struct ntnode *ip = FTONT(fp); 333 struct ntfsmount *ntmp = ip->i_mp; 334 u_int32_t toread; 335 u_int32_t towrite; 336 size_t tmp; 337 int error; 338 339 dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n", 340 bp->b_loffset, bio->bio_offset)); 341 342 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 343 (u_int32_t)bp->b_bcount,bp->b_flags)); 344 345 bp->b_error = 0; 346 347 switch(bp->b_cmd) { 348 case BUF_CMD_READ: 349 if (bio->bio_offset >= fp->f_size) { 350 clrbuf(bp); 351 error = 0; 352 } else { 353 toread = min(bp->b_bcount, 354 fp->f_size - bio->bio_offset); 355 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 356 toread,(u_int32_t)fp->f_size)); 357 358 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 359 fp->f_attrname, bio->bio_offset, 360 toread, bp->b_data, NULL); 361 362 if (error) { 363 kprintf("ntfs_strategy: ntfs_readattr failed\n"); 364 bp->b_error = error; 365 bp->b_flags |= B_ERROR; 366 } 367 368 bzero(bp->b_data + toread, bp->b_bcount - toread); 369 } 370 break; 371 case BUF_CMD_WRITE: 372 if (bio->bio_offset + bp->b_bcount >= fp->f_size) { 373 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n"); 374 bp->b_error = error = EFBIG; 375 bp->b_flags |= B_ERROR; 376 } else { 377 towrite = min(bp->b_bcount, 378 fp->f_size - bio->bio_offset); 379 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 380 towrite,(u_int32_t)fp->f_size)); 381 382 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 383 fp->f_attrname, bio->bio_offset,towrite, 384 bp->b_data, &tmp, NULL); 385 386 if (error) { 387 kprintf("ntfs_strategy: ntfs_writeattr fail\n"); 388 bp->b_error = error; 389 bp->b_flags |= B_ERROR; 390 } 391 } 392 break; 393 default: 394 panic("ntfs: bad b_cmd %d\n", bp->b_cmd); 395 } 396 biodone(bio); 397 return (error); 398 } 399 400 /* 401 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 402 * struct ucred *a_cred) 403 */ 404 static int 405 ntfs_write(struct vop_write_args *ap) 406 { 407 struct vnode *vp = ap->a_vp; 408 struct fnode *fp = VTOF(vp); 409 struct ntnode *ip = FTONT(fp); 410 struct uio *uio = ap->a_uio; 411 struct ntfsmount *ntmp = ip->i_mp; 412 u_int64_t towrite; 413 size_t written; 414 int error; 415 416 dprintf(("ntfs_write: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 417 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 418 419 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 420 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 421 return (EFBIG); 422 } 423 424 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 425 426 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 427 428 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 429 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 430 #ifdef NTFS_DEBUG 431 if (error) 432 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error); 433 #endif 434 435 return (error); 436 } 437 438 /* 439 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 440 * struct thread *a_td) 441 */ 442 int 443 ntfs_access(struct vop_access_args *ap) 444 { 445 struct vnode *vp = ap->a_vp; 446 struct ntnode *ip = VTONT(vp); 447 struct ucred *cred = ap->a_cred; 448 mode_t mask, mode = ap->a_mode; 449 gid_t *gp; 450 int i; 451 #ifdef QUOTA 452 int error; 453 #endif 454 455 dprintf(("ntfs_access: %d\n",ip->i_number)); 456 457 /* 458 * Disallow write attempts on read-only file systems; 459 * unless the file is a socket, fifo, or a block or 460 * character device resident on the file system. 461 */ 462 if (mode & VWRITE) { 463 switch ((int)vp->v_type) { 464 case VDIR: 465 case VLNK: 466 case VREG: 467 if (vp->v_mount->mnt_flag & MNT_RDONLY) 468 return (EROFS); 469 #ifdef QUOTA 470 if (error = getinoquota(ip)) 471 return (error); 472 #endif 473 break; 474 } 475 } 476 477 /* Otherwise, user id 0 always gets access. */ 478 if (cred->cr_uid == 0) 479 return (0); 480 481 mask = 0; 482 483 /* Otherwise, check the owner. */ 484 if (cred->cr_uid == ip->i_mp->ntm_uid) { 485 if (mode & VEXEC) 486 mask |= S_IXUSR; 487 if (mode & VREAD) 488 mask |= S_IRUSR; 489 if (mode & VWRITE) 490 mask |= S_IWUSR; 491 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 492 } 493 494 /* Otherwise, check the groups. */ 495 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 496 if (ip->i_mp->ntm_gid == *gp) { 497 if (mode & VEXEC) 498 mask |= S_IXGRP; 499 if (mode & VREAD) 500 mask |= S_IRGRP; 501 if (mode & VWRITE) 502 mask |= S_IWGRP; 503 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 504 } 505 506 /* Otherwise, check everyone else. */ 507 if (mode & VEXEC) 508 mask |= S_IXOTH; 509 if (mode & VREAD) 510 mask |= S_IROTH; 511 if (mode & VWRITE) 512 mask |= S_IWOTH; 513 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 514 } 515 516 /* 517 * Open called. 518 * 519 * Nothing to do. 520 * 521 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 522 * struct thread *a_td) 523 */ 524 /* ARGSUSED */ 525 static int 526 ntfs_open(struct vop_open_args *ap) 527 { 528 return (vop_stdopen(ap)); 529 } 530 531 /* 532 * Close called. 533 * 534 * Update the times on the inode. 535 * 536 * ntfs_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred, 537 * struct thread *a_td) 538 */ 539 /* ARGSUSED */ 540 static int 541 ntfs_close(struct vop_close_args *ap) 542 { 543 #if NTFS_DEBUG 544 struct vnode *vp = ap->a_vp; 545 struct ntnode *ip = VTONT(vp); 546 547 kprintf("ntfs_close: %d\n",ip->i_number); 548 #endif 549 550 return (vop_stdclose(ap)); 551 } 552 553 /* 554 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 555 * int *a_ncookies, u_int **cookies) 556 */ 557 int 558 ntfs_readdir(struct vop_readdir_args *ap) 559 { 560 struct vnode *vp = ap->a_vp; 561 struct fnode *fp = VTOF(vp); 562 struct ntnode *ip = FTONT(fp); 563 struct uio *uio = ap->a_uio; 564 struct ntfsmount *ntmp = ip->i_mp; 565 int i, error = 0; 566 u_int32_t faked = 0, num, off; 567 int ncookies = 0; 568 char convname[NTFS_MAXFILENAME + 1]; 569 570 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 571 572 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 573 return (EINVAL); 574 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0) 575 return (error); 576 577 /* 578 * uio->uio_offset carries the number of the entry 579 * where we should start returning dirents. 580 * 581 * We fake up "." if we're not reading the FS root 582 * and we always fake up "..". 583 * 584 * off contains the entry we are starting at, 585 * num increments while we are reading. 586 */ 587 588 off = num = uio->uio_offset; 589 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 590 591 /* Simulate . in every dir except ROOT */ 592 if (ip->i_number != NTFS_ROOTINO && num == 0) { 593 if (vop_write_dirent(&error, uio, ip->i_number, 594 DT_DIR, 1, ".")) 595 goto done; 596 if (error) 597 goto done; 598 599 num++; 600 ncookies++; 601 } 602 603 /* Simulate .. in every dir including ROOT */ 604 if (num == faked - 1) { 605 /* XXX NTFS_ROOTINO seems to be wrong here */ 606 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 607 DT_DIR, 2, "..")) 608 goto readdone; 609 if (error) 610 goto done; 611 612 num++; 613 ncookies++; 614 } 615 616 for (;;) { 617 struct attr_indexentry *iep; 618 619 /* 620 * num is the number of the entry we will return, 621 * but ntfs_ntreaddir takes the entry number of the 622 * ntfs directory listing, so subtract the faked 623 * . and .. entries. 624 */ 625 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 626 627 if (error) 628 goto done; 629 630 if( NULL == iep ) 631 break; 632 633 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 634 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 635 { 636 if(!ntfs_isnamepermitted(ntmp,iep)) 637 continue; 638 639 for (i=0; i < iep->ie_fnamelen; i++) 640 convname[i] = NTFS_U28(iep->ie_fname[i]); 641 convname[i] = '\0'; 642 643 if (vop_write_dirent(&error, uio, iep->ie_number, 644 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 645 iep->ie_fnamelen, convname)) 646 goto readdone; 647 648 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 649 "flag: %d, %s\n", 650 ncookies, convname, iep->ie_fnametype, 651 iep->ie_flag, 652 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 653 "dir" : "reg")); 654 655 if (error) 656 goto done; 657 658 ncookies++; 659 num++; 660 } 661 } 662 663 readdone: 664 uio->uio_offset = num; 665 666 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 667 ncookies,(u_int)(uio->uio_offset - off))); 668 dprintf(("ntfs_readdir: off: %d resid: %d\n", 669 (u_int32_t)uio->uio_offset,uio->uio_resid)); 670 671 if (!error && ap->a_ncookies != NULL) { 672 #if defined(__DragonFly__) 673 u_long *cookies; 674 u_long *cookiep; 675 #else /* defined(__NetBSD__) */ 676 off_t *cookies; 677 off_t *cookiep; 678 #endif 679 680 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 681 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 682 panic("ntfs_readdir: unexpected uio from NFS server"); 683 #if defined(__DragonFly__) 684 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 685 M_TEMP, M_WAITOK); 686 #else /* defined(__NetBSD__) */ 687 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 688 M_TEMP, M_WAITOK); 689 #endif 690 cookiep = cookies; 691 while (off < num) 692 *cookiep++ = ++off; 693 694 *ap->a_ncookies = ncookies; 695 *ap->a_cookies = cookies; 696 } 697 /* 698 if (ap->a_eofflag) 699 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset; 700 */ 701 done: 702 vn_unlock(vp); 703 return (error); 704 } 705 706 /* 707 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 708 * struct componentname *a_cnp) 709 */ 710 int 711 ntfs_lookup(struct vop_old_lookup_args *ap) 712 { 713 struct vnode *dvp = ap->a_dvp; 714 struct ntnode *dip = VTONT(dvp); 715 struct ntfsmount *ntmp = dip->i_mp; 716 struct componentname *cnp = ap->a_cnp; 717 int error; 718 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 719 #if NTFS_DEBUG 720 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 721 #endif 722 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 723 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 724 dip->i_number, lockparent, wantparent)); 725 726 *ap->a_vpp = NULL; 727 728 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 729 dprintf(("ntfs_lookup: faking . directory in %d\n", 730 dip->i_number)); 731 732 vref(dvp); 733 *ap->a_vpp = dvp; 734 error = 0; 735 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 736 struct ntvattr *vap; 737 738 dprintf(("ntfs_lookup: faking .. directory in %d\n", 739 dip->i_number)); 740 741 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 742 if(error) 743 return (error); 744 745 VOP__UNLOCK(dvp, 0); 746 cnp->cn_flags |= CNP_PDIRUNLOCK; 747 748 dprintf(("ntfs_lookup: parentdir: %d\n", 749 vap->va_a_name->n_pnumber)); 750 error = VFS_VGET(ntmp->ntm_mountp, 751 vap->va_a_name->n_pnumber,ap->a_vpp); 752 ntfs_ntvattrrele(vap); 753 if (error) { 754 if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 755 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 756 return (error); 757 } 758 759 if (lockparent) { 760 error = VN_LOCK(dvp, LK_EXCLUSIVE); 761 if (error) { 762 vput(*ap->a_vpp); 763 *ap->a_vpp = NULL; 764 return (error); 765 } 766 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 767 } 768 } else { 769 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 770 if (error) { 771 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 772 return (error); 773 } 774 775 dprintf(("ntfs_lookup: found ino: %d\n", 776 VTONT(*ap->a_vpp)->i_number)); 777 778 if (!lockparent) 779 VOP__UNLOCK(dvp, 0); 780 } 781 return (error); 782 } 783 784 #if defined(__DragonFly__) 785 /* 786 * Flush the blocks of a file to disk. 787 * 788 * This function is worthless for vnodes that represent directories. Maybe we 789 * could just do a sync if they try an fsync on a directory file. 790 * 791 * ntfs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor, 792 * struct thread *a_td) 793 */ 794 static int 795 ntfs_fsync(struct vop_fsync_args *ap) 796 { 797 return (0); 798 } 799 #endif 800 801 /* 802 * Return POSIX pathconf information applicable to NTFS filesystem 803 */ 804 int 805 ntfs_pathconf(struct vop_pathconf_args *ap) 806 { 807 switch (ap->a_name) { 808 case _PC_LINK_MAX: 809 *ap->a_retval = 1; 810 return (0); 811 case _PC_NAME_MAX: 812 *ap->a_retval = NTFS_MAXFILENAME; 813 return (0); 814 case _PC_PATH_MAX: 815 *ap->a_retval = PATH_MAX; 816 return (0); 817 case _PC_CHOWN_RESTRICTED: 818 *ap->a_retval = 1; 819 return (0); 820 case _PC_NO_TRUNC: 821 *ap->a_retval = 0; 822 return (0); 823 #if defined(__NetBSD__) 824 case _PC_SYNC_IO: 825 *ap->a_retval = 1; 826 return (0); 827 case _PC_FILESIZEBITS: 828 *ap->a_retval = 64; 829 return (0); 830 #endif 831 default: 832 return (EINVAL); 833 } 834 /* NOTREACHED */ 835 } 836 837 /* 838 * Global vfs data structures 839 */ 840 struct vop_ops ntfs_vnode_vops = { 841 .vop_default = vop_defaultop, 842 .vop_getattr = ntfs_getattr, 843 .vop_inactive = ntfs_inactive, 844 .vop_reclaim = ntfs_reclaim, 845 .vop_print = ntfs_print, 846 .vop_pathconf = ntfs_pathconf, 847 .vop_old_lookup = ntfs_lookup, 848 .vop_access = ntfs_access, 849 .vop_close = ntfs_close, 850 .vop_open = ntfs_open, 851 .vop_readdir = ntfs_readdir, 852 .vop_fsync = ntfs_fsync, 853 .vop_bmap = ntfs_bmap, 854 .vop_getpages = ntfs_getpages, 855 .vop_putpages = ntfs_putpages, 856 .vop_strategy = ntfs_strategy, 857 .vop_read = ntfs_read, 858 .vop_write = ntfs_write 859 }; 860 861