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 #include <sys/buf2.h> 74 75 /*#define NTFS_DEBUG 1*/ 76 #include "ntfs.h" 77 #include "ntfs_inode.h" 78 #include "ntfs_subr.h" 79 #if defined(__NetBSD__) 80 #include <miscfs/specfs/specdev.h> 81 #include <miscfs/genfs/genfs.h> 82 #endif 83 84 #include <sys/unistd.h> /* for pathconf(2) constants */ 85 86 static int ntfs_read (struct vop_read_args *); 87 static int ntfs_write (struct vop_write_args *ap); 88 static int ntfs_getattr (struct vop_getattr_args *ap); 89 static int ntfs_inactive (struct vop_inactive_args *ap); 90 static int ntfs_print (struct vop_print_args *ap); 91 static int ntfs_reclaim (struct vop_reclaim_args *ap); 92 static int ntfs_strategy (struct vop_strategy_args *ap); 93 static int ntfs_access (struct vop_access_args *ap); 94 static int ntfs_open (struct vop_open_args *ap); 95 static int ntfs_close (struct vop_close_args *ap); 96 static int ntfs_readdir (struct vop_readdir_args *ap); 97 static int ntfs_lookup (struct vop_old_lookup_args *ap); 98 static int ntfs_bmap (struct vop_bmap_args *ap); 99 #if defined(__DragonFly__) 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 /* 109 * This is a noop, simply returning what one has been given. 110 * 111 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, 112 * daddr_t *a_doffsetp, int *a_runp, int *a_runb) 113 */ 114 int 115 ntfs_bmap(struct vop_bmap_args *ap) 116 { 117 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 118 if (ap->a_doffsetp != NULL) 119 *ap->a_doffsetp = ap->a_loffset; 120 if (ap->a_runp != NULL) 121 *ap->a_runp = 0; 122 #if !defined(__NetBSD__) 123 if (ap->a_runb != NULL) 124 *ap->a_runb = 0; 125 #endif 126 return (0); 127 } 128 129 /* 130 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 131 * struct ucred *a_cred) 132 */ 133 static int 134 ntfs_read(struct vop_read_args *ap) 135 { 136 struct vnode *vp = ap->a_vp; 137 struct fnode *fp = VTOF(vp); 138 struct ntnode *ip = FTONT(fp); 139 struct uio *uio = ap->a_uio; 140 struct ntfsmount *ntmp = ip->i_mp; 141 struct buf *bp; 142 daddr_t cn; 143 int resid, off, toread; 144 int error; 145 146 dprintf(("ntfs_read: ino: %d, off: %d resid: %ld, segflg: %d\n", 147 ip->i_number, (u_int32_t)uio->uio_offset, 148 uio->uio_resid, uio->uio_segflg)); 149 150 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 151 152 /* don't allow reading after end of file */ 153 if (uio->uio_offset > fp->f_size) 154 return (0); 155 156 resid = (int)szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 157 158 dprintf((", resid: %d\n", resid)); 159 160 error = 0; 161 while (resid) { 162 cn = ntfs_btocn(uio->uio_offset); 163 off = ntfs_btocnoff(uio->uio_offset); 164 165 toread = min(off + resid, ntfs_cntob(1)); 166 167 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); 168 if (error) { 169 brelse(bp); 170 break; 171 } 172 173 error = uiomove(bp->b_data + off, toread - off, uio); 174 if(error) { 175 brelse(bp); 176 break; 177 } 178 brelse(bp); 179 180 resid -= toread - off; 181 } 182 183 return (error); 184 } 185 186 #if !defined(__DragonFly__) 187 188 /* 189 * ntfs_bypass() 190 */ 191 static int 192 ntfs_bypass(struct vop_generic_args *ap) 193 { 194 int error = ENOTTY; 195 dprintf(("ntfs_bypass: %s\n", ap->a_desc->sd_name)); 196 return (error); 197 } 198 199 #endif 200 201 /* 202 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 203 */ 204 static int 205 ntfs_getattr(struct vop_getattr_args *ap) 206 { 207 struct vnode *vp = ap->a_vp; 208 struct fnode *fp = VTOF(vp); 209 struct ntnode *ip = FTONT(fp); 210 struct vattr *vap = ap->a_vap; 211 212 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 213 214 #if defined(__DragonFly__) 215 vap->va_fsid = dev2udev(ip->i_dev); 216 #else /* NetBSD */ 217 vap->va_fsid = ip->i_dev; 218 #endif 219 vap->va_fileid = ip->i_number; 220 vap->va_mode = ip->i_mp->ntm_mode; 221 vap->va_nlink = ip->i_nlink; 222 vap->va_uid = ip->i_mp->ntm_uid; 223 vap->va_gid = ip->i_mp->ntm_gid; 224 vap->va_rmajor = VNOVAL; 225 vap->va_rminor = VNOVAL; 226 vap->va_size = fp->f_size; 227 vap->va_bytes = fp->f_allocated; 228 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 229 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 230 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 231 vap->va_flags = ip->i_flag; 232 vap->va_gen = 0; 233 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 234 vap->va_type = vp->v_type; 235 vap->va_filerev = 0; 236 return (0); 237 } 238 239 240 /* 241 * Last reference to an ntnode. If necessary, write or delete it. 242 * 243 * ntfs_inactive(struct vnode *a_vp) 244 */ 245 int 246 ntfs_inactive(struct vop_inactive_args *ap) 247 { 248 struct vnode *vp = ap->a_vp; 249 #ifdef NTFS_DEBUG 250 struct ntnode *ip = VTONT(vp); 251 #endif 252 253 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 254 255 if (ntfs_prtactive && vp->v_sysref.refcnt > 1) 256 vprint("ntfs_inactive: pushing active", vp); 257 258 /* 259 * XXX since we don't support any filesystem changes 260 * right now, nothing more needs to be done 261 */ 262 return (0); 263 } 264 265 /* 266 * Reclaim an fnode/ntnode so that it can be used for other purposes. 267 * 268 * ntfs_reclaim(struct vnode *a_vp) 269 */ 270 int 271 ntfs_reclaim(struct vop_reclaim_args *ap) 272 { 273 struct vnode *vp = ap->a_vp; 274 struct fnode *fp = VTOF(vp); 275 struct ntnode *ip = FTONT(fp); 276 int error; 277 278 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 279 280 if (ntfs_prtactive && vp->v_sysref.refcnt > 1) 281 vprint("ntfs_reclaim: pushing active", vp); 282 283 if ((error = ntfs_ntget(ip)) != 0) 284 return (error); 285 286 ntfs_frele(fp); 287 ntfs_ntput(ip); 288 vp->v_data = NULL; 289 290 return (0); 291 } 292 293 /* 294 * ntfs_print(struct vnode *a_vp) 295 */ 296 static int 297 ntfs_print(struct vop_print_args *ap) 298 { 299 return (0); 300 } 301 302 /* 303 * Calculate the logical to physical mapping if not done already, 304 * then call the device strategy routine. 305 * 306 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio) 307 */ 308 int 309 ntfs_strategy(struct vop_strategy_args *ap) 310 { 311 struct bio *bio = ap->a_bio; 312 struct buf *bp = bio->bio_buf; 313 struct vnode *vp = ap->a_vp; 314 struct fnode *fp = VTOF(vp); 315 struct ntnode *ip = FTONT(fp); 316 struct ntfsmount *ntmp = ip->i_mp; 317 u_int32_t toread; 318 u_int32_t towrite; 319 size_t tmp; 320 int error; 321 322 dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n", 323 bp->b_loffset, bio->bio_offset)); 324 325 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 326 (u_int32_t)bp->b_bcount,bp->b_flags)); 327 328 bp->b_error = 0; 329 330 switch(bp->b_cmd) { 331 case BUF_CMD_READ: 332 if (bio->bio_offset >= fp->f_size) { 333 clrbuf(bp); 334 error = 0; 335 } else { 336 toread = min(bp->b_bcount, 337 fp->f_size - bio->bio_offset); 338 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 339 toread,(u_int32_t)fp->f_size)); 340 341 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 342 fp->f_attrname, bio->bio_offset, 343 toread, bp->b_data, NULL); 344 345 if (error) { 346 kprintf("ntfs_strategy: ntfs_readattr failed\n"); 347 bp->b_error = error; 348 bp->b_flags |= B_ERROR; 349 } 350 351 bzero(bp->b_data + toread, bp->b_bcount - toread); 352 } 353 break; 354 case BUF_CMD_WRITE: 355 if (bio->bio_offset + bp->b_bcount >= fp->f_size) { 356 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n"); 357 bp->b_error = error = EFBIG; 358 bp->b_flags |= B_ERROR; 359 } else { 360 towrite = min(bp->b_bcount, 361 fp->f_size - bio->bio_offset); 362 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 363 towrite,(u_int32_t)fp->f_size)); 364 365 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 366 fp->f_attrname, bio->bio_offset,towrite, 367 bp->b_data, &tmp, NULL); 368 369 if (error) { 370 kprintf("ntfs_strategy: ntfs_writeattr fail\n"); 371 bp->b_error = error; 372 bp->b_flags |= B_ERROR; 373 } 374 } 375 break; 376 default: 377 panic("ntfs: bad b_cmd %d\n", bp->b_cmd); 378 } 379 biodone(bio); 380 return (error); 381 } 382 383 /* 384 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 385 * struct ucred *a_cred) 386 */ 387 static int 388 ntfs_write(struct vop_write_args *ap) 389 { 390 struct vnode *vp = ap->a_vp; 391 struct fnode *fp = VTOF(vp); 392 struct ntnode *ip = FTONT(fp); 393 struct uio *uio = ap->a_uio; 394 struct ntfsmount *ntmp = ip->i_mp; 395 size_t towrite; 396 size_t written; 397 int error; 398 399 dprintf(("ntfs_write: ino: %d, off: %d resid: %ld, segflg: %d\n", 400 ip->i_number, (u_int32_t)uio->uio_offset, 401 uio->uio_resid, uio->uio_segflg)); 402 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 403 404 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 405 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 406 return (EFBIG); 407 } 408 if (uio->uio_offset > fp->f_size) 409 return (EFBIG); 410 411 towrite = szmin(uio->uio_resid, fp->f_size - uio->uio_offset); 412 413 dprintf((", towrite: %ld\n", towrite)); 414 415 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 416 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 417 #ifdef NTFS_DEBUG 418 if (error) 419 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error); 420 #endif 421 422 return (error); 423 } 424 425 /* 426 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 427 */ 428 int 429 ntfs_access(struct vop_access_args *ap) 430 { 431 struct vnode *vp = ap->a_vp; 432 struct ntnode *ip = VTONT(vp); 433 struct ucred *cred = ap->a_cred; 434 mode_t mask, mode = ap->a_mode; 435 gid_t *gp; 436 int i; 437 #ifdef QUOTA 438 int error; 439 #endif 440 441 dprintf(("ntfs_access: %d\n",ip->i_number)); 442 443 /* 444 * Disallow write attempts on read-only file systems; 445 * unless the file is a socket, fifo, or a block or 446 * character device resident on the file system. 447 */ 448 if (mode & VWRITE) { 449 switch ((int)vp->v_type) { 450 case VDIR: 451 case VLNK: 452 case VREG: 453 if (vp->v_mount->mnt_flag & MNT_RDONLY) 454 return (EROFS); 455 #ifdef QUOTA 456 if (error = getinoquota(ip)) 457 return (error); 458 #endif 459 break; 460 } 461 } 462 463 /* Otherwise, user id 0 always gets access. */ 464 if (cred->cr_uid == 0) 465 return (0); 466 467 mask = 0; 468 469 /* Otherwise, check the owner. */ 470 if (cred->cr_uid == ip->i_mp->ntm_uid) { 471 if (mode & VEXEC) 472 mask |= S_IXUSR; 473 if (mode & VREAD) 474 mask |= S_IRUSR; 475 if (mode & VWRITE) 476 mask |= S_IWUSR; 477 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 478 } 479 480 /* Otherwise, check the groups. */ 481 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 482 if (ip->i_mp->ntm_gid == *gp) { 483 if (mode & VEXEC) 484 mask |= S_IXGRP; 485 if (mode & VREAD) 486 mask |= S_IRGRP; 487 if (mode & VWRITE) 488 mask |= S_IWGRP; 489 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 490 } 491 492 /* Otherwise, check everyone else. */ 493 if (mode & VEXEC) 494 mask |= S_IXOTH; 495 if (mode & VREAD) 496 mask |= S_IROTH; 497 if (mode & VWRITE) 498 mask |= S_IWOTH; 499 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 500 } 501 502 /* 503 * Open called. 504 * 505 * Nothing to do. 506 * 507 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 508 * struct file *a_fp) 509 */ 510 /* ARGSUSED */ 511 static int 512 ntfs_open(struct vop_open_args *ap) 513 { 514 return (vop_stdopen(ap)); 515 } 516 517 /* 518 * Close called. 519 * 520 * Update the times on the inode. 521 * 522 * ntfs_close(struct vnode *a_vp, int a_fflag) 523 */ 524 /* ARGSUSED */ 525 static int 526 ntfs_close(struct vop_close_args *ap) 527 { 528 #if NTFS_DEBUG 529 struct vnode *vp = ap->a_vp; 530 struct ntnode *ip = VTONT(vp); 531 532 kprintf("ntfs_close: %d\n",ip->i_number); 533 #endif 534 535 return (vop_stdclose(ap)); 536 } 537 538 /* 539 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 540 * int *a_ncookies, off_t **cookies) 541 */ 542 int 543 ntfs_readdir(struct vop_readdir_args *ap) 544 { 545 struct vnode *vp = ap->a_vp; 546 struct fnode *fp = VTOF(vp); 547 struct ntnode *ip = FTONT(fp); 548 struct uio *uio = ap->a_uio; 549 struct ntfsmount *ntmp = ip->i_mp; 550 int i, j, error = 0; 551 wchar c; 552 u_int32_t faked = 0, num, off; 553 int ncookies = 0; 554 char convname[NTFS_MAXFILENAME + 1]; 555 556 dprintf(("ntfs_readdir %d off: %d resid: %ld\n", 557 ip->i_number, (u_int32_t)uio->uio_offset, 558 uio->uio_resid)); 559 560 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 561 return (EINVAL); 562 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0) 563 return (error); 564 565 /* 566 * uio->uio_offset carries the number of the entry 567 * where we should start returning dirents. 568 * 569 * We fake up "." if we're not reading the FS root 570 * and we always fake up "..". 571 * 572 * off contains the entry we are starting at, 573 * num increments while we are reading. 574 */ 575 576 off = num = uio->uio_offset; 577 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 578 579 /* Simulate . in every dir except ROOT */ 580 if (ip->i_number != NTFS_ROOTINO && num == 0) { 581 if (vop_write_dirent(&error, uio, ip->i_number, 582 DT_DIR, 1, ".")) 583 goto done; 584 if (error) 585 goto done; 586 587 num++; 588 ncookies++; 589 } 590 591 /* Simulate .. in every dir including ROOT */ 592 if (num == faked - 1) { 593 /* XXX NTFS_ROOTINO seems to be wrong here */ 594 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 595 DT_DIR, 2, "..")) 596 goto readdone; 597 if (error) 598 goto done; 599 600 num++; 601 ncookies++; 602 } 603 604 for (;;) { 605 struct attr_indexentry *iep; 606 607 /* 608 * num is the number of the entry we will return, 609 * but ntfs_ntreaddir takes the entry number of the 610 * ntfs directory listing, so subtract the faked 611 * . and .. entries. 612 */ 613 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 614 615 if (error) 616 goto done; 617 618 if( NULL == iep ) 619 break; 620 621 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 622 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 623 { 624 if(!ntfs_isnamepermitted(ntmp,iep)) 625 continue; 626 for(i=0, j=0; i < iep->ie_fnamelen; i++, j++) { 627 c = NTFS_U28(iep->ie_fname[i]); 628 if (c&0xFF00) 629 convname[j++] = (char)(c>>8); 630 convname[j] = (char)c&0xFF; 631 } 632 convname[j] = '\0'; 633 if (vop_write_dirent(&error, uio, iep->ie_number, 634 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 635 j, convname)) 636 goto readdone; 637 638 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 639 "flag: %d, %s\n", 640 ncookies, convname, iep->ie_fnametype, 641 iep->ie_flag, 642 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 643 "dir" : "reg")); 644 645 if (error) 646 goto done; 647 648 ncookies++; 649 num++; 650 } 651 } 652 653 readdone: 654 uio->uio_offset = num; 655 656 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 657 ncookies,(u_int)(uio->uio_offset - off))); 658 dprintf(("ntfs_readdir: off: %d resid: %ld\n", 659 (u_int32_t)uio->uio_offset, uio->uio_resid)); 660 661 if (!error && ap->a_ncookies != NULL) { 662 off_t *cookies; 663 off_t *cookiep; 664 665 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 666 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 667 panic("ntfs_readdir: unexpected uio from NFS server"); 668 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 669 M_TEMP, M_WAITOK); 670 cookiep = cookies; 671 while (off < num) 672 *cookiep++ = ++off; 673 674 *ap->a_ncookies = ncookies; 675 *ap->a_cookies = cookies; 676 } 677 /* 678 if (ap->a_eofflag) 679 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset; 680 */ 681 done: 682 vn_unlock(vp); 683 return (error); 684 } 685 686 /* 687 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 688 * struct componentname *a_cnp) 689 */ 690 int 691 ntfs_lookup(struct vop_old_lookup_args *ap) 692 { 693 struct vnode *dvp = ap->a_dvp; 694 struct ntnode *dip = VTONT(dvp); 695 struct ntfsmount *ntmp = dip->i_mp; 696 struct componentname *cnp = ap->a_cnp; 697 int error; 698 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 699 #if NTFS_DEBUG 700 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 701 #endif 702 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 703 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 704 dip->i_number, lockparent, wantparent)); 705 706 *ap->a_vpp = NULL; 707 708 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 709 dprintf(("ntfs_lookup: faking . directory in %d\n", 710 dip->i_number)); 711 712 vref(dvp); 713 *ap->a_vpp = dvp; 714 error = 0; 715 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 716 struct ntvattr *vap; 717 718 dprintf(("ntfs_lookup: faking .. directory in %d\n", 719 dip->i_number)); 720 721 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 722 if(error) 723 return (error); 724 725 VOP__UNLOCK(dvp, 0); 726 cnp->cn_flags |= CNP_PDIRUNLOCK; 727 728 dprintf(("ntfs_lookup: parentdir: %d\n", 729 vap->va_a_name->n_pnumber)); 730 error = VFS_VGET(ntmp->ntm_mountp, NULL, 731 vap->va_a_name->n_pnumber,ap->a_vpp); 732 ntfs_ntvattrrele(vap); 733 if (error) { 734 if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 735 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 736 return (error); 737 } 738 739 if (lockparent) { 740 error = VN_LOCK(dvp, LK_EXCLUSIVE); 741 if (error) { 742 vput(*ap->a_vpp); 743 *ap->a_vpp = NULL; 744 return (error); 745 } 746 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 747 } 748 } else { 749 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 750 if (error) { 751 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 752 return (error); 753 } 754 755 dprintf(("ntfs_lookup: found ino: %d\n", 756 VTONT(*ap->a_vpp)->i_number)); 757 758 if (!lockparent) 759 VOP__UNLOCK(dvp, 0); 760 } 761 return (error); 762 } 763 764 #if defined(__DragonFly__) 765 /* 766 * Flush the blocks of a file to disk. 767 * 768 * This function is worthless for vnodes that represent directories. Maybe we 769 * could just do a sync if they try an fsync on a directory file. 770 * 771 * ntfs_fsync(struct vnode *a_vp, int a_waitfor) 772 */ 773 static int 774 ntfs_fsync(struct vop_fsync_args *ap) 775 { 776 return (0); 777 } 778 #endif 779 780 /* 781 * Return POSIX pathconf information applicable to NTFS filesystem 782 */ 783 int 784 ntfs_pathconf(struct vop_pathconf_args *ap) 785 { 786 switch (ap->a_name) { 787 case _PC_LINK_MAX: 788 *ap->a_retval = 1; 789 return (0); 790 case _PC_NAME_MAX: 791 *ap->a_retval = NTFS_MAXFILENAME; 792 return (0); 793 case _PC_PATH_MAX: 794 *ap->a_retval = PATH_MAX; 795 return (0); 796 case _PC_CHOWN_RESTRICTED: 797 *ap->a_retval = 1; 798 return (0); 799 case _PC_NO_TRUNC: 800 *ap->a_retval = 0; 801 return (0); 802 #if defined(__NetBSD__) 803 case _PC_SYNC_IO: 804 *ap->a_retval = 1; 805 return (0); 806 case _PC_FILESIZEBITS: 807 *ap->a_retval = 64; 808 return (0); 809 #endif 810 default: 811 return (EINVAL); 812 } 813 /* NOTREACHED */ 814 } 815 816 /* 817 * Global vfs data structures 818 */ 819 struct vop_ops ntfs_vnode_vops = { 820 .vop_default = vop_defaultop, 821 .vop_getattr = ntfs_getattr, 822 .vop_inactive = ntfs_inactive, 823 .vop_reclaim = ntfs_reclaim, 824 .vop_print = ntfs_print, 825 .vop_pathconf = ntfs_pathconf, 826 .vop_old_lookup = ntfs_lookup, 827 .vop_access = ntfs_access, 828 .vop_close = ntfs_close, 829 .vop_open = ntfs_open, 830 .vop_readdir = ntfs_readdir, 831 .vop_fsync = ntfs_fsync, 832 .vop_bmap = ntfs_bmap, 833 .vop_getpages = vop_stdgetpages, 834 .vop_putpages = vop_stdputpages, 835 .vop_strategy = ntfs_strategy, 836 .vop_read = ntfs_read, 837 .vop_write = ntfs_write 838 }; 839 840