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 1.24 2005/09/14 01:13:40 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 (void *); 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, daddr_t a_bn, struct vnode **a_vpp, 128 * daddr_t *a_bnp, 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_bnp != NULL) 137 *ap->a_bnp = ap->a_bn; 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, 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(struct vnodeop_desc *a_desc, ...) 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->vdesc_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_rdev = 0; /* XXX UNODEV ? */ 242 vap->va_size = fp->f_size; 243 vap->va_bytes = fp->f_allocated; 244 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 245 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 246 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 247 vap->va_flags = ip->i_flag; 248 vap->va_gen = 0; 249 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 250 vap->va_type = vp->v_type; 251 vap->va_filerev = 0; 252 return (0); 253 } 254 255 256 /* 257 * Last reference to an ntnode. If necessary, write or delete it. 258 * 259 * ntfs_inactive(struct vnode *a_vp) 260 */ 261 int 262 ntfs_inactive(struct vop_inactive_args *ap) 263 { 264 struct vnode *vp = ap->a_vp; 265 #ifdef NTFS_DEBUG 266 struct ntnode *ip = VTONT(vp); 267 #endif 268 269 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 270 271 if (ntfs_prtactive && vp->v_usecount != 0) 272 vprint("ntfs_inactive: pushing active", vp); 273 274 /* 275 * XXX since we don't support any filesystem changes 276 * right now, nothing more needs to be done 277 */ 278 return (0); 279 } 280 281 /* 282 * Reclaim an fnode/ntnode so that it can be used for other purposes. 283 * 284 * ntfs_reclaim(struct vnode *a_vp) 285 */ 286 int 287 ntfs_reclaim(struct vop_reclaim_args *ap) 288 { 289 struct vnode *vp = ap->a_vp; 290 struct fnode *fp = VTOF(vp); 291 struct ntnode *ip = FTONT(fp); 292 int error; 293 294 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 295 296 if (ntfs_prtactive && vp->v_usecount != 0) 297 vprint("ntfs_reclaim: pushing active", vp); 298 299 if ((error = ntfs_ntget(ip)) != 0) 300 return (error); 301 302 ntfs_frele(fp); 303 ntfs_ntput(ip); 304 vp->v_data = NULL; 305 306 return (0); 307 } 308 309 /* 310 * ntfs_print(struct vnode *a_vp) 311 */ 312 static int 313 ntfs_print(struct vop_print_args *ap) 314 { 315 return (0); 316 } 317 318 /* 319 * Calculate the logical to physical mapping if not done already, 320 * then call the device strategy routine. 321 * 322 * ntfs_strategy(struct buf *a_bp) 323 */ 324 int 325 ntfs_strategy(struct vop_strategy_args *ap) 326 { 327 struct buf *bp = ap->a_bp; 328 struct vnode *vp = bp->b_vp; 329 struct fnode *fp = VTOF(vp); 330 struct ntnode *ip = FTONT(fp); 331 struct ntfsmount *ntmp = ip->i_mp; 332 int error; 333 334 #ifdef __DragonFly__ 335 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 336 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 337 (u_int32_t)bp->b_lblkno)); 338 #else 339 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 340 (u_int32_t)bp->b_blkno, 341 (u_int32_t)bp->b_lblkno)); 342 #endif 343 344 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 345 (u_int32_t)bp->b_bcount,bp->b_flags)); 346 347 if (bp->b_flags & B_READ) { 348 u_int32_t toread; 349 350 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 351 clrbuf(bp); 352 error = 0; 353 } else { 354 toread = min(bp->b_bcount, 355 fp->f_size-ntfs_cntob(bp->b_blkno)); 356 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 357 toread,(u_int32_t)fp->f_size)); 358 359 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 360 fp->f_attrname, ntfs_cntob(bp->b_blkno), 361 toread, bp->b_data, NULL); 362 363 if (error) { 364 printf("ntfs_strategy: ntfs_readattr failed\n"); 365 bp->b_error = error; 366 bp->b_flags |= B_ERROR; 367 } 368 369 bzero(bp->b_data + toread, bp->b_bcount - toread); 370 } 371 } else { 372 size_t tmp; 373 u_int32_t towrite; 374 375 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 376 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 377 bp->b_error = error = EFBIG; 378 bp->b_flags |= B_ERROR; 379 } else { 380 towrite = min(bp->b_bcount, 381 fp->f_size-ntfs_cntob(bp->b_blkno)); 382 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 383 towrite,(u_int32_t)fp->f_size)); 384 385 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 386 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 387 bp->b_data, &tmp, NULL); 388 389 if (error) { 390 printf("ntfs_strategy: ntfs_writeattr fail\n"); 391 bp->b_error = error; 392 bp->b_flags |= B_ERROR; 393 } 394 } 395 } 396 biodone(bp); 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 printf("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 printf("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 #if NTFS_DEBUG 529 struct vnode *vp = ap->a_vp; 530 struct ntnode *ip = VTONT(vp); 531 532 printf("ntfs_open: %d\n",ip->i_number); 533 #endif 534 535 /* 536 * Files marked append-only must be opened for appending. 537 */ 538 539 return (0); 540 } 541 542 /* 543 * Close called. 544 * 545 * Update the times on the inode. 546 * 547 * ntfs_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred, 548 * struct thread *a_td) 549 */ 550 /* ARGSUSED */ 551 static int 552 ntfs_close(struct vop_close_args *ap) 553 { 554 #if NTFS_DEBUG 555 struct vnode *vp = ap->a_vp; 556 struct ntnode *ip = VTONT(vp); 557 558 printf("ntfs_close: %d\n",ip->i_number); 559 #endif 560 561 return (0); 562 } 563 564 /* 565 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 566 * int *a_ncookies, u_int **cookies) 567 */ 568 int 569 ntfs_readdir(struct vop_readdir_args *ap) 570 { 571 struct vnode *vp = ap->a_vp; 572 struct fnode *fp = VTOF(vp); 573 struct ntnode *ip = FTONT(fp); 574 struct uio *uio = ap->a_uio; 575 struct ntfsmount *ntmp = ip->i_mp; 576 int i, error = 0; 577 u_int32_t faked = 0, num, off; 578 int ncookies = 0; 579 char convname[NTFS_MAXFILENAME + 1]; 580 581 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 582 583 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 584 return (EINVAL); 585 586 /* 587 * uio->uio_offset carries the number of the entry 588 * where we should start returning dirents. 589 * 590 * We fake up "." if we're not reading the FS root 591 * and we always fake up "..". 592 * 593 * off contains the entry we are starting at, 594 * num increments while we are reading. 595 */ 596 597 off = num = uio->uio_offset; 598 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 599 600 /* Simulate . in every dir except ROOT */ 601 if (ip->i_number != NTFS_ROOTINO && num == 0) { 602 if (vop_write_dirent(&error, uio, ip->i_number, 603 DT_DIR, 1, ".")) 604 return (0); 605 if (error) 606 return (error); 607 608 num++; 609 ncookies++; 610 } 611 612 /* Simulate .. in every dir including ROOT */ 613 if (num == faked - 1) { 614 /* XXX NTFS_ROOTINO seems to be wrong here */ 615 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 616 DT_DIR, 2, "..")) 617 goto readdone; 618 if(error) 619 return (error); 620 621 num++; 622 ncookies++; 623 } 624 625 for (;;) { 626 struct attr_indexentry *iep; 627 628 /* 629 * num is the number of the entry we will return, 630 * but ntfs_ntreaddir takes the entry number of the 631 * ntfs directory listing, so subtract the faked 632 * . and .. entries. 633 */ 634 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 635 636 if(error) 637 return (error); 638 639 if( NULL == iep ) 640 break; 641 642 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 643 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 644 { 645 if(!ntfs_isnamepermitted(ntmp,iep)) 646 continue; 647 648 for (i=0; i < iep->ie_fnamelen; i++) 649 convname[i] = NTFS_U28(iep->ie_fname[i]); 650 convname[i] = '\0'; 651 652 if (vop_write_dirent(&error, uio, iep->ie_number, 653 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 654 iep->ie_fnamelen, convname)) 655 goto readdone; 656 657 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 658 "flag: %d, %s\n", 659 ncookies, convname, iep->ie_fnametype, 660 iep->ie_flag, 661 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 662 "dir" : "reg")); 663 664 if(error) 665 return (error); 666 667 ncookies++; 668 num++; 669 } 670 } 671 672 readdone: 673 uio->uio_offset = num; 674 675 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 676 ncookies,(u_int)(uio->uio_offset - off))); 677 dprintf(("ntfs_readdir: off: %d resid: %d\n", 678 (u_int32_t)uio->uio_offset,uio->uio_resid)); 679 680 if (!error && ap->a_ncookies != NULL) { 681 #if defined(__DragonFly__) 682 u_long *cookies; 683 u_long *cookiep; 684 #else /* defined(__NetBSD__) */ 685 off_t *cookies; 686 off_t *cookiep; 687 #endif 688 689 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 690 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 691 panic("ntfs_readdir: unexpected uio from NFS server"); 692 #if defined(__DragonFly__) 693 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 694 M_TEMP, M_WAITOK); 695 #else /* defined(__NetBSD__) */ 696 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 697 M_TEMP, M_WAITOK); 698 #endif 699 cookiep = cookies; 700 while (off < num) 701 *cookiep++ = ++off; 702 703 *ap->a_ncookies = ncookies; 704 *ap->a_cookies = cookies; 705 } 706 /* 707 if (ap->a_eofflag) 708 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 709 */ 710 return (error); 711 } 712 713 /* 714 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 715 * struct componentname *a_cnp) 716 */ 717 int 718 ntfs_lookup(struct vop_old_lookup_args *ap) 719 { 720 struct vnode *dvp = ap->a_dvp; 721 struct ntnode *dip = VTONT(dvp); 722 struct ntfsmount *ntmp = dip->i_mp; 723 struct componentname *cnp = ap->a_cnp; 724 int error; 725 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 726 #if NTFS_DEBUG 727 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 728 #endif 729 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 730 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 731 dip->i_number, lockparent, wantparent)); 732 733 *ap->a_vpp = NULL; 734 735 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 736 dprintf(("ntfs_lookup: faking . directory in %d\n", 737 dip->i_number)); 738 739 vref(dvp); 740 *ap->a_vpp = dvp; 741 error = 0; 742 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 743 struct ntvattr *vap; 744 745 dprintf(("ntfs_lookup: faking .. directory in %d\n", 746 dip->i_number)); 747 748 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 749 if(error) 750 return (error); 751 752 VOP__UNLOCK(dvp,0,cnp->cn_td); 753 cnp->cn_flags |= CNP_PDIRUNLOCK; 754 755 dprintf(("ntfs_lookup: parentdir: %d\n", 756 vap->va_a_name->n_pnumber)); 757 error = VFS_VGET(ntmp->ntm_mountp, 758 vap->va_a_name->n_pnumber,ap->a_vpp); 759 ntfs_ntvattrrele(vap); 760 if (error) { 761 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_td)==0) 762 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 763 return (error); 764 } 765 766 if (lockparent) { 767 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_td); 768 if (error) { 769 vput(*ap->a_vpp); 770 *ap->a_vpp = NULL; 771 return (error); 772 } 773 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 774 } 775 } else { 776 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 777 if (error) { 778 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 779 return (error); 780 } 781 782 dprintf(("ntfs_lookup: found ino: %d\n", 783 VTONT(*ap->a_vpp)->i_number)); 784 785 if (!lockparent) 786 VOP__UNLOCK(dvp, 0, cnp->cn_td); 787 } 788 return (error); 789 } 790 791 #if defined(__DragonFly__) 792 /* 793 * Flush the blocks of a file to disk. 794 * 795 * This function is worthless for vnodes that represent directories. Maybe we 796 * could just do a sync if they try an fsync on a directory file. 797 * 798 * ntfs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor, 799 * struct thread *a_td) 800 */ 801 static int 802 ntfs_fsync(struct vop_fsync_args *ap) 803 { 804 return (0); 805 } 806 #endif 807 808 /* 809 * Return POSIX pathconf information applicable to NTFS filesystem 810 */ 811 int 812 ntfs_pathconf(void *v) 813 { 814 struct vop_pathconf_args /* { 815 struct vnode *a_vp; 816 int a_name; 817 register_t *a_retval; 818 } */ *ap = v; 819 820 switch (ap->a_name) { 821 case _PC_LINK_MAX: 822 *ap->a_retval = 1; 823 return (0); 824 case _PC_NAME_MAX: 825 *ap->a_retval = NTFS_MAXFILENAME; 826 return (0); 827 case _PC_PATH_MAX: 828 *ap->a_retval = PATH_MAX; 829 return (0); 830 case _PC_CHOWN_RESTRICTED: 831 *ap->a_retval = 1; 832 return (0); 833 case _PC_NO_TRUNC: 834 *ap->a_retval = 0; 835 return (0); 836 #if defined(__NetBSD__) 837 case _PC_SYNC_IO: 838 *ap->a_retval = 1; 839 return (0); 840 case _PC_FILESIZEBITS: 841 *ap->a_retval = 64; 842 return (0); 843 #endif 844 default: 845 return (EINVAL); 846 } 847 /* NOTREACHED */ 848 } 849 850 /* 851 * Global vfs data structures 852 */ 853 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 854 { &vop_default_desc, vop_defaultop }, 855 856 { &vop_getattr_desc, (vnodeopv_entry_t)ntfs_getattr }, 857 { &vop_inactive_desc, (vnodeopv_entry_t)ntfs_inactive }, 858 { &vop_reclaim_desc, (vnodeopv_entry_t)ntfs_reclaim }, 859 { &vop_print_desc, (vnodeopv_entry_t)ntfs_print }, 860 { &vop_pathconf_desc, (vnodeopv_entry_t)ntfs_pathconf }, 861 862 { &vop_islocked_desc, (vnodeopv_entry_t)vop_stdislocked }, 863 { &vop_unlock_desc, (vnodeopv_entry_t)vop_stdunlock }, 864 { &vop_lock_desc, (vnodeopv_entry_t)vop_stdlock }, 865 { &vop_old_lookup_desc, (vnodeopv_entry_t)ntfs_lookup }, 866 867 { &vop_access_desc, (vnodeopv_entry_t)ntfs_access }, 868 { &vop_close_desc, (vnodeopv_entry_t)ntfs_close }, 869 { &vop_open_desc, (vnodeopv_entry_t)ntfs_open }, 870 { &vop_readdir_desc, (vnodeopv_entry_t)ntfs_readdir }, 871 { &vop_fsync_desc, (vnodeopv_entry_t)ntfs_fsync }, 872 873 { &vop_bmap_desc, (vnodeopv_entry_t)ntfs_bmap }, 874 { &vop_getpages_desc, (vnodeopv_entry_t)ntfs_getpages }, 875 { &vop_putpages_desc, (vnodeopv_entry_t)ntfs_putpages }, 876 { &vop_strategy_desc, (vnodeopv_entry_t)ntfs_strategy }, 877 { &vop_bwrite_desc, (vnodeopv_entry_t)vop_stdbwrite }, 878 { &vop_read_desc, (vnodeopv_entry_t)ntfs_read }, 879 { &vop_write_desc, (vnodeopv_entry_t)ntfs_write }, 880 881 { NULL, NULL } 882 }; 883 884