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 1.25 2006/02/17 19:18:07 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 vnode *a_vp, struct bio *a_bio) 323 */ 324 int 325 ntfs_strategy(struct vop_strategy_args *ap) 326 { 327 struct bio *bio = ap->a_bio; 328 struct buf *bp = bio->bio_buf; 329 struct vnode *vp = ap->a_vp; 330 struct fnode *fp = VTOF(vp); 331 struct ntnode *ip = FTONT(fp); 332 struct ntfsmount *ntmp = ip->i_mp; 333 int error; 334 335 #ifdef __DragonFly__ 336 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 337 (u_int32_t)bp->b_loffset,(u_int32_t)bio->bio_blkno, 338 (u_int32_t)bp->b_lblkno)); 339 #else 340 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 341 (u_int32_t)bio->bio_blkno, 342 (u_int32_t)bp->b_lblkno)); 343 #endif 344 345 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 346 (u_int32_t)bp->b_bcount,bp->b_flags)); 347 348 if (bp->b_flags & B_READ) { 349 u_int32_t toread; 350 351 if (ntfs_cntob(bio->bio_blkno) >= fp->f_size) { 352 clrbuf(bp); 353 error = 0; 354 } else { 355 toread = min(bp->b_bcount, 356 fp->f_size-ntfs_cntob(bio->bio_blkno)); 357 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 358 toread,(u_int32_t)fp->f_size)); 359 360 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 361 fp->f_attrname, ntfs_cntob(bio->bio_blkno), 362 toread, bp->b_data, NULL); 363 364 if (error) { 365 printf("ntfs_strategy: ntfs_readattr failed\n"); 366 bp->b_error = error; 367 bp->b_flags |= B_ERROR; 368 } 369 370 bzero(bp->b_data + toread, bp->b_bcount - toread); 371 } 372 } else { 373 size_t tmp; 374 u_int32_t towrite; 375 376 if (ntfs_cntob(bio->bio_blkno) + bp->b_bcount >= fp->f_size) { 377 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 378 bp->b_error = error = EFBIG; 379 bp->b_flags |= B_ERROR; 380 } else { 381 towrite = min(bp->b_bcount, 382 fp->f_size-ntfs_cntob(bio->bio_blkno)); 383 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 384 towrite,(u_int32_t)fp->f_size)); 385 386 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 387 fp->f_attrname, ntfs_cntob(bio->bio_blkno),towrite, 388 bp->b_data, &tmp, NULL); 389 390 if (error) { 391 printf("ntfs_strategy: ntfs_writeattr fail\n"); 392 bp->b_error = error; 393 bp->b_flags |= B_ERROR; 394 } 395 } 396 } 397 biodone(bio); 398 return (error); 399 } 400 401 /* 402 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 403 * struct ucred *a_cred) 404 */ 405 static int 406 ntfs_write(struct vop_write_args *ap) 407 { 408 struct vnode *vp = ap->a_vp; 409 struct fnode *fp = VTOF(vp); 410 struct ntnode *ip = FTONT(fp); 411 struct uio *uio = ap->a_uio; 412 struct ntfsmount *ntmp = ip->i_mp; 413 u_int64_t towrite; 414 size_t written; 415 int error; 416 417 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)); 418 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 419 420 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 421 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 422 return (EFBIG); 423 } 424 425 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 426 427 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 428 429 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 430 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 431 #ifdef NTFS_DEBUG 432 if (error) 433 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 434 #endif 435 436 return (error); 437 } 438 439 /* 440 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 441 * struct thread *a_td) 442 */ 443 int 444 ntfs_access(struct vop_access_args *ap) 445 { 446 struct vnode *vp = ap->a_vp; 447 struct ntnode *ip = VTONT(vp); 448 struct ucred *cred = ap->a_cred; 449 mode_t mask, mode = ap->a_mode; 450 gid_t *gp; 451 int i; 452 #ifdef QUOTA 453 int error; 454 #endif 455 456 dprintf(("ntfs_access: %d\n",ip->i_number)); 457 458 /* 459 * Disallow write attempts on read-only file systems; 460 * unless the file is a socket, fifo, or a block or 461 * character device resident on the file system. 462 */ 463 if (mode & VWRITE) { 464 switch ((int)vp->v_type) { 465 case VDIR: 466 case VLNK: 467 case VREG: 468 if (vp->v_mount->mnt_flag & MNT_RDONLY) 469 return (EROFS); 470 #ifdef QUOTA 471 if (error = getinoquota(ip)) 472 return (error); 473 #endif 474 break; 475 } 476 } 477 478 /* Otherwise, user id 0 always gets access. */ 479 if (cred->cr_uid == 0) 480 return (0); 481 482 mask = 0; 483 484 /* Otherwise, check the owner. */ 485 if (cred->cr_uid == ip->i_mp->ntm_uid) { 486 if (mode & VEXEC) 487 mask |= S_IXUSR; 488 if (mode & VREAD) 489 mask |= S_IRUSR; 490 if (mode & VWRITE) 491 mask |= S_IWUSR; 492 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 493 } 494 495 /* Otherwise, check the groups. */ 496 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 497 if (ip->i_mp->ntm_gid == *gp) { 498 if (mode & VEXEC) 499 mask |= S_IXGRP; 500 if (mode & VREAD) 501 mask |= S_IRGRP; 502 if (mode & VWRITE) 503 mask |= S_IWGRP; 504 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 505 } 506 507 /* Otherwise, check everyone else. */ 508 if (mode & VEXEC) 509 mask |= S_IXOTH; 510 if (mode & VREAD) 511 mask |= S_IROTH; 512 if (mode & VWRITE) 513 mask |= S_IWOTH; 514 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 515 } 516 517 /* 518 * Open called. 519 * 520 * Nothing to do. 521 * 522 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 523 * struct thread *a_td) 524 */ 525 /* ARGSUSED */ 526 static int 527 ntfs_open(struct vop_open_args *ap) 528 { 529 #if NTFS_DEBUG 530 struct vnode *vp = ap->a_vp; 531 struct ntnode *ip = VTONT(vp); 532 533 printf("ntfs_open: %d\n",ip->i_number); 534 #endif 535 536 /* 537 * Files marked append-only must be opened for appending. 538 */ 539 540 return (0); 541 } 542 543 /* 544 * Close called. 545 * 546 * Update the times on the inode. 547 * 548 * ntfs_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred, 549 * struct thread *a_td) 550 */ 551 /* ARGSUSED */ 552 static int 553 ntfs_close(struct vop_close_args *ap) 554 { 555 #if NTFS_DEBUG 556 struct vnode *vp = ap->a_vp; 557 struct ntnode *ip = VTONT(vp); 558 559 printf("ntfs_close: %d\n",ip->i_number); 560 #endif 561 562 return (0); 563 } 564 565 /* 566 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 567 * int *a_ncookies, u_int **cookies) 568 */ 569 int 570 ntfs_readdir(struct vop_readdir_args *ap) 571 { 572 struct vnode *vp = ap->a_vp; 573 struct fnode *fp = VTOF(vp); 574 struct ntnode *ip = FTONT(fp); 575 struct uio *uio = ap->a_uio; 576 struct ntfsmount *ntmp = ip->i_mp; 577 int i, error = 0; 578 u_int32_t faked = 0, num, off; 579 int ncookies = 0; 580 char convname[NTFS_MAXFILENAME + 1]; 581 582 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 583 584 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 585 return (EINVAL); 586 587 /* 588 * uio->uio_offset carries the number of the entry 589 * where we should start returning dirents. 590 * 591 * We fake up "." if we're not reading the FS root 592 * and we always fake up "..". 593 * 594 * off contains the entry we are starting at, 595 * num increments while we are reading. 596 */ 597 598 off = num = uio->uio_offset; 599 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 600 601 /* Simulate . in every dir except ROOT */ 602 if (ip->i_number != NTFS_ROOTINO && num == 0) { 603 if (vop_write_dirent(&error, uio, ip->i_number, 604 DT_DIR, 1, ".")) 605 return (0); 606 if (error) 607 return (error); 608 609 num++; 610 ncookies++; 611 } 612 613 /* Simulate .. in every dir including ROOT */ 614 if (num == faked - 1) { 615 /* XXX NTFS_ROOTINO seems to be wrong here */ 616 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 617 DT_DIR, 2, "..")) 618 goto readdone; 619 if(error) 620 return (error); 621 622 num++; 623 ncookies++; 624 } 625 626 for (;;) { 627 struct attr_indexentry *iep; 628 629 /* 630 * num is the number of the entry we will return, 631 * but ntfs_ntreaddir takes the entry number of the 632 * ntfs directory listing, so subtract the faked 633 * . and .. entries. 634 */ 635 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 636 637 if(error) 638 return (error); 639 640 if( NULL == iep ) 641 break; 642 643 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 644 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 645 { 646 if(!ntfs_isnamepermitted(ntmp,iep)) 647 continue; 648 649 for (i=0; i < iep->ie_fnamelen; i++) 650 convname[i] = NTFS_U28(iep->ie_fname[i]); 651 convname[i] = '\0'; 652 653 if (vop_write_dirent(&error, uio, iep->ie_number, 654 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 655 iep->ie_fnamelen, convname)) 656 goto readdone; 657 658 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 659 "flag: %d, %s\n", 660 ncookies, convname, iep->ie_fnametype, 661 iep->ie_flag, 662 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 663 "dir" : "reg")); 664 665 if(error) 666 return (error); 667 668 ncookies++; 669 num++; 670 } 671 } 672 673 readdone: 674 uio->uio_offset = num; 675 676 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 677 ncookies,(u_int)(uio->uio_offset - off))); 678 dprintf(("ntfs_readdir: off: %d resid: %d\n", 679 (u_int32_t)uio->uio_offset,uio->uio_resid)); 680 681 if (!error && ap->a_ncookies != NULL) { 682 #if defined(__DragonFly__) 683 u_long *cookies; 684 u_long *cookiep; 685 #else /* defined(__NetBSD__) */ 686 off_t *cookies; 687 off_t *cookiep; 688 #endif 689 690 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 691 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 692 panic("ntfs_readdir: unexpected uio from NFS server"); 693 #if defined(__DragonFly__) 694 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 695 M_TEMP, M_WAITOK); 696 #else /* defined(__NetBSD__) */ 697 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 698 M_TEMP, M_WAITOK); 699 #endif 700 cookiep = cookies; 701 while (off < num) 702 *cookiep++ = ++off; 703 704 *ap->a_ncookies = ncookies; 705 *ap->a_cookies = cookies; 706 } 707 /* 708 if (ap->a_eofflag) 709 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 710 */ 711 return (error); 712 } 713 714 /* 715 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 716 * struct componentname *a_cnp) 717 */ 718 int 719 ntfs_lookup(struct vop_old_lookup_args *ap) 720 { 721 struct vnode *dvp = ap->a_dvp; 722 struct ntnode *dip = VTONT(dvp); 723 struct ntfsmount *ntmp = dip->i_mp; 724 struct componentname *cnp = ap->a_cnp; 725 int error; 726 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 727 #if NTFS_DEBUG 728 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 729 #endif 730 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 731 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 732 dip->i_number, lockparent, wantparent)); 733 734 *ap->a_vpp = NULL; 735 736 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 737 dprintf(("ntfs_lookup: faking . directory in %d\n", 738 dip->i_number)); 739 740 vref(dvp); 741 *ap->a_vpp = dvp; 742 error = 0; 743 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 744 struct ntvattr *vap; 745 746 dprintf(("ntfs_lookup: faking .. directory in %d\n", 747 dip->i_number)); 748 749 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 750 if(error) 751 return (error); 752 753 VOP__UNLOCK(dvp,0,cnp->cn_td); 754 cnp->cn_flags |= CNP_PDIRUNLOCK; 755 756 dprintf(("ntfs_lookup: parentdir: %d\n", 757 vap->va_a_name->n_pnumber)); 758 error = VFS_VGET(ntmp->ntm_mountp, 759 vap->va_a_name->n_pnumber,ap->a_vpp); 760 ntfs_ntvattrrele(vap); 761 if (error) { 762 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_td)==0) 763 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 764 return (error); 765 } 766 767 if (lockparent) { 768 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_td); 769 if (error) { 770 vput(*ap->a_vpp); 771 *ap->a_vpp = NULL; 772 return (error); 773 } 774 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 775 } 776 } else { 777 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 778 if (error) { 779 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 780 return (error); 781 } 782 783 dprintf(("ntfs_lookup: found ino: %d\n", 784 VTONT(*ap->a_vpp)->i_number)); 785 786 if (!lockparent) 787 VOP__UNLOCK(dvp, 0, cnp->cn_td); 788 } 789 return (error); 790 } 791 792 #if defined(__DragonFly__) 793 /* 794 * Flush the blocks of a file to disk. 795 * 796 * This function is worthless for vnodes that represent directories. Maybe we 797 * could just do a sync if they try an fsync on a directory file. 798 * 799 * ntfs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor, 800 * struct thread *a_td) 801 */ 802 static int 803 ntfs_fsync(struct vop_fsync_args *ap) 804 { 805 return (0); 806 } 807 #endif 808 809 /* 810 * Return POSIX pathconf information applicable to NTFS filesystem 811 */ 812 int 813 ntfs_pathconf(void *v) 814 { 815 struct vop_pathconf_args /* { 816 struct vnode *a_vp; 817 int a_name; 818 register_t *a_retval; 819 } */ *ap = v; 820 821 switch (ap->a_name) { 822 case _PC_LINK_MAX: 823 *ap->a_retval = 1; 824 return (0); 825 case _PC_NAME_MAX: 826 *ap->a_retval = NTFS_MAXFILENAME; 827 return (0); 828 case _PC_PATH_MAX: 829 *ap->a_retval = PATH_MAX; 830 return (0); 831 case _PC_CHOWN_RESTRICTED: 832 *ap->a_retval = 1; 833 return (0); 834 case _PC_NO_TRUNC: 835 *ap->a_retval = 0; 836 return (0); 837 #if defined(__NetBSD__) 838 case _PC_SYNC_IO: 839 *ap->a_retval = 1; 840 return (0); 841 case _PC_FILESIZEBITS: 842 *ap->a_retval = 64; 843 return (0); 844 #endif 845 default: 846 return (EINVAL); 847 } 848 /* NOTREACHED */ 849 } 850 851 /* 852 * Global vfs data structures 853 */ 854 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 855 { &vop_default_desc, vop_defaultop }, 856 857 { &vop_getattr_desc, (vnodeopv_entry_t)ntfs_getattr }, 858 { &vop_inactive_desc, (vnodeopv_entry_t)ntfs_inactive }, 859 { &vop_reclaim_desc, (vnodeopv_entry_t)ntfs_reclaim }, 860 { &vop_print_desc, (vnodeopv_entry_t)ntfs_print }, 861 { &vop_pathconf_desc, (vnodeopv_entry_t)ntfs_pathconf }, 862 863 { &vop_islocked_desc, (vnodeopv_entry_t)vop_stdislocked }, 864 { &vop_unlock_desc, (vnodeopv_entry_t)vop_stdunlock }, 865 { &vop_lock_desc, (vnodeopv_entry_t)vop_stdlock }, 866 { &vop_old_lookup_desc, (vnodeopv_entry_t)ntfs_lookup }, 867 868 { &vop_access_desc, (vnodeopv_entry_t)ntfs_access }, 869 { &vop_close_desc, (vnodeopv_entry_t)ntfs_close }, 870 { &vop_open_desc, (vnodeopv_entry_t)ntfs_open }, 871 { &vop_readdir_desc, (vnodeopv_entry_t)ntfs_readdir }, 872 { &vop_fsync_desc, (vnodeopv_entry_t)ntfs_fsync }, 873 874 { &vop_bmap_desc, (vnodeopv_entry_t)ntfs_bmap }, 875 { &vop_getpages_desc, (vnodeopv_entry_t)ntfs_getpages }, 876 { &vop_putpages_desc, (vnodeopv_entry_t)ntfs_putpages }, 877 { &vop_strategy_desc, (vnodeopv_entry_t)ntfs_strategy }, 878 { &vop_bwrite_desc, (vnodeopv_entry_t)vop_stdbwrite }, 879 { &vop_read_desc, (vnodeopv_entry_t)ntfs_read }, 880 { &vop_write_desc, (vnodeopv_entry_t)ntfs_write }, 881 882 { NULL, NULL } 883 }; 884 885