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sys/ntfs/ntfs_vnops.c
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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 * $FreeBSD$ 39 * 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/time.h> 46 #include <sys/types.h> 47 #include <sys/stat.h> 48 #include <sys/vnode.h> 49 #include <sys/mount.h> 50 #include <sys/namei.h> 51 #include <sys/malloc.h> 52 #include <sys/buf.h> 53 #include <sys/dirent.h> 54 55 #include <vm/vm.h> 56 #include <vm/vm_param.h> 57 #if defined(__NetBSD__) 58 #include <vm/vm_prot.h> 59 #endif 60 #include <vm/vm_page.h> 61 #include <vm/vm_object.h> 62 #include <vm/vm_pager.h> 63 #if defined(__FreeBSD__) 64 #include <vm/vnode_pager.h> 65 #endif 66 #include <vm/vm_extern.h> 67 68 #include <sys/sysctl.h> 69 70 /*#define NTFS_DEBUG 1*/ 71 #include <ntfs/ntfs.h> 72 #include <ntfs/ntfs_inode.h> 73 #include <ntfs/ntfs_subr.h> 74 #if defined(__NetBSD__) 75 #include <miscfs/specfs/specdev.h> 76 #include <miscfs/genfs/genfs.h> 77 #endif 78 79 #include <sys/unistd.h> /* for pathconf(2) constants */ 80 81 static int ntfs_read __P((struct vop_read_args *)); 82 static int ntfs_write __P((struct vop_write_args *ap)); 83 static int ntfs_getattr __P((struct vop_getattr_args *ap)); 84 static int ntfs_inactive __P((struct vop_inactive_args *ap)); 85 static int ntfs_print __P((struct vop_print_args *ap)); 86 static int ntfs_reclaim __P((struct vop_reclaim_args *ap)); 87 static int ntfs_strategy __P((struct vop_strategy_args *ap)); 88 static int ntfs_access __P((struct vop_access_args *ap)); 89 static int ntfs_open __P((struct vop_open_args *ap)); 90 static int ntfs_close __P((struct vop_close_args *ap)); 91 static int ntfs_readdir __P((struct vop_readdir_args *ap)); 92 static int ntfs_lookup __P((struct vop_lookup_args *ap)); 93 static int ntfs_bmap __P((struct vop_bmap_args *ap)); 94 #if defined(__FreeBSD__) 95 static int ntfs_getpages __P((struct vop_getpages_args *ap)); 96 static int ntfs_putpages __P((struct vop_putpages_args *)); 97 static int ntfs_fsync __P((struct vop_fsync_args *ap)); 98 #else 99 static int ntfs_bypass __P((struct vop_generic_args *ap)); 100 #endif 101 static int ntfs_pathconf __P((void *)); 102 103 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 104 105 #if defined(__FreeBSD__) 106 int 107 ntfs_getpages(ap) 108 struct vop_getpages_args *ap; 109 { 110 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, 111 ap->a_reqpage); 112 } 113 114 int 115 ntfs_putpages(ap) 116 struct vop_putpages_args *ap; 117 { 118 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 119 ap->a_sync, ap->a_rtvals); 120 } 121 #endif 122 123 /* 124 * This is a noop, simply returning what one has been given. 125 */ 126 int 127 ntfs_bmap(ap) 128 struct vop_bmap_args /* { 129 struct vnode *a_vp; 130 daddr_t a_bn; 131 struct vnode **a_vpp; 132 daddr_t *a_bnp; 133 int *a_runp; 134 int *a_runb; 135 } */ *ap; 136 { 137 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 138 if (ap->a_vpp != NULL) 139 *ap->a_vpp = ap->a_vp; 140 if (ap->a_bnp != NULL) 141 *ap->a_bnp = ap->a_bn; 142 if (ap->a_runp != NULL) 143 *ap->a_runp = 0; 144 #if !defined(__NetBSD__) 145 if (ap->a_runb != NULL) 146 *ap->a_runb = 0; 147 #endif 148 return (0); 149 } 150 151 static int 152 ntfs_read(ap) 153 struct vop_read_args /* { 154 struct vnode *a_vp; 155 struct uio *a_uio; 156 int a_ioflag; 157 struct ucred *a_cred; 158 } */ *ap; 159 { 160 register struct vnode *vp = ap->a_vp; 161 register struct fnode *fp = VTOF(vp); 162 register struct ntnode *ip = FTONT(fp); 163 struct uio *uio = ap->a_uio; 164 struct ntfsmount *ntmp = ip->i_mp; 165 struct buf *bp; 166 daddr_t cn; 167 int resid, off, toread; 168 int error; 169 170 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)); 171 172 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 173 174 /* don't allow reading after end of file */ 175 if (uio->uio_offset > fp->f_size) 176 return (0); 177 178 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset); 179 180 dprintf((", resid: %d\n", resid)); 181 182 error = 0; 183 while (resid) { 184 cn = ntfs_btocn(uio->uio_offset); 185 off = ntfs_btocnoff(uio->uio_offset); 186 187 toread = min(off + resid, ntfs_cntob(1)); 188 189 error = bread(vp, cn, ntfs_cntob(1), NOCRED, &bp); 190 if (error) { 191 brelse(bp); 192 break; 193 } 194 195 error = uiomove(bp->b_data + off, toread - off, uio); 196 if(error) { 197 brelse(bp); 198 break; 199 } 200 brelse(bp); 201 202 resid -= toread - off; 203 } 204 205 return (error); 206 } 207 208 #if !defined(__FreeBSD__) 209 210 static int 211 ntfs_bypass(ap) 212 struct vop_generic_args /* { 213 struct vnodeop_desc *a_desc; 214 <other random data follows, presumably> 215 } */ *ap; 216 { 217 int error = ENOTTY; 218 dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name)); 219 return (error); 220 } 221 222 #endif 223 224 static int 225 ntfs_getattr(ap) 226 struct vop_getattr_args /* { 227 struct vnode *a_vp; 228 struct vattr *a_vap; 229 struct ucred *a_cred; 230 struct proc *a_p; 231 } */ *ap; 232 { 233 register struct vnode *vp = ap->a_vp; 234 register struct fnode *fp = VTOF(vp); 235 register struct ntnode *ip = FTONT(fp); 236 register struct vattr *vap = ap->a_vap; 237 238 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 239 240 #if defined(__FreeBSD__) 241 vap->va_fsid = dev2udev(ip->i_dev); 242 #else /* NetBSD */ 243 vap->va_fsid = ip->i_dev; 244 #endif 245 vap->va_fileid = ip->i_number; 246 vap->va_mode = ip->i_mp->ntm_mode; 247 vap->va_nlink = ip->i_nlink; 248 vap->va_uid = ip->i_mp->ntm_uid; 249 vap->va_gid = ip->i_mp->ntm_gid; 250 vap->va_rdev = 0; /* XXX UNODEV ? */ 251 vap->va_size = fp->f_size; 252 vap->va_bytes = fp->f_allocated; 253 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 254 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 255 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 256 vap->va_flags = ip->i_flag; 257 vap->va_gen = 0; 258 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 259 vap->va_type = vp->v_type; 260 vap->va_filerev = 0; 261 return (0); 262 } 263 264 265 /* 266 * Last reference to an ntnode. If necessary, write or delete it. 267 */ 268 int 269 ntfs_inactive(ap) 270 struct vop_inactive_args /* { 271 struct vnode *a_vp; 272 } */ *ap; 273 { 274 register struct vnode *vp = ap->a_vp; 275 #ifdef NTFS_DEBUG 276 register struct ntnode *ip = VTONT(vp); 277 #endif 278 279 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 280 281 if (ntfs_prtactive && vp->v_usecount != 0) 282 vprint("ntfs_inactive: pushing active", vp); 283 284 VOP__UNLOCK(vp, 0, ap->a_p); 285 286 /* XXX since we don't support any filesystem changes 287 * right now, nothing more needs to be done 288 */ 289 return (0); 290 } 291 292 /* 293 * Reclaim an fnode/ntnode so that it can be used for other purposes. 294 */ 295 int 296 ntfs_reclaim(ap) 297 struct vop_reclaim_args /* { 298 struct vnode *a_vp; 299 } */ *ap; 300 { 301 register struct vnode *vp = ap->a_vp; 302 register struct fnode *fp = VTOF(vp); 303 register struct ntnode *ip = FTONT(fp); 304 int error; 305 306 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 307 308 if (ntfs_prtactive && vp->v_usecount != 0) 309 vprint("ntfs_reclaim: pushing active", vp); 310 311 if ((error = ntfs_ntget(ip)) != 0) 312 return (error); 313 314 /* Purge old data structures associated with the inode. */ 315 cache_purge(vp); 316 317 ntfs_frele(fp); 318 ntfs_ntput(ip); 319 vp->v_data = NULL; 320 321 return (0); 322 } 323 324 static int 325 ntfs_print(ap) 326 struct vop_print_args /* { 327 struct vnode *a_vp; 328 } */ *ap; 329 { 330 return (0); 331 } 332 333 /* 334 * Calculate the logical to physical mapping if not done already, 335 * then call the device strategy routine. 336 */ 337 int 338 ntfs_strategy(ap) 339 struct vop_strategy_args /* { 340 struct buf *a_bp; 341 } */ *ap; 342 { 343 register struct buf *bp = ap->a_bp; 344 register struct vnode *vp = bp->b_vp; 345 register struct fnode *fp = VTOF(vp); 346 register struct ntnode *ip = FTONT(fp); 347 struct ntfsmount *ntmp = ip->i_mp; 348 int error; 349 350 #ifdef __FreeBSD__ 351 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 352 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 353 (u_int32_t)bp->b_lblkno)); 354 #else 355 dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n", 356 (u_int32_t)bp->b_blkno, 357 (u_int32_t)bp->b_lblkno)); 358 #endif 359 360 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 361 (u_int32_t)bp->b_bcount,bp->b_flags)); 362 363 if (bp->b_flags & B_READ) { 364 u_int32_t toread; 365 366 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 367 clrbuf(bp); 368 error = 0; 369 } else { 370 toread = min(bp->b_bcount, 371 fp->f_size-ntfs_cntob(bp->b_blkno)); 372 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 373 toread,(u_int32_t)fp->f_size)); 374 375 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 376 fp->f_attrname, ntfs_cntob(bp->b_blkno), 377 toread, bp->b_data, NULL); 378 379 if (error) { 380 printf("ntfs_strategy: ntfs_readattr failed\n"); 381 bp->b_error = error; 382 bp->b_flags |= B_ERROR; 383 } 384 385 bzero(bp->b_data + toread, bp->b_bcount - toread); 386 } 387 } else { 388 size_t tmp; 389 u_int32_t towrite; 390 391 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 392 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 393 bp->b_error = error = EFBIG; 394 bp->b_flags |= B_ERROR; 395 } else { 396 towrite = min(bp->b_bcount, 397 fp->f_size-ntfs_cntob(bp->b_blkno)); 398 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 399 towrite,(u_int32_t)fp->f_size)); 400 401 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 402 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 403 bp->b_data, &tmp, NULL); 404 405 if (error) { 406 printf("ntfs_strategy: ntfs_writeattr fail\n"); 407 bp->b_error = error; 408 bp->b_flags |= B_ERROR; 409 } 410 } 411 } 412 biodone(bp); 413 return (error); 414 } 415 416 static int 417 ntfs_write(ap) 418 struct vop_write_args /* { 419 struct vnode *a_vp; 420 struct uio *a_uio; 421 int a_ioflag; 422 struct ucred *a_cred; 423 } */ *ap; 424 { 425 register struct vnode *vp = ap->a_vp; 426 register struct fnode *fp = VTOF(vp); 427 register struct ntnode *ip = FTONT(fp); 428 struct uio *uio = ap->a_uio; 429 struct ntfsmount *ntmp = ip->i_mp; 430 u_int64_t towrite; 431 size_t written; 432 int error; 433 434 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)); 435 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 436 437 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 438 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 439 return (EFBIG); 440 } 441 442 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 443 444 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 445 446 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 447 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 448 #ifdef NTFS_DEBUG 449 if (error) 450 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 451 #endif 452 453 return (error); 454 } 455 456 int 457 ntfs_access(ap) 458 struct vop_access_args /* { 459 struct vnode *a_vp; 460 int a_mode; 461 struct ucred *a_cred; 462 struct proc *a_p; 463 } */ *ap; 464 { 465 struct vnode *vp = ap->a_vp; 466 struct ntnode *ip = VTONT(vp); 467 struct ucred *cred = ap->a_cred; 468 mode_t mask, mode = ap->a_mode; 469 register gid_t *gp; 470 int i; 471 #ifdef QUOTA 472 int error; 473 #endif 474 475 dprintf(("ntfs_access: %d\n",ip->i_number)); 476 477 /* 478 * Disallow write attempts on read-only file systems; 479 * unless the file is a socket, fifo, or a block or 480 * character device resident on the file system. 481 */ 482 if (mode & VWRITE) { 483 switch ((int)vp->v_type) { 484 case VDIR: 485 case VLNK: 486 case VREG: 487 if (vp->v_mount->mnt_flag & MNT_RDONLY) 488 return (EROFS); 489 #ifdef QUOTA 490 if (error = getinoquota(ip)) 491 return (error); 492 #endif 493 break; 494 } 495 } 496 497 /* Otherwise, user id 0 always gets access. */ 498 if (cred->cr_uid == 0) 499 return (0); 500 501 mask = 0; 502 503 /* Otherwise, check the owner. */ 504 if (cred->cr_uid == ip->i_mp->ntm_uid) { 505 if (mode & VEXEC) 506 mask |= S_IXUSR; 507 if (mode & VREAD) 508 mask |= S_IRUSR; 509 if (mode & VWRITE) 510 mask |= S_IWUSR; 511 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 512 } 513 514 /* Otherwise, check the groups. */ 515 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 516 if (ip->i_mp->ntm_gid == *gp) { 517 if (mode & VEXEC) 518 mask |= S_IXGRP; 519 if (mode & VREAD) 520 mask |= S_IRGRP; 521 if (mode & VWRITE) 522 mask |= S_IWGRP; 523 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 524 } 525 526 /* Otherwise, check everyone else. */ 527 if (mode & VEXEC) 528 mask |= S_IXOTH; 529 if (mode & VREAD) 530 mask |= S_IROTH; 531 if (mode & VWRITE) 532 mask |= S_IWOTH; 533 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 534 } 535 536 /* 537 * Open called. 538 * 539 * Nothing to do. 540 */ 541 /* ARGSUSED */ 542 static int 543 ntfs_open(ap) 544 struct vop_open_args /* { 545 struct vnode *a_vp; 546 int a_mode; 547 struct ucred *a_cred; 548 struct proc *a_p; 549 } */ *ap; 550 { 551 #if NTFS_DEBUG 552 register struct vnode *vp = ap->a_vp; 553 register struct ntnode *ip = VTONT(vp); 554 555 printf("ntfs_open: %d\n",ip->i_number); 556 #endif 557 558 /* 559 * Files marked append-only must be opened for appending. 560 */ 561 562 return (0); 563 } 564 565 /* 566 * Close called. 567 * 568 * Update the times on the inode. 569 */ 570 /* ARGSUSED */ 571 static int 572 ntfs_close(ap) 573 struct vop_close_args /* { 574 struct vnode *a_vp; 575 int a_fflag; 576 struct ucred *a_cred; 577 struct proc *a_p; 578 } */ *ap; 579 { 580 #if NTFS_DEBUG 581 register struct vnode *vp = ap->a_vp; 582 register struct ntnode *ip = VTONT(vp); 583 584 printf("ntfs_close: %d\n",ip->i_number); 585 #endif 586 587 return (0); 588 } 589 590 int 591 ntfs_readdir(ap) 592 struct vop_readdir_args /* { 593 struct vnode *a_vp; 594 struct uio *a_uio; 595 struct ucred *a_cred; 596 int *a_ncookies; 597 u_int **cookies; 598 } */ *ap; 599 { 600 register struct vnode *vp = ap->a_vp; 601 register struct fnode *fp = VTOF(vp); 602 register struct ntnode *ip = FTONT(fp); 603 struct uio *uio = ap->a_uio; 604 struct ntfsmount *ntmp = ip->i_mp; 605 int i, error = 0; 606 u_int32_t faked = 0, num; 607 int ncookies = 0; 608 struct dirent cde; 609 off_t off; 610 611 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 612 613 off = uio->uio_offset; 614 615 /* Simulate . in every dir except ROOT */ 616 if( ip->i_number != NTFS_ROOTINO ) { 617 struct dirent dot = { NTFS_ROOTINO, 618 sizeof(struct dirent), DT_DIR, 1, "." }; 619 620 if( uio->uio_offset < sizeof(struct dirent) ) { 621 dot.d_fileno = ip->i_number; 622 error = uiomove((char *)&dot,sizeof(struct dirent),uio); 623 if(error) 624 return (error); 625 626 ncookies ++; 627 } 628 } 629 630 /* Simulate .. in every dir including ROOT */ 631 if( uio->uio_offset < 2 * sizeof(struct dirent) ) { 632 struct dirent dotdot = { NTFS_ROOTINO, 633 sizeof(struct dirent), DT_DIR, 2, ".." }; 634 635 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio); 636 if(error) 637 return (error); 638 639 ncookies ++; 640 } 641 642 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 643 num = uio->uio_offset / sizeof(struct dirent) - faked; 644 645 while( uio->uio_resid >= sizeof(struct dirent) ) { 646 struct attr_indexentry *iep; 647 648 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 649 650 if(error) 651 return (error); 652 653 if( NULL == iep ) 654 break; 655 656 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 657 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 658 { 659 if(!ntfs_isnamepermitted(ntmp,iep)) 660 continue; 661 662 for(i=0; i<iep->ie_fnamelen; i++) { 663 cde.d_name[i] = NTFS_U28(iep->ie_fname[i]); 664 } 665 cde.d_name[i] = '\0'; 666 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 667 num, cde.d_name, iep->ie_fnametype, 668 iep->ie_flag)); 669 cde.d_namlen = iep->ie_fnamelen; 670 cde.d_fileno = iep->ie_number; 671 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 672 cde.d_reclen = sizeof(struct dirent); 673 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg")); 674 675 error = uiomove((char *)&cde, sizeof(struct dirent), uio); 676 if(error) 677 return (error); 678 679 ncookies++; 680 num++; 681 } 682 } 683 684 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 685 ncookies,(u_int)(uio->uio_offset - off))); 686 dprintf(("ntfs_readdir: off: %d resid: %d\n", 687 (u_int32_t)uio->uio_offset,uio->uio_resid)); 688 689 if (!error && ap->a_ncookies != NULL) { 690 struct dirent* dpStart; 691 struct dirent* dp; 692 #if defined(__FreeBSD__) 693 u_long *cookies; 694 u_long *cookiep; 695 #else /* defined(__NetBSD__) */ 696 off_t *cookies; 697 off_t *cookiep; 698 #endif 699 700 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 701 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 702 panic("ntfs_readdir: unexpected uio from NFS server"); 703 dpStart = (struct dirent *) 704 ((caddr_t)uio->uio_iov->iov_base - 705 (uio->uio_offset - off)); 706 #if defined(__FreeBSD__) 707 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 708 M_TEMP, M_WAITOK); 709 #else /* defined(__NetBSD__) */ 710 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 711 M_TEMP, M_WAITOK); 712 #endif 713 for (dp = dpStart, cookiep = cookies, i=0; 714 i < ncookies; 715 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 716 off += dp->d_reclen; 717 *cookiep++ = (u_int) off; 718 } 719 *ap->a_ncookies = ncookies; 720 *ap->a_cookies = cookies; 721 } 722 /* 723 if (ap->a_eofflag) 724 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 725 */ 726 return (error); 727 } 728 729 int 730 ntfs_lookup(ap) 731 struct vop_lookup_args /* { 732 struct vnode *a_dvp; 733 struct vnode **a_vpp; 734 struct componentname *a_cnp; 735 } */ *ap; 736 { 737 register struct vnode *dvp = ap->a_dvp; 738 register struct ntnode *dip = VTONT(dvp); 739 struct ntfsmount *ntmp = dip->i_mp; 740 struct componentname *cnp = ap->a_cnp; 741 struct ucred *cred = cnp->cn_cred; 742 int error; 743 int lockparent = cnp->cn_flags & LOCKPARENT; 744 #if NTFS_DEBUG 745 int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); 746 #endif 747 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 748 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 749 dip->i_number, lockparent, wantparent)); 750 751 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc); 752 if(error) 753 return (error); 754 755 if ((cnp->cn_flags & ISLASTCN) && 756 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 757 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 758 return (EROFS); 759 760 #ifdef __NetBSD__ 761 /* 762 * We now have a segment name to search for, and a directory 763 * to search. 764 * 765 * Before tediously performing a linear scan of the directory, 766 * check the name cache to see if the directory/name pair 767 * we are looking for is known already. 768 */ 769 if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) 770 return (error); 771 #endif 772 773 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 774 dprintf(("ntfs_lookup: faking . directory in %d\n", 775 dip->i_number)); 776 777 VREF(dvp); 778 *ap->a_vpp = dvp; 779 error = 0; 780 } else if (cnp->cn_flags & ISDOTDOT) { 781 struct ntvattr *vap; 782 783 dprintf(("ntfs_lookup: faking .. directory in %d\n", 784 dip->i_number)); 785 786 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 787 if(error) 788 return (error); 789 790 VOP__UNLOCK(dvp,0,cnp->cn_proc); 791 cnp->cn_flags |= PDIRUNLOCK; 792 793 dprintf(("ntfs_lookup: parentdir: %d\n", 794 vap->va_a_name->n_pnumber)); 795 error = VFS_VGET(ntmp->ntm_mountp, 796 vap->va_a_name->n_pnumber,ap->a_vpp); 797 ntfs_ntvattrrele(vap); 798 if (error) { 799 if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_proc)==0) 800 cnp->cn_flags &= ~PDIRUNLOCK; 801 return (error); 802 } 803 804 if (lockparent && (cnp->cn_flags & ISLASTCN)) { 805 error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_proc); 806 if (error) { 807 vput( *(ap->a_vpp) ); 808 return (error); 809 } 810 cnp->cn_flags &= ~PDIRUNLOCK; 811 } 812 } else { 813 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 814 if (error) { 815 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 816 return (error); 817 } 818 819 dprintf(("ntfs_lookup: found ino: %d\n", 820 VTONT(*ap->a_vpp)->i_number)); 821 822 if(!lockparent || !(cnp->cn_flags & ISLASTCN)) 823 VOP__UNLOCK(dvp, 0, cnp->cn_proc); 824 } 825 826 if (cnp->cn_flags & MAKEENTRY) 827 cache_enter(dvp, *ap->a_vpp, cnp); 828 829 return (error); 830 } 831 832 #if defined(__FreeBSD__) 833 /* 834 * Flush the blocks of a file to disk. 835 * 836 * This function is worthless for vnodes that represent directories. Maybe we 837 * could just do a sync if they try an fsync on a directory file. 838 */ 839 static int 840 ntfs_fsync(ap) 841 struct vop_fsync_args /* { 842 struct vnode *a_vp; 843 struct ucred *a_cred; 844 int a_waitfor; 845 struct proc *a_p; 846 } */ *ap; 847 { 848 return (0); 849 } 850 #endif 851 852 /* 853 * Return POSIX pathconf information applicable to NTFS filesystem 854 */ 855 int 856 ntfs_pathconf(v) 857 void *v; 858 { 859 struct vop_pathconf_args /* { 860 struct vnode *a_vp; 861 int a_name; 862 register_t *a_retval; 863 } */ *ap = v; 864 865 switch (ap->a_name) { 866 case _PC_LINK_MAX: 867 *ap->a_retval = 1; 868 return (0); 869 case _PC_NAME_MAX: 870 *ap->a_retval = NTFS_MAXFILENAME; 871 return (0); 872 case _PC_PATH_MAX: 873 *ap->a_retval = PATH_MAX; 874 return (0); 875 case _PC_CHOWN_RESTRICTED: 876 *ap->a_retval = 1; 877 return (0); 878 case _PC_NO_TRUNC: 879 *ap->a_retval = 0; 880 return (0); 881 #if defined(__NetBSD__) 882 case _PC_SYNC_IO: 883 *ap->a_retval = 1; 884 return (0); 885 case _PC_FILESIZEBITS: 886 *ap->a_retval = 64; 887 return (0); 888 #endif 889 default: 890 return (EINVAL); 891 } 892 /* NOTREACHED */ 893 } 894 895 /* 896 * Global vfs data structures 897 */ 898 vop_t **ntfs_vnodeop_p; 899 #if defined(__FreeBSD__) 900 static 901 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 902 { &vop_default_desc, (vop_t *)vop_defaultop }, 903 904 { &vop_getattr_desc, (vop_t *)ntfs_getattr }, 905 { &vop_inactive_desc, (vop_t *)ntfs_inactive }, 906 { &vop_reclaim_desc, (vop_t *)ntfs_reclaim }, 907 { &vop_print_desc, (vop_t *)ntfs_print }, 908 { &vop_pathconf_desc, ntfs_pathconf }, 909 910 { &vop_islocked_desc, (vop_t *)vop_stdislocked }, 911 { &vop_unlock_desc, (vop_t *)vop_stdunlock }, 912 { &vop_lock_desc, (vop_t *)vop_stdlock }, 913 { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup }, 914 { &vop_lookup_desc, (vop_t *)vfs_cache_lookup }, 915 916 { &vop_access_desc, (vop_t *)ntfs_access }, 917 { &vop_close_desc, (vop_t *)ntfs_close }, 918 { &vop_open_desc, (vop_t *)ntfs_open }, 919 { &vop_readdir_desc, (vop_t *)ntfs_readdir }, 920 { &vop_fsync_desc, (vop_t *)ntfs_fsync }, 921 922 { &vop_bmap_desc, (vop_t *)ntfs_bmap }, 923 { &vop_getpages_desc, (vop_t *) ntfs_getpages }, 924 { &vop_putpages_desc, (vop_t *) ntfs_putpages }, 925 { &vop_strategy_desc, (vop_t *)ntfs_strategy }, 926 { &vop_bwrite_desc, (vop_t *)vop_stdbwrite }, 927 { &vop_read_desc, (vop_t *)ntfs_read }, 928 { &vop_write_desc, (vop_t *)ntfs_write }, 929 930 { NULL, NULL } 931 }; 932 933 static 934 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 935 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 936 937 VNODEOP_SET(ntfs_vnodeop_opv_desc); 938 939 #else /* !FreeBSD */ 940 941 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 942 { &vop_default_desc, (vop_t *) ntfs_bypass }, 943 { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */ 944 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 945 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 946 { &vop_open_desc, (vop_t *) ntfs_open }, /* open */ 947 { &vop_close_desc,(vop_t *) ntfs_close }, /* close */ 948 { &vop_access_desc, (vop_t *) ntfs_access }, /* access */ 949 { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */ 950 { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */ 951 { &vop_read_desc, (vop_t *) ntfs_read }, /* read */ 952 { &vop_write_desc, (vop_t *) ntfs_write }, /* write */ 953 { &vop_lease_desc, genfs_lease_check }, /* lease */ 954 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 955 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 956 { &vop_poll_desc, genfs_poll }, /* poll */ 957 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 958 { &vop_mmap_desc, genfs_eopnotsupp }, /* mmap */ 959 { &vop_fsync_desc, genfs_fsync }, /* fsync */ 960 { &vop_seek_desc, genfs_seek }, /* seek */ 961 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 962 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 963 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 964 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 965 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 966 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 967 { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */ 968 { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */ 969 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 970 { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */ 971 { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */ 972 { &vop_lock_desc, genfs_lock }, /* lock */ 973 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 974 { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */ 975 { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */ 976 { &vop_print_desc, (vop_t *) ntfs_print }, /* print */ 977 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 978 { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */ 979 { &vop_advlock_desc, genfs_nullop }, /* advlock */ 980 { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */ 981 { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */ 982 { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */ 983 { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */ 984 { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */ 985 { &vop_update_desc, genfs_eopnotsupp }, /* update */ 986 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 987 { (struct vnodeop_desc *)NULL, (int (*) __P((void *)))NULL } 988 }; 989 struct vnodeopv_desc ntfs_vnodeop_opv_desc = 990 { &ntfs_vnodeop_p, ntfs_vnodeop_entries }; 991 992 #endif
Cache object: da4b9c66134d587cac72ef80a033f97d
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