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 1.33 2006/05/06 18:48:53 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, off_t a_loffset, struct vnode **a_vpp, 128 * daddr_t *a_doffsetp, int *a_runp, int *a_runb) 129 */ 130 int 131 ntfs_bmap(struct vop_bmap_args *ap) 132 { 133 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 134 if (ap->a_vpp != NULL) 135 *ap->a_vpp = ap->a_vp; 136 if (ap->a_doffsetp != NULL) 137 *ap->a_doffsetp = ap->a_loffset; 138 if (ap->a_runp != NULL) 139 *ap->a_runp = 0; 140 #if !defined(__NetBSD__) 141 if (ap->a_runb != NULL) 142 *ap->a_runb = 0; 143 #endif 144 return (0); 145 } 146 147 /* 148 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 149 * struct ucred *a_cred) 150 */ 151 static int 152 ntfs_read(struct vop_read_args *ap) 153 { 154 struct vnode *vp = ap->a_vp; 155 struct fnode *fp = VTOF(vp); 156 struct ntnode *ip = FTONT(fp); 157 struct uio *uio = ap->a_uio; 158 struct ntfsmount *ntmp = ip->i_mp; 159 struct buf *bp; 160 daddr_t cn; 161 int resid, off, toread; 162 int error; 163 164 dprintf(("ntfs_read: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 165 166 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 167 168 /* don't allow reading after end of file */ 169 if (uio->uio_offset > fp->f_size) 170 return (0); 171 172 resid = min(uio->uio_resid, fp->f_size - uio->uio_offset); 173 174 dprintf((", resid: %d\n", resid)); 175 176 error = 0; 177 while (resid) { 178 cn = ntfs_btocn(uio->uio_offset); 179 off = ntfs_btocnoff(uio->uio_offset); 180 181 toread = min(off + resid, ntfs_cntob(1)); 182 183 error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); 184 if (error) { 185 brelse(bp); 186 break; 187 } 188 189 error = uiomove(bp->b_data + off, toread - off, uio); 190 if(error) { 191 brelse(bp); 192 break; 193 } 194 brelse(bp); 195 196 resid -= toread - off; 197 } 198 199 return (error); 200 } 201 202 #if !defined(__DragonFly__) 203 204 /* 205 * ntfs_bypass(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 != 1) 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 != 1) 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 u_int32_t toread; 334 u_int32_t towrite; 335 size_t tmp; 336 int error; 337 338 dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n", 339 bp->b_loffset, bio->bio_offset)); 340 341 dprintf(("strategy: bcount: %d flags: 0x%lx\n", 342 (u_int32_t)bp->b_bcount,bp->b_flags)); 343 344 bp->b_error = 0; 345 346 switch(bp->b_cmd) { 347 case BUF_CMD_READ: 348 if (bio->bio_offset >= fp->f_size) { 349 clrbuf(bp); 350 error = 0; 351 } else { 352 toread = min(bp->b_bcount, 353 fp->f_size - bio->bio_offset); 354 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 355 toread,(u_int32_t)fp->f_size)); 356 357 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 358 fp->f_attrname, bio->bio_offset, 359 toread, bp->b_data, NULL); 360 361 if (error) { 362 printf("ntfs_strategy: ntfs_readattr failed\n"); 363 bp->b_error = error; 364 bp->b_flags |= B_ERROR; 365 } 366 367 bzero(bp->b_data + toread, bp->b_bcount - toread); 368 } 369 break; 370 case BUF_CMD_WRITE: 371 if (bio->bio_offset + bp->b_bcount >= fp->f_size) { 372 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 373 bp->b_error = error = EFBIG; 374 bp->b_flags |= B_ERROR; 375 } else { 376 towrite = min(bp->b_bcount, 377 fp->f_size - bio->bio_offset); 378 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 379 towrite,(u_int32_t)fp->f_size)); 380 381 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 382 fp->f_attrname, bio->bio_offset,towrite, 383 bp->b_data, &tmp, NULL); 384 385 if (error) { 386 printf("ntfs_strategy: ntfs_writeattr fail\n"); 387 bp->b_error = error; 388 bp->b_flags |= B_ERROR; 389 } 390 } 391 break; 392 default: 393 panic("ntfs: bad b_cmd %d\n", bp->b_cmd); 394 } 395 biodone(bio); 396 return (error); 397 } 398 399 /* 400 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 401 * struct ucred *a_cred) 402 */ 403 static int 404 ntfs_write(struct vop_write_args *ap) 405 { 406 struct vnode *vp = ap->a_vp; 407 struct fnode *fp = VTOF(vp); 408 struct ntnode *ip = FTONT(fp); 409 struct uio *uio = ap->a_uio; 410 struct ntfsmount *ntmp = ip->i_mp; 411 u_int64_t towrite; 412 size_t written; 413 int error; 414 415 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)); 416 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 417 418 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 419 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 420 return (EFBIG); 421 } 422 423 towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); 424 425 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 426 427 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 428 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 429 #ifdef NTFS_DEBUG 430 if (error) 431 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 432 #endif 433 434 return (error); 435 } 436 437 /* 438 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 439 * struct thread *a_td) 440 */ 441 int 442 ntfs_access(struct vop_access_args *ap) 443 { 444 struct vnode *vp = ap->a_vp; 445 struct ntnode *ip = VTONT(vp); 446 struct ucred *cred = ap->a_cred; 447 mode_t mask, mode = ap->a_mode; 448 gid_t *gp; 449 int i; 450 #ifdef QUOTA 451 int error; 452 #endif 453 454 dprintf(("ntfs_access: %d\n",ip->i_number)); 455 456 /* 457 * Disallow write attempts on read-only file systems; 458 * unless the file is a socket, fifo, or a block or 459 * character device resident on the file system. 460 */ 461 if (mode & VWRITE) { 462 switch ((int)vp->v_type) { 463 case VDIR: 464 case VLNK: 465 case VREG: 466 if (vp->v_mount->mnt_flag & MNT_RDONLY) 467 return (EROFS); 468 #ifdef QUOTA 469 if (error = getinoquota(ip)) 470 return (error); 471 #endif 472 break; 473 } 474 } 475 476 /* Otherwise, user id 0 always gets access. */ 477 if (cred->cr_uid == 0) 478 return (0); 479 480 mask = 0; 481 482 /* Otherwise, check the owner. */ 483 if (cred->cr_uid == ip->i_mp->ntm_uid) { 484 if (mode & VEXEC) 485 mask |= S_IXUSR; 486 if (mode & VREAD) 487 mask |= S_IRUSR; 488 if (mode & VWRITE) 489 mask |= S_IWUSR; 490 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 491 } 492 493 /* Otherwise, check the groups. */ 494 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 495 if (ip->i_mp->ntm_gid == *gp) { 496 if (mode & VEXEC) 497 mask |= S_IXGRP; 498 if (mode & VREAD) 499 mask |= S_IRGRP; 500 if (mode & VWRITE) 501 mask |= S_IWGRP; 502 return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); 503 } 504 505 /* Otherwise, check everyone else. */ 506 if (mode & VEXEC) 507 mask |= S_IXOTH; 508 if (mode & VREAD) 509 mask |= S_IROTH; 510 if (mode & VWRITE) 511 mask |= S_IWOTH; 512 return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); 513 } 514 515 /* 516 * Open called. 517 * 518 * Nothing to do. 519 * 520 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 521 * struct thread *a_td) 522 */ 523 /* ARGSUSED */ 524 static int 525 ntfs_open(struct vop_open_args *ap) 526 { 527 return (vop_stdopen(ap)); 528 } 529 530 /* 531 * Close called. 532 * 533 * Update the times on the inode. 534 * 535 * ntfs_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred, 536 * struct thread *a_td) 537 */ 538 /* ARGSUSED */ 539 static int 540 ntfs_close(struct vop_close_args *ap) 541 { 542 #if NTFS_DEBUG 543 struct vnode *vp = ap->a_vp; 544 struct ntnode *ip = VTONT(vp); 545 546 printf("ntfs_close: %d\n",ip->i_number); 547 #endif 548 549 return (vop_stdclose(ap)); 550 } 551 552 /* 553 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 554 * int *a_ncookies, u_int **cookies) 555 */ 556 int 557 ntfs_readdir(struct vop_readdir_args *ap) 558 { 559 struct vnode *vp = ap->a_vp; 560 struct fnode *fp = VTOF(vp); 561 struct ntnode *ip = FTONT(fp); 562 struct uio *uio = ap->a_uio; 563 struct ntfsmount *ntmp = ip->i_mp; 564 int i, error = 0; 565 u_int32_t faked = 0, num, off; 566 int ncookies = 0; 567 char convname[NTFS_MAXFILENAME + 1]; 568 569 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 570 571 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 572 return (EINVAL); 573 574 /* 575 * uio->uio_offset carries the number of the entry 576 * where we should start returning dirents. 577 * 578 * We fake up "." if we're not reading the FS root 579 * and we always fake up "..". 580 * 581 * off contains the entry we are starting at, 582 * num increments while we are reading. 583 */ 584 585 off = num = uio->uio_offset; 586 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 587 588 /* Simulate . in every dir except ROOT */ 589 if (ip->i_number != NTFS_ROOTINO && num == 0) { 590 if (vop_write_dirent(&error, uio, ip->i_number, 591 DT_DIR, 1, ".")) 592 return (0); 593 if (error) 594 return (error); 595 596 num++; 597 ncookies++; 598 } 599 600 /* Simulate .. in every dir including ROOT */ 601 if (num == faked - 1) { 602 /* XXX NTFS_ROOTINO seems to be wrong here */ 603 if (vop_write_dirent(&error, uio, NTFS_ROOTINO, 604 DT_DIR, 2, "..")) 605 goto readdone; 606 if(error) 607 return (error); 608 609 num++; 610 ncookies++; 611 } 612 613 for (;;) { 614 struct attr_indexentry *iep; 615 616 /* 617 * num is the number of the entry we will return, 618 * but ntfs_ntreaddir takes the entry number of the 619 * ntfs directory listing, so subtract the faked 620 * . and .. entries. 621 */ 622 error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); 623 624 if(error) 625 return (error); 626 627 if( NULL == iep ) 628 break; 629 630 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); 631 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 632 { 633 if(!ntfs_isnamepermitted(ntmp,iep)) 634 continue; 635 636 for (i=0; i < iep->ie_fnamelen; i++) 637 convname[i] = NTFS_U28(iep->ie_fname[i]); 638 convname[i] = '\0'; 639 640 if (vop_write_dirent(&error, uio, iep->ie_number, 641 (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, 642 iep->ie_fnamelen, convname)) 643 goto readdone; 644 645 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " 646 "flag: %d, %s\n", 647 ncookies, convname, iep->ie_fnametype, 648 iep->ie_flag, 649 (iep->ie_fflag & NTFS_FFLAG_DIR) ? 650 "dir" : "reg")); 651 652 if(error) 653 return (error); 654 655 ncookies++; 656 num++; 657 } 658 } 659 660 readdone: 661 uio->uio_offset = num; 662 663 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 664 ncookies,(u_int)(uio->uio_offset - off))); 665 dprintf(("ntfs_readdir: off: %d resid: %d\n", 666 (u_int32_t)uio->uio_offset,uio->uio_resid)); 667 668 if (!error && ap->a_ncookies != NULL) { 669 #if defined(__DragonFly__) 670 u_long *cookies; 671 u_long *cookiep; 672 #else /* defined(__NetBSD__) */ 673 off_t *cookies; 674 off_t *cookiep; 675 #endif 676 677 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 678 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 679 panic("ntfs_readdir: unexpected uio from NFS server"); 680 #if defined(__DragonFly__) 681 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 682 M_TEMP, M_WAITOK); 683 #else /* defined(__NetBSD__) */ 684 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 685 M_TEMP, M_WAITOK); 686 #endif 687 cookiep = cookies; 688 while (off < num) 689 *cookiep++ = ++off; 690 691 *ap->a_ncookies = ncookies; 692 *ap->a_cookies = cookies; 693 } 694 /* 695 if (ap->a_eofflag) 696 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 697 */ 698 return (error); 699 } 700 701 /* 702 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 703 * struct componentname *a_cnp) 704 */ 705 int 706 ntfs_lookup(struct vop_old_lookup_args *ap) 707 { 708 struct vnode *dvp = ap->a_dvp; 709 struct ntnode *dip = VTONT(dvp); 710 struct ntfsmount *ntmp = dip->i_mp; 711 struct componentname *cnp = ap->a_cnp; 712 int error; 713 int lockparent = cnp->cn_flags & CNP_LOCKPARENT; 714 #if NTFS_DEBUG 715 int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 716 #endif 717 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", 718 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 719 dip->i_number, lockparent, wantparent)); 720 721 *ap->a_vpp = NULL; 722 723 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 724 dprintf(("ntfs_lookup: faking . directory in %d\n", 725 dip->i_number)); 726 727 vref(dvp); 728 *ap->a_vpp = dvp; 729 error = 0; 730 } else if (cnp->cn_flags & CNP_ISDOTDOT) { 731 struct ntvattr *vap; 732 733 dprintf(("ntfs_lookup: faking .. directory in %d\n", 734 dip->i_number)); 735 736 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 737 if(error) 738 return (error); 739 740 VOP__UNLOCK(dvp, 0); 741 cnp->cn_flags |= CNP_PDIRUNLOCK; 742 743 dprintf(("ntfs_lookup: parentdir: %d\n", 744 vap->va_a_name->n_pnumber)); 745 error = VFS_VGET(ntmp->ntm_mountp, 746 vap->va_a_name->n_pnumber,ap->a_vpp); 747 ntfs_ntvattrrele(vap); 748 if (error) { 749 if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) 750 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 751 return (error); 752 } 753 754 if (lockparent) { 755 error = VN_LOCK(dvp, LK_EXCLUSIVE); 756 if (error) { 757 vput(*ap->a_vpp); 758 *ap->a_vpp = NULL; 759 return (error); 760 } 761 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 762 } 763 } else { 764 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 765 if (error) { 766 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 767 return (error); 768 } 769 770 dprintf(("ntfs_lookup: found ino: %d\n", 771 VTONT(*ap->a_vpp)->i_number)); 772 773 if (!lockparent) 774 VOP__UNLOCK(dvp, 0); 775 } 776 return (error); 777 } 778 779 #if defined(__DragonFly__) 780 /* 781 * Flush the blocks of a file to disk. 782 * 783 * This function is worthless for vnodes that represent directories. Maybe we 784 * could just do a sync if they try an fsync on a directory file. 785 * 786 * ntfs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor, 787 * struct thread *a_td) 788 */ 789 static int 790 ntfs_fsync(struct vop_fsync_args *ap) 791 { 792 return (0); 793 } 794 #endif 795 796 /* 797 * Return POSIX pathconf information applicable to NTFS filesystem 798 */ 799 int 800 ntfs_pathconf(void *v) 801 { 802 struct vop_pathconf_args /* { 803 struct vnode *a_vp; 804 int a_name; 805 register_t *a_retval; 806 } */ *ap = v; 807 808 switch (ap->a_name) { 809 case _PC_LINK_MAX: 810 *ap->a_retval = 1; 811 return (0); 812 case _PC_NAME_MAX: 813 *ap->a_retval = NTFS_MAXFILENAME; 814 return (0); 815 case _PC_PATH_MAX: 816 *ap->a_retval = PATH_MAX; 817 return (0); 818 case _PC_CHOWN_RESTRICTED: 819 *ap->a_retval = 1; 820 return (0); 821 case _PC_NO_TRUNC: 822 *ap->a_retval = 0; 823 return (0); 824 #if defined(__NetBSD__) 825 case _PC_SYNC_IO: 826 *ap->a_retval = 1; 827 return (0); 828 case _PC_FILESIZEBITS: 829 *ap->a_retval = 64; 830 return (0); 831 #endif 832 default: 833 return (EINVAL); 834 } 835 /* NOTREACHED */ 836 } 837 838 /* 839 * Global vfs data structures 840 */ 841 struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = { 842 { &vop_default_desc, vop_defaultop }, 843 844 { &vop_getattr_desc, (vnodeopv_entry_t)ntfs_getattr }, 845 { &vop_inactive_desc, (vnodeopv_entry_t)ntfs_inactive }, 846 { &vop_reclaim_desc, (vnodeopv_entry_t)ntfs_reclaim }, 847 { &vop_print_desc, (vnodeopv_entry_t)ntfs_print }, 848 { &vop_pathconf_desc, (vnodeopv_entry_t)ntfs_pathconf }, 849 850 { &vop_islocked_desc, (vnodeopv_entry_t)vop_stdislocked }, 851 { &vop_unlock_desc, (vnodeopv_entry_t)vop_stdunlock }, 852 { &vop_lock_desc, (vnodeopv_entry_t)vop_stdlock }, 853 { &vop_old_lookup_desc, (vnodeopv_entry_t)ntfs_lookup }, 854 855 { &vop_access_desc, (vnodeopv_entry_t)ntfs_access }, 856 { &vop_close_desc, (vnodeopv_entry_t)ntfs_close }, 857 { &vop_open_desc, (vnodeopv_entry_t)ntfs_open }, 858 { &vop_readdir_desc, (vnodeopv_entry_t)ntfs_readdir }, 859 { &vop_fsync_desc, (vnodeopv_entry_t)ntfs_fsync }, 860 861 { &vop_bmap_desc, (vnodeopv_entry_t)ntfs_bmap }, 862 { &vop_getpages_desc, (vnodeopv_entry_t)ntfs_getpages }, 863 { &vop_putpages_desc, (vnodeopv_entry_t)ntfs_putpages }, 864 { &vop_strategy_desc, (vnodeopv_entry_t)ntfs_strategy }, 865 { &vop_read_desc, (vnodeopv_entry_t)ntfs_read }, 866 { &vop_write_desc, (vnodeopv_entry_t)ntfs_write }, 867 868 { NULL, NULL } 869 }; 870 871