ntfs_vfsops.c revision 1.8
1 /* $NetBSD: ntfs_vfsops.c,v 1.8 2003/06/28 14:21:50 darrenr Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 Semen Ustimenko 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * Id: ntfs_vfsops.c,v 1.7 1999/05/31 11:28:30 phk Exp 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: ntfs_vfsops.c,v 1.8 2003/06/28 14:21:50 darrenr Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/namei.h> 37 #include <sys/proc.h> 38 #include <sys/kernel.h> 39 #include <sys/vnode.h> 40 #include <sys/mount.h> 41 #include <sys/buf.h> 42 #include <sys/fcntl.h> 43 #include <sys/malloc.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 #include <sys/conf.h> 47 48 #if defined(__NetBSD__) 49 #include <uvm/uvm_extern.h> 50 #else 51 #include <vm/vm.h> 52 #endif 53 54 #include <miscfs/specfs/specdev.h> 55 56 /*#define NTFS_DEBUG 1*/ 57 #include <fs/ntfs/ntfs.h> 58 #include <fs/ntfs/ntfs_inode.h> 59 #include <fs/ntfs/ntfs_subr.h> 60 #include <fs/ntfs/ntfs_vfsops.h> 61 #include <fs/ntfs/ntfs_ihash.h> 62 #include <fs/ntfs/ntfsmount.h> 63 64 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 65 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 66 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 67 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 68 69 #if defined(__FreeBSD__) 70 static int ntfs_mount __P((struct mount *, char *, caddr_t, 71 struct nameidata *, struct proc *)); 72 #else 73 static int ntfs_mount __P((struct mount *, const char *, void *, 74 struct nameidata *, struct lwp *)); 75 #endif 76 static int ntfs_quotactl __P((struct mount *, int, uid_t, caddr_t, 77 struct lwp *)); 78 static int ntfs_root __P((struct mount *, struct vnode **, struct lwp *)); 79 static int ntfs_start __P((struct mount *, int, struct lwp *)); 80 static int ntfs_statfs __P((struct mount *, struct statfs *, 81 struct lwp *)); 82 static int ntfs_sync __P((struct mount *, int, struct ucred *, 83 struct lwp *)); 84 static int ntfs_unmount __P((struct mount *, int, struct lwp *)); 85 static int ntfs_vget __P((struct mount *mp, ino_t ino, 86 struct vnode **vpp, struct lwp *)); 87 static int ntfs_mountfs __P((struct vnode *, struct mount *, 88 struct ntfs_args *, struct lwp *)); 89 static int ntfs_vptofh __P((struct vnode *, struct fid *)); 90 91 #if defined(__FreeBSD__) 92 static int ntfs_init __P((struct vfsconf *)); 93 static int ntfs_fhtovp __P((struct mount *, struct fid *, 94 struct sockaddr *, struct vnode **, 95 int *, struct ucred **)); 96 #elif defined(__NetBSD__) 97 static void ntfs_init __P((void)); 98 static void ntfs_reinit __P((void)); 99 static void ntfs_done __P((void)); 100 static int ntfs_fhtovp __P((struct mount *, struct fid *, 101 struct vnode **, struct lwp *)); 102 static int ntfs_checkexp __P((struct mount *, struct mbuf *, 103 int *, struct ucred **)); 104 static int ntfs_mountroot __P((void)); 105 static int ntfs_sysctl __P((int *, u_int, void *, size_t *, void *, 106 size_t, struct lwp *)); 107 #else 108 static int ntfs_init __P((void)); 109 static int ntfs_fhtovp __P((struct mount *, struct fid *, 110 struct mbuf *, struct vnode **, 111 int *, struct ucred **)); 112 #endif 113 114 struct genfs_ops ntfs_genfsops = { 115 NULL, 116 NULL, 117 genfs_compat_gop_write, 118 }; 119 120 #ifdef __NetBSD__ 121 /* 122 * Verify a remote client has export rights and return these rights via. 123 * exflagsp and credanonp. 124 */ 125 static int 126 ntfs_checkexp(mp, nam, exflagsp, credanonp) 127 struct mount *mp; 128 struct mbuf *nam; 129 int *exflagsp; 130 struct ucred **credanonp; 131 { 132 struct netcred *np; 133 struct ntfsmount *ntm = VFSTONTFS(mp); 134 135 /* 136 * Get the export permission structure for this <mp, client> tuple. 137 */ 138 np = vfs_export_lookup(mp, &ntm->ntm_export, nam); 139 if (np == NULL) 140 return (EACCES); 141 142 *exflagsp = np->netc_exflags; 143 *credanonp = &np->netc_anon; 144 return (0); 145 } 146 147 /*ARGSUSED*/ 148 static int 149 ntfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, l) 150 int *name; 151 u_int namelen; 152 void *oldp; 153 size_t *oldlenp; 154 void *newp; 155 size_t newlen; 156 struct lwp *l; 157 { 158 return (EINVAL); 159 } 160 161 static int 162 ntfs_mountroot() 163 { 164 struct mount *mp; 165 struct lwp *l = curlwp; /* XXX */ 166 int error; 167 struct ntfs_args args; 168 169 if (root_device->dv_class != DV_DISK) 170 return (ENODEV); 171 172 /* 173 * Get vnodes for rootdev. 174 */ 175 if (bdevvp(rootdev, &rootvp)) 176 panic("ntfs_mountroot: can't setup rootvp"); 177 178 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 179 vrele(rootvp); 180 return (error); 181 } 182 183 args.flag = 0; 184 args.uid = 0; 185 args.gid = 0; 186 args.mode = 0777; 187 188 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 189 mp->mnt_op->vfs_refcount--; 190 vfs_unbusy(mp); 191 free(mp, M_MOUNT); 192 vrele(rootvp); 193 return (error); 194 } 195 196 simple_lock(&mountlist_slock); 197 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 198 simple_unlock(&mountlist_slock); 199 (void)ntfs_statfs(mp, &mp->mnt_stat, l); 200 vfs_unbusy(mp); 201 return (0); 202 } 203 204 static void 205 ntfs_init() 206 { 207 #ifdef _LKM 208 malloc_type_attach(M_NTFSMNT); 209 malloc_type_attach(M_NTFSNTNODE); 210 malloc_type_attach(M_NTFSFNODE); 211 malloc_type_attach(M_NTFSDIR); 212 malloc_type_attach(M_NTFSNTHASH); 213 malloc_type_attach(M_NTFSNTVATTR); 214 malloc_type_attach(M_NTFSRDATA); 215 malloc_type_attach(M_NTFSDECOMP); 216 malloc_type_attach(M_NTFSRUN); 217 #endif 218 ntfs_nthashinit(); 219 ntfs_toupper_init(); 220 } 221 222 static void 223 ntfs_reinit() 224 { 225 ntfs_nthashreinit(); 226 } 227 228 static void 229 ntfs_done() 230 { 231 ntfs_nthashdone(); 232 #ifdef _LKM 233 malloc_type_detach(M_NTFSMNT); 234 malloc_type_detach(M_NTFSNTNODE); 235 malloc_type_detach(M_NTFSFNODE); 236 malloc_type_detach(M_NTFSDIR); 237 malloc_type_detach(M_NTFSNTHASH); 238 malloc_type_detach(M_NTFSNTVATTR); 239 malloc_type_detach(M_NTFSRDATA); 240 malloc_type_detach(M_NTFSDECOMP); 241 malloc_type_detach(M_NTFSRUN); 242 #endif 243 } 244 245 #elif defined(__FreeBSD__) 246 247 static int 248 ntfs_init ( 249 struct vfsconf *vcp ) 250 { 251 ntfs_nthashinit(); 252 ntfs_toupper_init(); 253 return 0; 254 } 255 256 #endif /* NetBSD */ 257 258 static int 259 ntfs_mount ( 260 struct mount *mp, 261 #if defined(__FreeBSD__) 262 char *path, 263 caddr_t data, 264 #else 265 const char *path, 266 void *data, 267 #endif 268 struct nameidata *ndp, 269 #if defined(__FreeBSD__) 270 struct proc *p ) 271 #else 272 struct lwp *l ) 273 #endif 274 { 275 int err = 0; 276 struct vnode *devvp; 277 struct ntfs_args args; 278 279 #ifdef __FreeBSD__ 280 /* 281 * Use NULL path to flag a root mount 282 */ 283 if( path == NULL) { 284 /* 285 *** 286 * Mounting root file system 287 *** 288 */ 289 290 /* Get vnode for root device*/ 291 if( bdevvp( rootdev, &rootvp)) 292 panic("ffs_mountroot: can't setup bdevvp for root"); 293 294 /* 295 * FS specific handling 296 */ 297 mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/ 298 299 /* 300 * Attempt mount 301 */ 302 if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 303 /* fs specific cleanup (if any)*/ 304 goto error_1; 305 } 306 307 goto dostatfs; /* success*/ 308 309 } 310 #endif /* FreeBSD */ 311 312 if (mp->mnt_flag & MNT_GETARGS) { 313 struct ntfsmount *ntmp = VFSTONTFS(mp); 314 if (ntmp == NULL) 315 return EIO; 316 args.fspec = NULL; 317 args.uid = ntmp->ntm_uid; 318 args.gid = ntmp->ntm_gid; 319 args.mode = ntmp->ntm_mode; 320 args.flag = ntmp->ntm_flag; 321 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 322 return copyout(&args, data, sizeof(args)); 323 } 324 /* 325 *** 326 * Mounting non-root file system or updating a file system 327 *** 328 */ 329 330 /* copy in user arguments*/ 331 err = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args)); 332 if (err) 333 goto error_1; /* can't get arguments*/ 334 335 /* 336 * If updating, check whether changing from read-only to 337 * read/write; if there is no device name, that's all we do. 338 */ 339 if (mp->mnt_flag & MNT_UPDATE) { 340 /* if not updating name...*/ 341 if (args.fspec == 0) { 342 /* 343 * Process export requests. Jumping to "success" 344 * will return the vfs_export() error code. 345 */ 346 struct ntfsmount *ntm = VFSTONTFS(mp); 347 err = vfs_export(mp, &ntm->ntm_export, &args.export); 348 goto success; 349 } 350 351 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 352 err = EINVAL; 353 goto error_1; 354 } 355 356 /* 357 * Not an update, or updating the name: look up the name 358 * and verify that it refers to a sensible block device. 359 */ 360 #ifdef __FreeBSD__ 361 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 362 #else 363 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 364 #endif 365 err = namei(ndp); 366 if (err) { 367 /* can't get devvp!*/ 368 goto error_1; 369 } 370 371 devvp = ndp->ni_vp; 372 373 if (devvp->v_type != VBLK) { 374 err = ENOTBLK; 375 goto error_2; 376 } 377 #ifdef __FreeBSD__ 378 if (bdevsw(devvp->v_rdev) == NULL) { 379 #else 380 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 381 #endif 382 err = ENXIO; 383 goto error_2; 384 } 385 if (mp->mnt_flag & MNT_UPDATE) { 386 #if 0 387 /* 388 ******************** 389 * UPDATE 390 ******************** 391 */ 392 393 if (devvp != ntmp->um_devvp) 394 err = EINVAL; /* needs translation */ 395 else 396 vrele(devvp); 397 /* 398 * Update device name only on success 399 */ 400 if( !err) { 401 err = set_statfs_info(NULL, UIO_USERSPACE, args.fspec, 402 UIO_USERSPACE, mp, p); 403 } 404 #endif 405 } else { 406 /* 407 ******************** 408 * NEW MOUNT 409 ******************** 410 */ 411 412 /* 413 * Since this is a new mount, we want the names for 414 * the device and the mount point copied in. If an 415 * error occurs, the mountpoint is discarded by the 416 * upper level code. 417 */ 418 /* Save "last mounted on" info for mount point (NULL pad)*/ 419 err = set_statfs_info(path, UIO_USERSPACE, args.fspec, 420 UIO_USERSPACE, mp, l); 421 if ( !err) { 422 err = ntfs_mountfs(devvp, mp, &args, l); 423 } 424 } 425 if (err) { 426 goto error_2; 427 } 428 429 #ifdef __FreeBSD__ 430 dostatfs: 431 #endif 432 /* 433 * Initialize FS stat information in mount struct; uses both 434 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 435 * 436 * This code is common to root and non-root mounts 437 */ 438 (void)VFS_STATFS(mp, &mp->mnt_stat, l); 439 440 goto success; 441 442 443 error_2: /* error with devvp held*/ 444 445 /* release devvp before failing*/ 446 vrele(devvp); 447 448 error_1: /* no state to back out*/ 449 450 success: 451 return(err); 452 } 453 454 /* 455 * Common code for mount and mountroot 456 */ 457 int 458 ntfs_mountfs(devvp, mp, argsp, l) 459 struct vnode *devvp; 460 struct mount *mp; 461 struct ntfs_args *argsp; 462 struct lwp *l; 463 { 464 struct buf *bp; 465 struct ntfsmount *ntmp; 466 dev_t dev = devvp->v_rdev; 467 int error, ronly, ncount, i; 468 struct vnode *vp; 469 470 /* 471 * Disallow multiple mounts of the same device. 472 * Disallow mounting of a device that is currently in use 473 * (except for root, which might share swap device for miniroot). 474 * Flush out any old buffers remaining from a previous use. 475 */ 476 error = vfs_mountedon(devvp); 477 if (error) 478 return (error); 479 ncount = vcount(devvp); 480 if (ncount > 1 && devvp != rootvp) 481 return (EBUSY); 482 error = vinvalbuf(devvp, V_SAVE, l->l_proc->p_ucred, l, 0, 0); 483 if (error) 484 return (error); 485 486 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 487 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, l); 488 if (error) 489 return (error); 490 491 bp = NULL; 492 493 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 494 if (error) 495 goto out; 496 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 497 bzero( ntmp, sizeof *ntmp ); 498 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 499 brelse( bp ); 500 bp = NULL; 501 502 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 503 error = EINVAL; 504 dprintf(("ntfs_mountfs: invalid boot block\n")); 505 goto out; 506 } 507 508 { 509 int8_t cpr = ntmp->ntm_mftrecsz; 510 if( cpr > 0 ) 511 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 512 else 513 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 514 } 515 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 516 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 517 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 518 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 519 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 520 521 ntmp->ntm_mountp = mp; 522 ntmp->ntm_dev = dev; 523 ntmp->ntm_devvp = devvp; 524 ntmp->ntm_uid = argsp->uid; 525 ntmp->ntm_gid = argsp->gid; 526 ntmp->ntm_mode = argsp->mode; 527 ntmp->ntm_flag = argsp->flag; 528 mp->mnt_data = ntmp; 529 530 /* set file name encode/decode hooks XXX utf-8 only for now */ 531 ntmp->ntm_wget = ntfs_utf8_wget; 532 ntmp->ntm_wput = ntfs_utf8_wput; 533 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 534 535 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 536 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 537 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 538 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 539 540 /* 541 * We read in some system nodes to do not allow 542 * reclaim them and to have everytime access to them. 543 */ 544 { 545 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 546 for (i=0; i<3; i++) { 547 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]), 548 l); 549 if(error) 550 goto out1; 551 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 552 VREF(ntmp->ntm_sysvn[pi[i]]); 553 vput(ntmp->ntm_sysvn[pi[i]]); 554 } 555 } 556 557 /* read the Unicode lowercase --> uppercase translation table, 558 * if necessary */ 559 if ((error = ntfs_toupper_use(mp, ntmp))) 560 goto out1; 561 562 /* 563 * Scan $BitMap and count free clusters 564 */ 565 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 566 if(error) 567 goto out1; 568 569 /* 570 * Read and translate to internal format attribute 571 * definition file. 572 */ 573 { 574 int num,j; 575 struct attrdef ad; 576 577 /* Open $AttrDef */ 578 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp, l); 579 if(error) 580 goto out1; 581 582 /* Count valid entries */ 583 for(num=0;;num++) { 584 error = ntfs_readattr(ntmp, VTONT(vp), 585 NTFS_A_DATA, NULL, 586 num * sizeof(ad), sizeof(ad), 587 &ad, NULL); 588 if (error) 589 goto out1; 590 if (ad.ad_name[0] == 0) 591 break; 592 } 593 594 /* Alloc memory for attribute definitions */ 595 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 596 num * sizeof(struct ntvattrdef), 597 M_NTFSMNT, M_WAITOK); 598 599 ntmp->ntm_adnum = num; 600 601 /* Read them and translate */ 602 for(i=0;i<num;i++){ 603 error = ntfs_readattr(ntmp, VTONT(vp), 604 NTFS_A_DATA, NULL, 605 i * sizeof(ad), sizeof(ad), 606 &ad, NULL); 607 if (error) 608 goto out1; 609 j = 0; 610 do { 611 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 612 } while(ad.ad_name[j++]); 613 ntmp->ntm_ad[i].ad_namelen = j - 1; 614 ntmp->ntm_ad[i].ad_type = ad.ad_type; 615 } 616 617 vput(vp); 618 } 619 620 #if defined(__FreeBSD__) 621 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 622 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 623 #else 624 mp->mnt_stat.f_fsid.val[0] = dev; 625 mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_NTFS); 626 #endif 627 mp->mnt_maxsymlinklen = 0; 628 mp->mnt_flag |= MNT_LOCAL; 629 devvp->v_specmountpoint = mp; 630 return (0); 631 632 out1: 633 for(i=0;i<NTFS_SYSNODESNUM;i++) 634 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 635 636 if (vflush(mp,NULLVP,0)) 637 dprintf(("ntfs_mountfs: vflush failed\n")); 638 639 out: 640 devvp->v_specmountpoint = NULL; 641 if (bp) 642 brelse(bp); 643 644 /* lock the device vnode before calling VOP_CLOSE() */ 645 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 646 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, l); 647 VOP_UNLOCK(devvp, 0); 648 649 return (error); 650 } 651 652 static int 653 ntfs_start ( 654 struct mount *mp, 655 int flags, 656 struct lwp *l ) 657 { 658 return (0); 659 } 660 661 static int 662 ntfs_unmount( 663 struct mount *mp, 664 int mntflags, 665 struct lwp *l) 666 { 667 struct ntfsmount *ntmp; 668 int error, ronly = 0, flags, i; 669 670 dprintf(("ntfs_unmount: unmounting...\n")); 671 ntmp = VFSTONTFS(mp); 672 673 flags = 0; 674 if(mntflags & MNT_FORCE) 675 flags |= FORCECLOSE; 676 677 dprintf(("ntfs_unmount: vflushing...\n")); 678 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 679 if (error) { 680 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 681 return (error); 682 } 683 684 /* Check if only system vnodes are rest */ 685 for(i=0;i<NTFS_SYSNODESNUM;i++) 686 if((ntmp->ntm_sysvn[i]) && 687 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 688 689 /* Dereference all system vnodes */ 690 for(i=0;i<NTFS_SYSNODESNUM;i++) 691 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 692 693 /* vflush system vnodes */ 694 error = vflush(mp,NULLVP,flags); 695 if (error) { 696 /* XXX should this be panic() ? */ 697 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 698 } 699 700 /* Check if the type of device node isn't VBAD before 701 * touching v_specinfo. If the device vnode is revoked, the 702 * field is NULL and touching it causes null pointer derefercence. 703 */ 704 if (ntmp->ntm_devvp->v_type != VBAD) 705 ntmp->ntm_devvp->v_specmountpoint = NULL; 706 707 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 708 709 /* lock the device vnode before calling VOP_CLOSE() */ 710 VOP_LOCK(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 711 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 712 NOCRED, l); 713 VOP_UNLOCK(ntmp->ntm_devvp, 0); 714 715 vrele(ntmp->ntm_devvp); 716 717 /* free the toupper table, if this has been last mounted ntfs volume */ 718 ntfs_toupper_unuse(); 719 720 dprintf(("ntfs_umount: freeing memory...\n")); 721 mp->mnt_data = NULL; 722 mp->mnt_flag &= ~MNT_LOCAL; 723 free(ntmp->ntm_ad, M_NTFSMNT); 724 FREE(ntmp, M_NTFSMNT); 725 return (error); 726 } 727 728 static int 729 ntfs_root( 730 struct mount *mp, 731 struct vnode **vpp, 732 struct lwp *l) 733 { 734 struct vnode *nvp; 735 int error = 0; 736 737 dprintf(("ntfs_root(): sysvn: %p\n", 738 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 739 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp, l); 740 if(error) { 741 printf("ntfs_root: VFS_VGET failed: %d\n",error); 742 return (error); 743 } 744 745 *vpp = nvp; 746 return (0); 747 } 748 749 static int 750 ntfs_quotactl ( 751 struct mount *mp, 752 int cmds, 753 uid_t uid, 754 caddr_t arg, 755 struct lwp *l) 756 { 757 printf("\nntfs_quotactl():\n"); 758 return EOPNOTSUPP; 759 } 760 761 int 762 ntfs_calccfree( 763 struct ntfsmount *ntmp, 764 cn_t *cfreep) 765 { 766 struct vnode *vp; 767 u_int8_t *tmp; 768 int j, error; 769 long cfree = 0; 770 size_t bmsize, i; 771 772 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 773 774 bmsize = VTOF(vp)->f_size; 775 776 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 777 778 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 779 0, bmsize, tmp, NULL); 780 if (error) 781 goto out; 782 783 for(i=0;i<bmsize;i++) 784 for(j=0;j<8;j++) 785 if(~tmp[i] & (1 << j)) cfree++; 786 *cfreep = cfree; 787 788 out: 789 free(tmp, M_TEMP); 790 return(error); 791 } 792 793 static int 794 ntfs_statfs( 795 struct mount *mp, 796 struct statfs *sbp, 797 struct lwp *l) 798 { 799 struct ntfsmount *ntmp = VFSTONTFS(mp); 800 u_int64_t mftallocated; 801 802 dprintf(("ntfs_statfs():\n")); 803 804 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 805 806 #if defined(__FreeBSD__) 807 sbp->f_type = mp->mnt_vfc->vfc_typenum; 808 #elif defined(__NetBSD__) 809 sbp->f_type = 0; 810 #else 811 sbp->f_type = MOUNT_NTFS; 812 #endif 813 sbp->f_bsize = ntmp->ntm_bps; 814 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 815 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 816 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 817 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec; 818 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 819 sbp->f_ffree; 820 sbp->f_flags = mp->mnt_flag; 821 copy_statfs_info(sbp, mp); 822 return (0); 823 } 824 825 static int 826 ntfs_sync ( 827 struct mount *mp, 828 int waitfor, 829 struct ucred *cred, 830 struct lwp *l) 831 { 832 /*dprintf(("ntfs_sync():\n"));*/ 833 return (0); 834 } 835 836 /*ARGSUSED*/ 837 static int 838 ntfs_fhtovp( 839 #if defined(__FreeBSD__) 840 struct mount *mp, 841 struct fid *fhp, 842 struct sockaddr *nam, 843 struct vnode **vpp, 844 int *exflagsp, 845 struct ucred **credanonp) 846 #elif defined(__NetBSD__) 847 struct mount *mp, 848 struct fid *fhp, 849 struct vnode **vpp, 850 struct lwp *l) 851 #else 852 struct mount *mp, 853 struct fid *fhp, 854 struct mbuf *nam, 855 struct vnode **vpp, 856 int *exflagsp, 857 struct ucred **credanonp) 858 #endif 859 { 860 struct ntfid *ntfhp = (struct ntfid *)fhp; 861 int error; 862 863 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 864 ntfhp->ntfid_ino)); 865 866 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 867 LK_EXCLUSIVE | LK_RETRY, 0, l, vpp); /* XXX */ 868 if (error != 0) { 869 *vpp = NULLVP; 870 return (error); 871 } 872 873 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 874 * with NTFS, we don't need to check anything else for now */ 875 return (0); 876 } 877 878 static int 879 ntfs_vptofh( 880 struct vnode *vp, 881 struct fid *fhp) 882 { 883 struct ntnode *ntp; 884 struct ntfid *ntfhp; 885 struct fnode *fn; 886 887 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 888 vp)); 889 890 fn = VTOF(vp); 891 ntp = VTONT(vp); 892 ntfhp = (struct ntfid *)fhp; 893 ntfhp->ntfid_len = sizeof(struct ntfid); 894 ntfhp->ntfid_ino = ntp->i_number; 895 ntfhp->ntfid_attr = fn->f_attrtype; 896 #ifdef notyet 897 ntfhp->ntfid_gen = ntp->i_gen; 898 #endif 899 return (0); 900 } 901 902 int 903 ntfs_vgetex( 904 struct mount *mp, 905 ino_t ino, 906 u_int32_t attrtype, 907 char *attrname, 908 u_long lkflags, 909 u_long flags, 910 struct lwp *l, 911 struct vnode **vpp) 912 { 913 int error; 914 struct ntfsmount *ntmp; 915 struct ntnode *ip; 916 struct fnode *fp; 917 struct vnode *vp; 918 enum vtype f_type; 919 920 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 921 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 922 (u_long)flags )); 923 924 ntmp = VFSTONTFS(mp); 925 *vpp = NULL; 926 927 /* Get ntnode */ 928 error = ntfs_ntlookup(ntmp, ino, &ip); 929 if (error) { 930 printf("ntfs_vget: ntfs_ntget failed\n"); 931 return (error); 932 } 933 934 /* It may be not initialized fully, so force load it */ 935 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 936 error = ntfs_loadntnode(ntmp, ip); 937 if(error) { 938 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 939 ip->i_number); 940 ntfs_ntput(ip); 941 return (error); 942 } 943 } 944 945 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 946 if (error) { 947 printf("ntfs_vget: ntfs_fget failed\n"); 948 ntfs_ntput(ip); 949 return (error); 950 } 951 952 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 953 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 954 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 955 f_type = VDIR; 956 } else if (flags & VG_EXT) { 957 f_type = VNON; 958 fp->f_size = fp->f_allocated = 0; 959 } else { 960 f_type = VREG; 961 962 error = ntfs_filesize(ntmp, fp, 963 &fp->f_size, &fp->f_allocated); 964 if (error) { 965 ntfs_ntput(ip); 966 return (error); 967 } 968 } 969 970 fp->f_flag |= FN_VALID; 971 } 972 973 /* 974 * We may be calling vget() now. To avoid potential deadlock, we need 975 * to release ntnode lock, since due to locking order vnode 976 * lock has to be acquired first. 977 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 978 * prematurely. 979 */ 980 ntfs_ntput(ip); 981 982 if (FTOV(fp)) { 983 /* vget() returns error if the vnode has been recycled */ 984 if (vget(FTOV(fp), lkflags, l) == 0) { 985 *vpp = FTOV(fp); 986 return (0); 987 } 988 } 989 990 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 991 if(error) { 992 ntfs_frele(fp); 993 ntfs_ntput(ip); 994 return (error); 995 } 996 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 997 998 #ifdef __FreeBSD__ 999 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 1000 #endif 1001 fp->f_vp = vp; 1002 vp->v_data = fp; 1003 vp->v_type = f_type; 1004 1005 if (ino == NTFS_ROOTINO) 1006 vp->v_flag |= VROOT; 1007 1008 if (lkflags & LK_TYPE_MASK) { 1009 error = vn_lock(vp, lkflags); 1010 if (error) { 1011 vput(vp); 1012 return (error); 1013 } 1014 } 1015 1016 genfs_node_init(vp, &ntfs_genfsops); 1017 VREF(ip->i_devvp); 1018 *vpp = vp; 1019 return (0); 1020 } 1021 1022 static int 1023 ntfs_vget( 1024 struct mount *mp, 1025 ino_t ino, 1026 struct vnode **vpp, 1027 struct lwp *l) 1028 { 1029 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 1030 LK_EXCLUSIVE | LK_RETRY, 0, l, vpp); 1031 } 1032 1033 #if defined(__FreeBSD__) 1034 static struct vfsops ntfs_vfsops = { 1035 ntfs_mount, 1036 ntfs_start, 1037 ntfs_unmount, 1038 ntfs_root, 1039 ntfs_quotactl, 1040 ntfs_statfs, 1041 ntfs_sync, 1042 ntfs_vget, 1043 ntfs_fhtovp, 1044 ntfs_vptofh, 1045 ntfs_init, 1046 NULL 1047 }; 1048 VFS_SET(ntfs_vfsops, ntfs, 0); 1049 #elif defined(__NetBSD__) 1050 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1051 1052 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1053 &ntfs_vnodeop_opv_desc, 1054 NULL, 1055 }; 1056 1057 struct vfsops ntfs_vfsops = { 1058 MOUNT_NTFS, 1059 ntfs_mount, 1060 ntfs_start, 1061 ntfs_unmount, 1062 ntfs_root, 1063 ntfs_quotactl, 1064 ntfs_statfs, 1065 ntfs_sync, 1066 ntfs_vget, 1067 ntfs_fhtovp, 1068 ntfs_vptofh, 1069 ntfs_init, 1070 ntfs_reinit, 1071 ntfs_done, 1072 ntfs_sysctl, 1073 ntfs_mountroot, 1074 ntfs_checkexp, 1075 ntfs_vnodeopv_descs, 1076 }; 1077 #endif 1078
Indexes created Thu Sep 25 16:09:42 GMT 2025