ntfs_vfsops.c revision 1.27
1 /* $NetBSD: ntfs_vfsops.c,v 1.27 2005/01/09 03:11:48 mycroft 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 1.27 2005/01/09 03:11:48 mycroft 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/sysctl.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 proc *)); 75 #endif 76 static int ntfs_quotactl __P((struct mount *, int, uid_t, void *, 77 struct proc *)); 78 static int ntfs_root __P((struct mount *, struct vnode **)); 79 static int ntfs_start __P((struct mount *, int, struct proc *)); 80 static int ntfs_statvfs __P((struct mount *, struct statvfs *, 81 struct proc *)); 82 static int ntfs_sync __P((struct mount *, int, struct ucred *, 83 struct proc *)); 84 static int ntfs_unmount __P((struct mount *, int, struct proc *)); 85 static int ntfs_vget __P((struct mount *mp, ino_t ino, 86 struct vnode **vpp)); 87 static int ntfs_mountfs __P((struct vnode *, struct mount *, 88 struct ntfs_args *, struct proc *)); 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 **)); 102 static int ntfs_checkexp __P((struct mount *, struct mbuf *, 103 int *, struct ucred **)); 104 static int ntfs_mountroot __P((void)); 105 #else 106 static int ntfs_init __P((void)); 107 static int ntfs_fhtovp __P((struct mount *, struct fid *, 108 struct mbuf *, struct vnode **, 109 int *, struct ucred **)); 110 #endif 111 112 struct genfs_ops ntfs_genfsops = { 113 NULL, 114 NULL, 115 genfs_compat_gop_write, 116 }; 117 118 #ifdef __NetBSD__ 119 /* 120 * Verify a remote client has export rights and return these rights via. 121 * exflagsp and credanonp. 122 */ 123 static int 124 ntfs_checkexp(mp, nam, exflagsp, credanonp) 125 struct mount *mp; 126 struct mbuf *nam; 127 int *exflagsp; 128 struct ucred **credanonp; 129 { 130 struct netcred *np; 131 struct ntfsmount *ntm = VFSTONTFS(mp); 132 133 /* 134 * Get the export permission structure for this <mp, client> tuple. 135 */ 136 np = vfs_export_lookup(mp, &ntm->ntm_export, nam); 137 if (np == NULL) 138 return (EACCES); 139 140 *exflagsp = np->netc_exflags; 141 *credanonp = &np->netc_anon; 142 return (0); 143 } 144 145 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 146 { 147 148 sysctl_createv(clog, 0, NULL, NULL, 149 CTLFLAG_PERMANENT, 150 CTLTYPE_NODE, "vfs", NULL, 151 NULL, 0, NULL, 0, 152 CTL_VFS, CTL_EOL); 153 sysctl_createv(clog, 0, NULL, NULL, 154 CTLFLAG_PERMANENT, 155 CTLTYPE_NODE, "ntfs", 156 SYSCTL_DESCR("NTFS file system"), 157 NULL, 0, NULL, 0, 158 CTL_VFS, 20, CTL_EOL); 159 /* 160 * XXX the "20" above could be dynamic, thereby eliminating 161 * one more instance of the "number to vfs" mapping problem, 162 * but "20" is the order as taken from sys/mount.h 163 */ 164 } 165 166 static int 167 ntfs_mountroot() 168 { 169 struct mount *mp; 170 struct proc *p = curproc; /* XXX */ 171 int error; 172 struct ntfs_args args; 173 174 if (root_device->dv_class != DV_DISK) 175 return (ENODEV); 176 177 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 178 vrele(rootvp); 179 return (error); 180 } 181 182 args.flag = 0; 183 args.uid = 0; 184 args.gid = 0; 185 args.mode = 0777; 186 187 if ((error = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 188 mp->mnt_op->vfs_refcount--; 189 vfs_unbusy(mp); 190 free(mp, M_MOUNT); 191 return (error); 192 } 193 194 simple_lock(&mountlist_slock); 195 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 196 simple_unlock(&mountlist_slock); 197 (void)ntfs_statvfs(mp, &mp->mnt_stat, p); 198 vfs_unbusy(mp); 199 return (0); 200 } 201 202 static void 203 ntfs_init() 204 { 205 #ifdef _LKM 206 malloc_type_attach(M_NTFSMNT); 207 malloc_type_attach(M_NTFSNTNODE); 208 malloc_type_attach(M_NTFSFNODE); 209 malloc_type_attach(M_NTFSDIR); 210 malloc_type_attach(M_NTFSNTHASH); 211 malloc_type_attach(M_NTFSNTVATTR); 212 malloc_type_attach(M_NTFSRDATA); 213 malloc_type_attach(M_NTFSDECOMP); 214 malloc_type_attach(M_NTFSRUN); 215 #endif 216 ntfs_nthashinit(); 217 ntfs_toupper_init(); 218 } 219 220 static void 221 ntfs_reinit() 222 { 223 ntfs_nthashreinit(); 224 } 225 226 static void 227 ntfs_done() 228 { 229 ntfs_nthashdone(); 230 #ifdef _LKM 231 malloc_type_detach(M_NTFSMNT); 232 malloc_type_detach(M_NTFSNTNODE); 233 malloc_type_detach(M_NTFSFNODE); 234 malloc_type_detach(M_NTFSDIR); 235 malloc_type_detach(M_NTFSNTHASH); 236 malloc_type_detach(M_NTFSNTVATTR); 237 malloc_type_detach(M_NTFSRDATA); 238 malloc_type_detach(M_NTFSDECOMP); 239 malloc_type_detach(M_NTFSRUN); 240 #endif 241 } 242 243 #elif defined(__FreeBSD__) 244 245 static int 246 ntfs_init ( 247 struct vfsconf *vcp ) 248 { 249 ntfs_nthashinit(); 250 ntfs_toupper_init(); 251 return 0; 252 } 253 254 #endif /* NetBSD */ 255 256 static int 257 ntfs_mount ( 258 struct mount *mp, 259 #if defined(__FreeBSD__) 260 char *path, 261 caddr_t data, 262 #else 263 const char *path, 264 void *data, 265 #endif 266 struct nameidata *ndp, 267 struct proc *p ) 268 { 269 int err = 0; 270 struct vnode *devvp; 271 struct ntfs_args args; 272 273 #ifdef __FreeBSD__ 274 /* 275 * Use NULL path to flag a root mount 276 */ 277 if( path == NULL) { 278 /* 279 *** 280 * Mounting root file system 281 *** 282 */ 283 284 /* Get vnode for root device*/ 285 if( bdevvp( rootdev, &rootvp)) 286 panic("ffs_mountroot: can't setup bdevvp for root"); 287 288 /* 289 * FS specific handling 290 */ 291 mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/ 292 293 /* 294 * Attempt mount 295 */ 296 if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 297 /* fs specific cleanup (if any)*/ 298 goto error_1; 299 } 300 301 goto dostatvfs; /* success*/ 302 303 } 304 #endif /* FreeBSD */ 305 306 if (mp->mnt_flag & MNT_GETARGS) { 307 struct ntfsmount *ntmp = VFSTONTFS(mp); 308 if (ntmp == NULL) 309 return EIO; 310 args.fspec = NULL; 311 args.uid = ntmp->ntm_uid; 312 args.gid = ntmp->ntm_gid; 313 args.mode = ntmp->ntm_mode; 314 args.flag = ntmp->ntm_flag; 315 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 316 return copyout(&args, data, sizeof(args)); 317 } 318 /* 319 *** 320 * Mounting non-root file system or updating a file system 321 *** 322 */ 323 324 /* copy in user arguments*/ 325 err = copyin(data, &args, sizeof (struct ntfs_args)); 326 if (err) 327 goto error_1; /* can't get arguments*/ 328 329 /* 330 * If updating, check whether changing from read-only to 331 * read/write; if there is no device name, that's all we do. 332 */ 333 if (mp->mnt_flag & MNT_UPDATE) { 334 /* if not updating name...*/ 335 if (args.fspec == 0) { 336 /* 337 * Process export requests. Jumping to "success" 338 * will return the vfs_export() error code. 339 */ 340 struct ntfsmount *ntm = VFSTONTFS(mp); 341 err = vfs_export(mp, &ntm->ntm_export, &args.export); 342 goto success; 343 } 344 345 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 346 err = EINVAL; 347 goto error_1; 348 } 349 350 /* 351 * Not an update, or updating the name: look up the name 352 * and verify that it refers to a sensible block device. 353 */ 354 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 355 err = namei(ndp); 356 if (err) { 357 /* can't get devvp!*/ 358 goto error_1; 359 } 360 361 devvp = ndp->ni_vp; 362 363 if (devvp->v_type != VBLK) { 364 err = ENOTBLK; 365 goto error_2; 366 } 367 #ifdef __FreeBSD__ 368 if (bdevsw(devvp->v_rdev) == NULL) { 369 #else 370 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 371 #endif 372 err = ENXIO; 373 goto error_2; 374 } 375 if (mp->mnt_flag & MNT_UPDATE) { 376 #if 0 377 /* 378 ******************** 379 * UPDATE 380 ******************** 381 */ 382 383 if (devvp != ntmp->um_devvp) 384 err = EINVAL; /* needs translation */ 385 else 386 vrele(devvp); 387 /* 388 * Update device name only on success 389 */ 390 if( !err) { 391 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 392 UIO_USERSPACE, mp, p); 393 } 394 #endif 395 } else { 396 /* 397 ******************** 398 * NEW MOUNT 399 ******************** 400 */ 401 402 /* 403 * Since this is a new mount, we want the names for 404 * the device and the mount point copied in. If an 405 * error occurs, the mountpoint is discarded by the 406 * upper level code. 407 */ 408 /* Save "last mounted on" info for mount point (NULL pad)*/ 409 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 410 UIO_USERSPACE, mp, p); 411 if ( !err) { 412 err = ntfs_mountfs(devvp, mp, &args, p); 413 } 414 } 415 if (err) { 416 goto error_2; 417 } 418 419 #ifdef __FreeBSD__ 420 dostatvfs: 421 #endif 422 /* 423 * Initialize FS stat information in mount struct; uses both 424 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 425 * 426 * This code is common to root and non-root mounts 427 */ 428 (void)VFS_STATVFS(mp, &mp->mnt_stat, p); 429 430 goto success; 431 432 433 error_2: /* error with devvp held*/ 434 435 /* release devvp before failing*/ 436 vrele(devvp); 437 438 error_1: /* no state to back out*/ 439 440 success: 441 return(err); 442 } 443 444 /* 445 * Common code for mount and mountroot 446 */ 447 int 448 ntfs_mountfs(devvp, mp, argsp, p) 449 struct vnode *devvp; 450 struct mount *mp; 451 struct ntfs_args *argsp; 452 struct proc *p; 453 { 454 struct buf *bp; 455 struct ntfsmount *ntmp; 456 dev_t dev = devvp->v_rdev; 457 int error, ronly, ncount, i; 458 struct vnode *vp; 459 460 /* 461 * Disallow multiple mounts of the same device. 462 * Disallow mounting of a device that is currently in use 463 * (except for root, which might share swap device for miniroot). 464 * Flush out any old buffers remaining from a previous use. 465 */ 466 error = vfs_mountedon(devvp); 467 if (error) 468 return (error); 469 ncount = vcount(devvp); 470 if (ncount > 1 && devvp != rootvp) 471 return (EBUSY); 472 error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); 473 if (error) 474 return (error); 475 476 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 477 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p); 478 if (error) 479 return (error); 480 481 bp = NULL; 482 483 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 484 if (error) 485 goto out; 486 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 487 bzero( ntmp, sizeof *ntmp ); 488 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 489 brelse( bp ); 490 bp = NULL; 491 492 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 493 error = EINVAL; 494 dprintf(("ntfs_mountfs: invalid boot block\n")); 495 goto out; 496 } 497 498 { 499 int8_t cpr = ntmp->ntm_mftrecsz; 500 if( cpr > 0 ) 501 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 502 else 503 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 504 } 505 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 506 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 507 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 508 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 509 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 510 511 ntmp->ntm_mountp = mp; 512 ntmp->ntm_dev = dev; 513 ntmp->ntm_devvp = devvp; 514 ntmp->ntm_uid = argsp->uid; 515 ntmp->ntm_gid = argsp->gid; 516 ntmp->ntm_mode = argsp->mode; 517 ntmp->ntm_flag = argsp->flag; 518 mp->mnt_data = ntmp; 519 520 /* set file name encode/decode hooks XXX utf-8 only for now */ 521 ntmp->ntm_wget = ntfs_utf8_wget; 522 ntmp->ntm_wput = ntfs_utf8_wput; 523 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 524 525 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 526 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 527 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 528 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 529 530 /* 531 * We read in some system nodes to do not allow 532 * reclaim them and to have everytime access to them. 533 */ 534 { 535 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 536 for (i=0; i<3; i++) { 537 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 538 if(error) 539 goto out1; 540 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 541 VREF(ntmp->ntm_sysvn[pi[i]]); 542 vput(ntmp->ntm_sysvn[pi[i]]); 543 } 544 } 545 546 /* read the Unicode lowercase --> uppercase translation table, 547 * if necessary */ 548 if ((error = ntfs_toupper_use(mp, ntmp))) 549 goto out1; 550 551 /* 552 * Scan $BitMap and count free clusters 553 */ 554 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 555 if(error) 556 goto out1; 557 558 /* 559 * Read and translate to internal format attribute 560 * definition file. 561 */ 562 { 563 int num,j; 564 struct attrdef ad; 565 566 /* Open $AttrDef */ 567 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 568 if(error) 569 goto out1; 570 571 /* Count valid entries */ 572 for(num=0;;num++) { 573 error = ntfs_readattr(ntmp, VTONT(vp), 574 NTFS_A_DATA, NULL, 575 num * sizeof(ad), sizeof(ad), 576 &ad, NULL); 577 if (error) 578 goto out1; 579 if (ad.ad_name[0] == 0) 580 break; 581 } 582 583 /* Alloc memory for attribute definitions */ 584 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 585 num * sizeof(struct ntvattrdef), 586 M_NTFSMNT, M_WAITOK); 587 588 ntmp->ntm_adnum = num; 589 590 /* Read them and translate */ 591 for(i=0;i<num;i++){ 592 error = ntfs_readattr(ntmp, VTONT(vp), 593 NTFS_A_DATA, NULL, 594 i * sizeof(ad), sizeof(ad), 595 &ad, NULL); 596 if (error) 597 goto out1; 598 j = 0; 599 do { 600 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 601 } while(ad.ad_name[j++]); 602 ntmp->ntm_ad[i].ad_namelen = j - 1; 603 ntmp->ntm_ad[i].ad_type = ad.ad_type; 604 } 605 606 vput(vp); 607 } 608 609 #if defined(__FreeBSD__) 610 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 611 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 612 #else 613 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 614 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 615 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 616 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 617 #endif 618 mp->mnt_flag |= MNT_LOCAL; 619 devvp->v_specmountpoint = mp; 620 return (0); 621 622 out1: 623 for(i=0;i<NTFS_SYSNODESNUM;i++) 624 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 625 626 if (vflush(mp,NULLVP,0)) 627 dprintf(("ntfs_mountfs: vflush failed\n")); 628 629 out: 630 devvp->v_specmountpoint = NULL; 631 if (bp) 632 brelse(bp); 633 634 /* lock the device vnode before calling VOP_CLOSE() */ 635 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 636 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); 637 VOP_UNLOCK(devvp, 0); 638 639 return (error); 640 } 641 642 static int 643 ntfs_start ( 644 struct mount *mp, 645 int flags, 646 struct proc *p ) 647 { 648 return (0); 649 } 650 651 static int 652 ntfs_unmount( 653 struct mount *mp, 654 int mntflags, 655 struct proc *p) 656 { 657 struct ntfsmount *ntmp; 658 int error, ronly = 0, flags, i; 659 660 dprintf(("ntfs_unmount: unmounting...\n")); 661 ntmp = VFSTONTFS(mp); 662 663 flags = 0; 664 if(mntflags & MNT_FORCE) 665 flags |= FORCECLOSE; 666 667 dprintf(("ntfs_unmount: vflushing...\n")); 668 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 669 if (error) { 670 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 671 return (error); 672 } 673 674 /* Check if only system vnodes are rest */ 675 for(i=0;i<NTFS_SYSNODESNUM;i++) 676 if((ntmp->ntm_sysvn[i]) && 677 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 678 679 /* Dereference all system vnodes */ 680 for(i=0;i<NTFS_SYSNODESNUM;i++) 681 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 682 683 /* vflush system vnodes */ 684 error = vflush(mp,NULLVP,flags); 685 if (error) { 686 /* XXX should this be panic() ? */ 687 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 688 } 689 690 /* Check if the type of device node isn't VBAD before 691 * touching v_specinfo. If the device vnode is revoked, the 692 * field is NULL and touching it causes null pointer derefercence. 693 */ 694 if (ntmp->ntm_devvp->v_type != VBAD) 695 ntmp->ntm_devvp->v_specmountpoint = NULL; 696 697 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0); 698 699 /* lock the device vnode before calling VOP_CLOSE() */ 700 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 701 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 702 NOCRED, p); 703 VOP_UNLOCK(ntmp->ntm_devvp, 0); 704 705 vrele(ntmp->ntm_devvp); 706 707 /* free the toupper table, if this has been last mounted ntfs volume */ 708 ntfs_toupper_unuse(); 709 710 dprintf(("ntfs_umount: freeing memory...\n")); 711 mp->mnt_data = NULL; 712 mp->mnt_flag &= ~MNT_LOCAL; 713 free(ntmp->ntm_ad, M_NTFSMNT); 714 FREE(ntmp, M_NTFSMNT); 715 return (error); 716 } 717 718 static int 719 ntfs_root( 720 struct mount *mp, 721 struct vnode **vpp ) 722 { 723 struct vnode *nvp; 724 int error = 0; 725 726 dprintf(("ntfs_root(): sysvn: %p\n", 727 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 728 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 729 if(error) { 730 printf("ntfs_root: VFS_VGET failed: %d\n",error); 731 return (error); 732 } 733 734 *vpp = nvp; 735 return (0); 736 } 737 738 /* 739 * Do operations associated with quotas, not supported 740 */ 741 /* ARGSUSED */ 742 static int 743 ntfs_quotactl ( 744 struct mount *mp, 745 int cmds, 746 uid_t uid, 747 void *arg, 748 struct proc *p) 749 { 750 751 return EOPNOTSUPP; 752 } 753 754 int 755 ntfs_calccfree( 756 struct ntfsmount *ntmp, 757 cn_t *cfreep) 758 { 759 struct vnode *vp; 760 u_int8_t *tmp; 761 int j, error; 762 cn_t cfree = 0; 763 size_t bmsize, i; 764 765 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 766 767 bmsize = VTOF(vp)->f_size; 768 769 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 770 771 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 772 0, bmsize, tmp, NULL); 773 if (error) 774 goto out; 775 776 for(i=0;i<bmsize;i++) 777 for(j=0;j<8;j++) 778 if(~tmp[i] & (1 << j)) cfree++; 779 *cfreep = cfree; 780 781 out: 782 free(tmp, M_TEMP); 783 return(error); 784 } 785 786 static int 787 ntfs_statvfs( 788 struct mount *mp, 789 struct statvfs *sbp, 790 struct proc *p) 791 { 792 struct ntfsmount *ntmp = VFSTONTFS(mp); 793 u_int64_t mftallocated; 794 795 dprintf(("ntfs_statvfs():\n")); 796 797 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 798 799 #if defined(__FreeBSD__) 800 sbp->f_type = mp->mnt_vfc->vfc_typenum; 801 #endif 802 sbp->f_bsize = ntmp->ntm_bps; 803 sbp->f_frsize = sbp->f_bsize; /* XXX */ 804 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 805 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 806 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 807 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 808 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 809 sbp->f_ffree; 810 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 811 sbp->f_flag = mp->mnt_flag; 812 copy_statvfs_info(sbp, mp); 813 return (0); 814 } 815 816 static int 817 ntfs_sync ( 818 struct mount *mp, 819 int waitfor, 820 struct ucred *cred, 821 struct proc *p) 822 { 823 /*dprintf(("ntfs_sync():\n"));*/ 824 return (0); 825 } 826 827 /*ARGSUSED*/ 828 static int 829 ntfs_fhtovp( 830 #if defined(__FreeBSD__) 831 struct mount *mp, 832 struct fid *fhp, 833 struct sockaddr *nam, 834 struct vnode **vpp, 835 int *exflagsp, 836 struct ucred **credanonp) 837 #elif defined(__NetBSD__) 838 struct mount *mp, 839 struct fid *fhp, 840 struct vnode **vpp) 841 #else 842 struct mount *mp, 843 struct fid *fhp, 844 struct mbuf *nam, 845 struct vnode **vpp, 846 int *exflagsp, 847 struct ucred **credanonp) 848 #endif 849 { 850 struct ntfid *ntfhp = (struct ntfid *)fhp; 851 int error; 852 853 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 854 ntfhp->ntfid_ino)); 855 856 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 857 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 858 if (error != 0) { 859 *vpp = NULLVP; 860 return (error); 861 } 862 863 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 864 * with NTFS, we don't need to check anything else for now */ 865 return (0); 866 } 867 868 static int 869 ntfs_vptofh( 870 struct vnode *vp, 871 struct fid *fhp) 872 { 873 struct ntnode *ntp; 874 struct ntfid *ntfhp; 875 struct fnode *fn; 876 877 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 878 vp)); 879 880 fn = VTOF(vp); 881 ntp = VTONT(vp); 882 ntfhp = (struct ntfid *)fhp; 883 ntfhp->ntfid_len = sizeof(struct ntfid); 884 ntfhp->ntfid_ino = ntp->i_number; 885 ntfhp->ntfid_attr = fn->f_attrtype; 886 #ifdef notyet 887 ntfhp->ntfid_gen = ntp->i_gen; 888 #endif 889 return (0); 890 } 891 892 int 893 ntfs_vgetex( 894 struct mount *mp, 895 ino_t ino, 896 u_int32_t attrtype, 897 char *attrname, 898 u_long lkflags, 899 u_long flags, 900 struct proc *p, 901 struct vnode **vpp) 902 { 903 int error; 904 struct ntfsmount *ntmp; 905 struct ntnode *ip; 906 struct fnode *fp; 907 struct vnode *vp; 908 enum vtype f_type = VBAD; 909 910 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 911 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 912 (u_long)flags )); 913 914 ntmp = VFSTONTFS(mp); 915 *vpp = NULL; 916 917 /* Get ntnode */ 918 error = ntfs_ntlookup(ntmp, ino, &ip); 919 if (error) { 920 printf("ntfs_vget: ntfs_ntget failed\n"); 921 return (error); 922 } 923 924 /* It may be not initialized fully, so force load it */ 925 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 926 error = ntfs_loadntnode(ntmp, ip); 927 if(error) { 928 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 929 ip->i_number); 930 ntfs_ntput(ip); 931 return (error); 932 } 933 } 934 935 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 936 if (error) { 937 printf("ntfs_vget: ntfs_fget failed\n"); 938 ntfs_ntput(ip); 939 return (error); 940 } 941 942 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 943 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 944 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 945 f_type = VDIR; 946 } else if (flags & VG_EXT) { 947 f_type = VNON; 948 fp->f_size = fp->f_allocated = 0; 949 } else { 950 f_type = VREG; 951 952 error = ntfs_filesize(ntmp, fp, 953 &fp->f_size, &fp->f_allocated); 954 if (error) { 955 ntfs_ntput(ip); 956 return (error); 957 } 958 } 959 960 fp->f_flag |= FN_VALID; 961 } 962 963 /* 964 * We may be calling vget() now. To avoid potential deadlock, we need 965 * to release ntnode lock, since due to locking order vnode 966 * lock has to be acquired first. 967 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 968 * prematurely. 969 */ 970 ntfs_ntput(ip); 971 972 if (FTOV(fp)) { 973 /* vget() returns error if the vnode has been recycled */ 974 if (vget(FTOV(fp), lkflags) == 0) { 975 *vpp = FTOV(fp); 976 return (0); 977 } 978 } 979 980 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 981 if(error) { 982 ntfs_frele(fp); 983 ntfs_ntput(ip); 984 return (error); 985 } 986 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 987 988 #ifdef __FreeBSD__ 989 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 990 #endif 991 fp->f_vp = vp; 992 vp->v_data = fp; 993 if (f_type != VBAD) 994 vp->v_type = f_type; 995 996 if (ino == NTFS_ROOTINO) 997 vp->v_flag |= VROOT; 998 999 if (lkflags & LK_TYPE_MASK) { 1000 error = vn_lock(vp, lkflags); 1001 if (error) { 1002 vput(vp); 1003 return (error); 1004 } 1005 } 1006 1007 genfs_node_init(vp, &ntfs_genfsops); 1008 VREF(ip->i_devvp); 1009 *vpp = vp; 1010 return (0); 1011 } 1012 1013 static int 1014 ntfs_vget( 1015 struct mount *mp, 1016 ino_t ino, 1017 struct vnode **vpp) 1018 { 1019 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 1020 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 1021 } 1022 1023 #if defined(__FreeBSD__) 1024 static struct vfsops ntfs_vfsops = { 1025 ntfs_mount, 1026 ntfs_start, 1027 ntfs_unmount, 1028 ntfs_root, 1029 ntfs_quotactl, 1030 ntfs_statvfs, 1031 ntfs_sync, 1032 ntfs_vget, 1033 ntfs_fhtovp, 1034 ntfs_vptofh, 1035 ntfs_init, 1036 NULL 1037 }; 1038 VFS_SET(ntfs_vfsops, ntfs, 0); 1039 #elif defined(__NetBSD__) 1040 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1041 1042 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1043 &ntfs_vnodeop_opv_desc, 1044 NULL, 1045 }; 1046 1047 struct vfsops ntfs_vfsops = { 1048 MOUNT_NTFS, 1049 ntfs_mount, 1050 ntfs_start, 1051 ntfs_unmount, 1052 ntfs_root, 1053 ntfs_quotactl, 1054 ntfs_statvfs, 1055 ntfs_sync, 1056 ntfs_vget, 1057 ntfs_fhtovp, 1058 ntfs_vptofh, 1059 ntfs_init, 1060 ntfs_reinit, 1061 ntfs_done, 1062 NULL, 1063 ntfs_mountroot, 1064 ntfs_checkexp, 1065 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1066 vfs_stdextattrctl, 1067 ntfs_vnodeopv_descs, 1068 }; 1069 #endif 1070
Indexes created Wed Oct 01 19:09:53 GMT 2025