ntfs_vfsops.c revision 1.10.2.3
1 /* $NetBSD: ntfs_vfsops.c,v 1.10.2.3 2004/08/24 17:57:37 skrll 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 1.10.2.3 2004/08/24 17:57:37 skrll 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 lwp *)); 75 #endif 76 static int ntfs_quotactl __P((struct mount *, int, uid_t, void *, 77 struct lwp *)); 78 static int ntfs_root __P((struct mount *, struct vnode **)); 79 static int ntfs_start __P((struct mount *, int, struct lwp *)); 80 static int ntfs_statvfs __P((struct mount *, struct statvfs *, 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)); 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 **)); 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 lwp *l = curlwp; /* XXX */ 171 int error; 172 struct ntfs_args args; 173 174 if (root_device->dv_class != DV_DISK) 175 return (ENODEV); 176 177 /* 178 * Get vnodes for rootdev. 179 */ 180 if (bdevvp(rootdev, &rootvp)) 181 panic("ntfs_mountroot: can't setup rootvp"); 182 183 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 184 vrele(rootvp); 185 return (error); 186 } 187 188 args.flag = 0; 189 args.uid = 0; 190 args.gid = 0; 191 args.mode = 0777; 192 193 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 194 mp->mnt_op->vfs_refcount--; 195 vfs_unbusy(mp); 196 free(mp, M_MOUNT); 197 vrele(rootvp); 198 return (error); 199 } 200 201 simple_lock(&mountlist_slock); 202 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 203 simple_unlock(&mountlist_slock); 204 (void)ntfs_statvfs(mp, &mp->mnt_stat, l); 205 vfs_unbusy(mp); 206 return (0); 207 } 208 209 static void 210 ntfs_init() 211 { 212 #ifdef _LKM 213 malloc_type_attach(M_NTFSMNT); 214 malloc_type_attach(M_NTFSNTNODE); 215 malloc_type_attach(M_NTFSFNODE); 216 malloc_type_attach(M_NTFSDIR); 217 malloc_type_attach(M_NTFSNTHASH); 218 malloc_type_attach(M_NTFSNTVATTR); 219 malloc_type_attach(M_NTFSRDATA); 220 malloc_type_attach(M_NTFSDECOMP); 221 malloc_type_attach(M_NTFSRUN); 222 #endif 223 ntfs_nthashinit(); 224 ntfs_toupper_init(); 225 } 226 227 static void 228 ntfs_reinit() 229 { 230 ntfs_nthashreinit(); 231 } 232 233 static void 234 ntfs_done() 235 { 236 ntfs_nthashdone(); 237 #ifdef _LKM 238 malloc_type_detach(M_NTFSMNT); 239 malloc_type_detach(M_NTFSNTNODE); 240 malloc_type_detach(M_NTFSFNODE); 241 malloc_type_detach(M_NTFSDIR); 242 malloc_type_detach(M_NTFSNTHASH); 243 malloc_type_detach(M_NTFSNTVATTR); 244 malloc_type_detach(M_NTFSRDATA); 245 malloc_type_detach(M_NTFSDECOMP); 246 malloc_type_detach(M_NTFSRUN); 247 #endif 248 } 249 250 #elif defined(__FreeBSD__) 251 252 static int 253 ntfs_init ( 254 struct vfsconf *vcp ) 255 { 256 ntfs_nthashinit(); 257 ntfs_toupper_init(); 258 return 0; 259 } 260 261 #endif /* NetBSD */ 262 263 static int 264 ntfs_mount ( 265 struct mount *mp, 266 #if defined(__FreeBSD__) 267 char *path, 268 caddr_t data, 269 #else 270 const char *path, 271 void *data, 272 #endif 273 struct nameidata *ndp, 274 #if defined(__FreeBSD__) 275 struct proc *p ) 276 #else 277 struct lwp *l ) 278 #endif 279 { 280 int err = 0; 281 struct vnode *devvp; 282 struct ntfs_args args; 283 284 #ifdef __FreeBSD__ 285 /* 286 * Use NULL path to flag a root mount 287 */ 288 if( path == NULL) { 289 /* 290 *** 291 * Mounting root file system 292 *** 293 */ 294 295 /* Get vnode for root device*/ 296 if( bdevvp( rootdev, &rootvp)) 297 panic("ffs_mountroot: can't setup bdevvp for root"); 298 299 /* 300 * FS specific handling 301 */ 302 mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/ 303 304 /* 305 * Attempt mount 306 */ 307 if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 308 /* fs specific cleanup (if any)*/ 309 goto error_1; 310 } 311 312 goto dostatvfs; /* success*/ 313 314 } 315 #endif /* FreeBSD */ 316 317 if (mp->mnt_flag & MNT_GETARGS) { 318 struct ntfsmount *ntmp = VFSTONTFS(mp); 319 if (ntmp == NULL) 320 return EIO; 321 args.fspec = NULL; 322 args.uid = ntmp->ntm_uid; 323 args.gid = ntmp->ntm_gid; 324 args.mode = ntmp->ntm_mode; 325 args.flag = ntmp->ntm_flag; 326 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 327 return copyout(&args, data, sizeof(args)); 328 } 329 /* 330 *** 331 * Mounting non-root file system or updating a file system 332 *** 333 */ 334 335 /* copy in user arguments*/ 336 err = copyin(data, &args, sizeof (struct ntfs_args)); 337 if (err) 338 goto error_1; /* can't get arguments*/ 339 340 /* 341 * If updating, check whether changing from read-only to 342 * read/write; if there is no device name, that's all we do. 343 */ 344 if (mp->mnt_flag & MNT_UPDATE) { 345 /* if not updating name...*/ 346 if (args.fspec == 0) { 347 /* 348 * Process export requests. Jumping to "success" 349 * will return the vfs_export() error code. 350 */ 351 struct ntfsmount *ntm = VFSTONTFS(mp); 352 err = vfs_export(mp, &ntm->ntm_export, &args.export); 353 goto success; 354 } 355 356 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 357 err = EINVAL; 358 goto error_1; 359 } 360 361 /* 362 * Not an update, or updating the name: look up the name 363 * and verify that it refers to a sensible block device. 364 */ 365 #ifdef __FreeBSD__ 366 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 367 #else 368 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 369 #endif 370 err = namei(ndp); 371 if (err) { 372 /* can't get devvp!*/ 373 goto error_1; 374 } 375 376 devvp = ndp->ni_vp; 377 378 if (devvp->v_type != VBLK) { 379 err = ENOTBLK; 380 goto error_2; 381 } 382 #ifdef __FreeBSD__ 383 if (bdevsw(devvp->v_rdev) == NULL) { 384 #else 385 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 386 #endif 387 err = ENXIO; 388 goto error_2; 389 } 390 if (mp->mnt_flag & MNT_UPDATE) { 391 #if 0 392 /* 393 ******************** 394 * UPDATE 395 ******************** 396 */ 397 398 if (devvp != ntmp->um_devvp) 399 err = EINVAL; /* needs translation */ 400 else 401 vrele(devvp); 402 /* 403 * Update device name only on success 404 */ 405 if( !err) { 406 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 407 UIO_USERSPACE, mp, p); 408 } 409 #endif 410 } else { 411 /* 412 ******************** 413 * NEW MOUNT 414 ******************** 415 */ 416 417 /* 418 * Since this is a new mount, we want the names for 419 * the device and the mount point copied in. If an 420 * error occurs, the mountpoint is discarded by the 421 * upper level code. 422 */ 423 /* Save "last mounted on" info for mount point (NULL pad)*/ 424 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 425 UIO_USERSPACE, mp, l); 426 if ( !err) { 427 err = ntfs_mountfs(devvp, mp, &args, l); 428 } 429 } 430 if (err) { 431 goto error_2; 432 } 433 434 #ifdef __FreeBSD__ 435 dostatvfs: 436 #endif 437 /* 438 * Initialize FS stat information in mount struct; uses both 439 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 440 * 441 * This code is common to root and non-root mounts 442 */ 443 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 444 445 goto success; 446 447 448 error_2: /* error with devvp held*/ 449 450 /* release devvp before failing*/ 451 vrele(devvp); 452 453 error_1: /* no state to back out*/ 454 455 success: 456 return(err); 457 } 458 459 /* 460 * Common code for mount and mountroot 461 */ 462 int 463 ntfs_mountfs(devvp, mp, argsp, l) 464 struct vnode *devvp; 465 struct mount *mp; 466 struct ntfs_args *argsp; 467 struct lwp *l; 468 { 469 struct buf *bp; 470 struct ntfsmount *ntmp; 471 dev_t dev = devvp->v_rdev; 472 int error, ronly, ncount, i; 473 struct vnode *vp; 474 475 /* 476 * Disallow multiple mounts of the same device. 477 * Disallow mounting of a device that is currently in use 478 * (except for root, which might share swap device for miniroot). 479 * Flush out any old buffers remaining from a previous use. 480 */ 481 error = vfs_mountedon(devvp); 482 if (error) 483 return (error); 484 ncount = vcount(devvp); 485 if (ncount > 1 && devvp != rootvp) 486 return (EBUSY); 487 error = vinvalbuf(devvp, V_SAVE, l->l_proc->p_ucred, l, 0, 0); 488 if (error) 489 return (error); 490 491 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 492 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, l); 493 if (error) 494 return (error); 495 496 bp = NULL; 497 498 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 499 if (error) 500 goto out; 501 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 502 bzero( ntmp, sizeof *ntmp ); 503 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 504 brelse( bp ); 505 bp = NULL; 506 507 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 508 error = EINVAL; 509 dprintf(("ntfs_mountfs: invalid boot block\n")); 510 goto out; 511 } 512 513 { 514 int8_t cpr = ntmp->ntm_mftrecsz; 515 if( cpr > 0 ) 516 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 517 else 518 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 519 } 520 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 521 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 522 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 523 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 524 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 525 526 ntmp->ntm_mountp = mp; 527 ntmp->ntm_dev = dev; 528 ntmp->ntm_devvp = devvp; 529 ntmp->ntm_uid = argsp->uid; 530 ntmp->ntm_gid = argsp->gid; 531 ntmp->ntm_mode = argsp->mode; 532 ntmp->ntm_flag = argsp->flag; 533 mp->mnt_data = ntmp; 534 535 /* set file name encode/decode hooks XXX utf-8 only for now */ 536 ntmp->ntm_wget = ntfs_utf8_wget; 537 ntmp->ntm_wput = ntfs_utf8_wput; 538 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 539 540 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 541 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 542 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 543 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 544 545 /* 546 * We read in some system nodes to do not allow 547 * reclaim them and to have everytime access to them. 548 */ 549 { 550 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 551 for (i=0; i<3; i++) { 552 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 553 if(error) 554 goto out1; 555 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 556 VREF(ntmp->ntm_sysvn[pi[i]]); 557 vput(ntmp->ntm_sysvn[pi[i]]); 558 } 559 } 560 561 /* read the Unicode lowercase --> uppercase translation table, 562 * if necessary */ 563 if ((error = ntfs_toupper_use(mp, ntmp))) 564 goto out1; 565 566 /* 567 * Scan $BitMap and count free clusters 568 */ 569 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 570 if(error) 571 goto out1; 572 573 /* 574 * Read and translate to internal format attribute 575 * definition file. 576 */ 577 { 578 int num,j; 579 struct attrdef ad; 580 581 /* Open $AttrDef */ 582 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp); 583 if(error) 584 goto out1; 585 586 /* Count valid entries */ 587 for(num=0;;num++) { 588 error = ntfs_readattr(ntmp, VTONT(vp), 589 NTFS_A_DATA, NULL, 590 num * sizeof(ad), sizeof(ad), 591 &ad, NULL); 592 if (error) 593 goto out1; 594 if (ad.ad_name[0] == 0) 595 break; 596 } 597 598 /* Alloc memory for attribute definitions */ 599 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 600 num * sizeof(struct ntvattrdef), 601 M_NTFSMNT, M_WAITOK); 602 603 ntmp->ntm_adnum = num; 604 605 /* Read them and translate */ 606 for(i=0;i<num;i++){ 607 error = ntfs_readattr(ntmp, VTONT(vp), 608 NTFS_A_DATA, NULL, 609 i * sizeof(ad), sizeof(ad), 610 &ad, NULL); 611 if (error) 612 goto out1; 613 j = 0; 614 do { 615 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 616 } while(ad.ad_name[j++]); 617 ntmp->ntm_ad[i].ad_namelen = j - 1; 618 ntmp->ntm_ad[i].ad_type = ad.ad_type; 619 } 620 621 vput(vp); 622 } 623 624 #if defined(__FreeBSD__) 625 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 626 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 627 #else 628 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 629 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 630 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 631 #endif 632 mp->mnt_maxsymlinklen = 0; 633 mp->mnt_flag |= MNT_LOCAL; 634 devvp->v_specmountpoint = mp; 635 return (0); 636 637 out1: 638 for(i=0;i<NTFS_SYSNODESNUM;i++) 639 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 640 641 if (vflush(mp,NULLVP,0)) 642 dprintf(("ntfs_mountfs: vflush failed\n")); 643 644 out: 645 devvp->v_specmountpoint = NULL; 646 if (bp) 647 brelse(bp); 648 649 /* lock the device vnode before calling VOP_CLOSE() */ 650 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 651 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, l); 652 VOP_UNLOCK(devvp, 0); 653 654 return (error); 655 } 656 657 static int 658 ntfs_start ( 659 struct mount *mp, 660 int flags, 661 struct lwp *l ) 662 { 663 return (0); 664 } 665 666 static int 667 ntfs_unmount( 668 struct mount *mp, 669 int mntflags, 670 struct lwp *l) 671 { 672 struct ntfsmount *ntmp; 673 int error, ronly = 0, flags, i; 674 675 dprintf(("ntfs_unmount: unmounting...\n")); 676 ntmp = VFSTONTFS(mp); 677 678 flags = 0; 679 if(mntflags & MNT_FORCE) 680 flags |= FORCECLOSE; 681 682 dprintf(("ntfs_unmount: vflushing...\n")); 683 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 684 if (error) { 685 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 686 return (error); 687 } 688 689 /* Check if only system vnodes are rest */ 690 for(i=0;i<NTFS_SYSNODESNUM;i++) 691 if((ntmp->ntm_sysvn[i]) && 692 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 693 694 /* Dereference all system vnodes */ 695 for(i=0;i<NTFS_SYSNODESNUM;i++) 696 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 697 698 /* vflush system vnodes */ 699 error = vflush(mp,NULLVP,flags); 700 if (error) { 701 /* XXX should this be panic() ? */ 702 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 703 } 704 705 /* Check if the type of device node isn't VBAD before 706 * touching v_specinfo. If the device vnode is revoked, the 707 * field is NULL and touching it causes null pointer derefercence. 708 */ 709 if (ntmp->ntm_devvp->v_type != VBAD) 710 ntmp->ntm_devvp->v_specmountpoint = NULL; 711 712 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 713 714 /* lock the device vnode before calling VOP_CLOSE() */ 715 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 716 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 717 NOCRED, l); 718 VOP_UNLOCK(ntmp->ntm_devvp, 0); 719 720 vrele(ntmp->ntm_devvp); 721 722 /* free the toupper table, if this has been last mounted ntfs volume */ 723 ntfs_toupper_unuse(); 724 725 dprintf(("ntfs_umount: freeing memory...\n")); 726 mp->mnt_data = NULL; 727 mp->mnt_flag &= ~MNT_LOCAL; 728 free(ntmp->ntm_ad, M_NTFSMNT); 729 FREE(ntmp, M_NTFSMNT); 730 return (error); 731 } 732 733 static int 734 ntfs_root( 735 struct mount *mp, 736 struct vnode **vpp) 737 { 738 struct vnode *nvp; 739 int error = 0; 740 741 dprintf(("ntfs_root(): sysvn: %p\n", 742 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 743 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 744 if(error) { 745 printf("ntfs_root: VFS_VGET failed: %d\n",error); 746 return (error); 747 } 748 749 *vpp = nvp; 750 return (0); 751 } 752 753 /* 754 * Do operations associated with quotas, not supported 755 */ 756 /* ARGSUSED */ 757 static int 758 ntfs_quotactl ( 759 struct mount *mp, 760 int cmds, 761 uid_t uid, 762 void *arg, 763 struct lwp *l) 764 { 765 766 return EOPNOTSUPP; 767 } 768 769 int 770 ntfs_calccfree( 771 struct ntfsmount *ntmp, 772 cn_t *cfreep) 773 { 774 struct vnode *vp; 775 u_int8_t *tmp; 776 int j, error; 777 cn_t cfree = 0; 778 size_t bmsize, i; 779 780 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 781 782 bmsize = VTOF(vp)->f_size; 783 784 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 785 786 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 787 0, bmsize, tmp, NULL); 788 if (error) 789 goto out; 790 791 for(i=0;i<bmsize;i++) 792 for(j=0;j<8;j++) 793 if(~tmp[i] & (1 << j)) cfree++; 794 *cfreep = cfree; 795 796 out: 797 free(tmp, M_TEMP); 798 return(error); 799 } 800 801 static int 802 ntfs_statvfs( 803 struct mount *mp, 804 struct statvfs *sbp, 805 struct lwp *l) 806 { 807 struct ntfsmount *ntmp = VFSTONTFS(mp); 808 u_int64_t mftallocated; 809 810 dprintf(("ntfs_statvfs():\n")); 811 812 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 813 814 #if defined(__FreeBSD__) 815 sbp->f_type = mp->mnt_vfc->vfc_typenum; 816 #endif 817 sbp->f_bsize = ntmp->ntm_bps; 818 sbp->f_frsize = sbp->f_bsize; /* XXX */ 819 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 820 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 821 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 822 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 823 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 824 sbp->f_ffree; 825 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 826 sbp->f_flag = mp->mnt_flag; 827 copy_statvfs_info(sbp, mp); 828 return (0); 829 } 830 831 static int 832 ntfs_sync ( 833 struct mount *mp, 834 int waitfor, 835 struct ucred *cred, 836 struct lwp *l) 837 { 838 /*dprintf(("ntfs_sync():\n"));*/ 839 return (0); 840 } 841 842 /*ARGSUSED*/ 843 static int 844 ntfs_fhtovp( 845 #if defined(__FreeBSD__) 846 struct mount *mp, 847 struct fid *fhp, 848 struct sockaddr *nam, 849 struct vnode **vpp, 850 int *exflagsp, 851 struct ucred **credanonp) 852 #elif defined(__NetBSD__) 853 struct mount *mp, 854 struct fid *fhp, 855 struct vnode **vpp) 856 #else 857 struct mount *mp, 858 struct fid *fhp, 859 struct mbuf *nam, 860 struct vnode **vpp, 861 int *exflagsp, 862 struct ucred **credanonp) 863 #endif 864 { 865 struct ntfid *ntfhp = (struct ntfid *)fhp; 866 int error; 867 868 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 869 ntfhp->ntfid_ino)); 870 871 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 872 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 873 if (error != 0) { 874 *vpp = NULLVP; 875 return (error); 876 } 877 878 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 879 * with NTFS, we don't need to check anything else for now */ 880 return (0); 881 } 882 883 static int 884 ntfs_vptofh( 885 struct vnode *vp, 886 struct fid *fhp) 887 { 888 struct ntnode *ntp; 889 struct ntfid *ntfhp; 890 struct fnode *fn; 891 892 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 893 vp)); 894 895 fn = VTOF(vp); 896 ntp = VTONT(vp); 897 ntfhp = (struct ntfid *)fhp; 898 ntfhp->ntfid_len = sizeof(struct ntfid); 899 ntfhp->ntfid_ino = ntp->i_number; 900 ntfhp->ntfid_attr = fn->f_attrtype; 901 #ifdef notyet 902 ntfhp->ntfid_gen = ntp->i_gen; 903 #endif 904 return (0); 905 } 906 907 int 908 ntfs_vgetex( 909 struct mount *mp, 910 ino_t ino, 911 u_int32_t attrtype, 912 char *attrname, 913 u_long lkflags, 914 u_long flags, 915 struct vnode **vpp) 916 { 917 int error; 918 struct ntfsmount *ntmp; 919 struct ntnode *ip; 920 struct fnode *fp; 921 struct vnode *vp; 922 enum vtype f_type = VBAD; 923 924 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 925 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 926 (u_long)flags )); 927 928 ntmp = VFSTONTFS(mp); 929 *vpp = NULL; 930 931 /* Get ntnode */ 932 error = ntfs_ntlookup(ntmp, ino, &ip); 933 if (error) { 934 printf("ntfs_vget: ntfs_ntget failed\n"); 935 return (error); 936 } 937 938 /* It may be not initialized fully, so force load it */ 939 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 940 error = ntfs_loadntnode(ntmp, ip); 941 if(error) { 942 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 943 ip->i_number); 944 ntfs_ntput(ip); 945 return (error); 946 } 947 } 948 949 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 950 if (error) { 951 printf("ntfs_vget: ntfs_fget failed\n"); 952 ntfs_ntput(ip); 953 return (error); 954 } 955 956 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 957 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 958 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 959 f_type = VDIR; 960 } else if (flags & VG_EXT) { 961 f_type = VNON; 962 fp->f_size = fp->f_allocated = 0; 963 } else { 964 f_type = VREG; 965 966 error = ntfs_filesize(ntmp, fp, 967 &fp->f_size, &fp->f_allocated); 968 if (error) { 969 ntfs_ntput(ip); 970 return (error); 971 } 972 } 973 974 fp->f_flag |= FN_VALID; 975 } 976 977 /* 978 * We may be calling vget() now. To avoid potential deadlock, we need 979 * to release ntnode lock, since due to locking order vnode 980 * lock has to be acquired first. 981 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 982 * prematurely. 983 */ 984 ntfs_ntput(ip); 985 986 if (FTOV(fp)) { 987 /* vget() returns error if the vnode has been recycled */ 988 if (vget(FTOV(fp), lkflags) == 0) { 989 *vpp = FTOV(fp); 990 return (0); 991 } 992 } 993 994 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 995 if(error) { 996 ntfs_frele(fp); 997 ntfs_ntput(ip); 998 return (error); 999 } 1000 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 1001 1002 #ifdef __FreeBSD__ 1003 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 1004 #endif 1005 fp->f_vp = vp; 1006 vp->v_data = fp; 1007 if (f_type != VBAD) 1008 vp->v_type = f_type; 1009 1010 if (ino == NTFS_ROOTINO) 1011 vp->v_flag |= VROOT; 1012 1013 if (lkflags & LK_TYPE_MASK) { 1014 error = vn_lock(vp, lkflags); 1015 if (error) { 1016 vput(vp); 1017 return (error); 1018 } 1019 } 1020 1021 genfs_node_init(vp, &ntfs_genfsops); 1022 VREF(ip->i_devvp); 1023 *vpp = vp; 1024 return (0); 1025 } 1026 1027 static int 1028 ntfs_vget( 1029 struct mount *mp, 1030 ino_t ino, 1031 struct vnode **vpp) 1032 { 1033 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 1034 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 1035 } 1036 1037 #if defined(__FreeBSD__) 1038 static struct vfsops ntfs_vfsops = { 1039 ntfs_mount, 1040 ntfs_start, 1041 ntfs_unmount, 1042 ntfs_root, 1043 ntfs_quotactl, 1044 ntfs_statvfs, 1045 ntfs_sync, 1046 ntfs_vget, 1047 ntfs_fhtovp, 1048 ntfs_vptofh, 1049 ntfs_init, 1050 NULL 1051 }; 1052 VFS_SET(ntfs_vfsops, ntfs, 0); 1053 #elif defined(__NetBSD__) 1054 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1055 1056 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1057 &ntfs_vnodeop_opv_desc, 1058 NULL, 1059 }; 1060 1061 struct vfsops ntfs_vfsops = { 1062 MOUNT_NTFS, 1063 ntfs_mount, 1064 ntfs_start, 1065 ntfs_unmount, 1066 ntfs_root, 1067 ntfs_quotactl, 1068 ntfs_statvfs, 1069 ntfs_sync, 1070 ntfs_vget, 1071 ntfs_fhtovp, 1072 ntfs_vptofh, 1073 ntfs_init, 1074 ntfs_reinit, 1075 ntfs_done, 1076 NULL, 1077 ntfs_mountroot, 1078 ntfs_checkexp, 1079 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1080 ntfs_vnodeopv_descs, 1081 }; 1082 #endif 1083
Indexes created Wed Oct 01 19:09:53 GMT 2025