ntfs_vfsops.c revision 1.10.2.9
1 /* $NetBSD: ntfs_vfsops.c,v 1.10.2.9 2005/04/01 14:30:56 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 1.10.2.9 2005/04/01 14:30:56 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 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, l)) != 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, l); 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 #if defined(__FreeBSD__) 268 struct proc *p ) 269 #else 270 struct lwp *l ) 271 #endif 272 { 273 int err = 0, flags; 274 struct vnode *devvp; 275 struct ntfs_args args; 276 277 if (mp->mnt_flag & MNT_GETARGS) { 278 struct ntfsmount *ntmp = VFSTONTFS(mp); 279 if (ntmp == NULL) 280 return EIO; 281 args.fspec = NULL; 282 args.uid = ntmp->ntm_uid; 283 args.gid = ntmp->ntm_gid; 284 args.mode = ntmp->ntm_mode; 285 args.flag = ntmp->ntm_flag; 286 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 287 return copyout(&args, data, sizeof(args)); 288 } 289 /* 290 *** 291 * Mounting non-root file system or updating a file system 292 *** 293 */ 294 295 /* copy in user arguments*/ 296 err = copyin(data, &args, sizeof (struct ntfs_args)); 297 if (err) 298 return (err); /* can't get arguments*/ 299 300 /* 301 * If updating, check whether changing from read-only to 302 * read/write; if there is no device name, that's all we do. 303 */ 304 if (mp->mnt_flag & MNT_UPDATE) { 305 /* if not updating name...*/ 306 if (args.fspec == 0) { 307 /* 308 * Process export requests. Jumping to "success" 309 * will return the vfs_export() error code. 310 */ 311 struct ntfsmount *ntm = VFSTONTFS(mp); 312 return (vfs_export(mp, &ntm->ntm_export, &args.export)); 313 } 314 315 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 316 return (EINVAL); 317 } 318 319 /* 320 * Not an update, or updating the name: look up the name 321 * and verify that it refers to a sensible block device. 322 */ 323 #ifdef __FreeBSD__ 324 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 325 #else 326 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 327 #endif 328 err = namei(ndp); 329 if (err) { 330 /* can't get devvp!*/ 331 return (err); 332 } 333 334 devvp = ndp->ni_vp; 335 336 if (devvp->v_type != VBLK) { 337 err = ENOTBLK; 338 goto fail; 339 } 340 #ifdef __FreeBSD__ 341 if (bdevsw(devvp->v_rdev) == NULL) { 342 #else 343 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 344 #endif 345 err = ENXIO; 346 goto fail; 347 } 348 if (mp->mnt_flag & MNT_UPDATE) { 349 #if 0 350 /* 351 ******************** 352 * UPDATE 353 ******************** 354 */ 355 356 if (devvp != ntmp->um_devvp) { 357 err = EINVAL; /* needs translation */ 358 goto fail; 359 } 360 361 /* 362 * Update device name only on success 363 */ 364 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 365 UIO_USERSPACE, mp, p); 366 if (err) 367 goto fail; 368 369 vrele(devvp); 370 #endif 371 } else { 372 /* 373 ******************** 374 * NEW MOUNT 375 ******************** 376 */ 377 378 /* 379 * Since this is a new mount, we want the names for 380 * the device and the mount point copied in. If an 381 * error occurs, the mountpoint is discarded by the 382 * upper level code. 383 */ 384 385 /* Save "last mounted on" info for mount point (NULL pad)*/ 386 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 387 UIO_USERSPACE, mp, l); 388 if (err) 389 goto fail; 390 391 /* 392 * Disallow multiple mounts of the same device. 393 * Disallow mounting of a device that is currently in use 394 * (except for root, which might share swap device for 395 * miniroot). 396 */ 397 err = vfs_mountedon(devvp); 398 if (err) 399 goto fail; 400 if (vcount(devvp) > 1 && devvp != rootvp) { 401 err = EBUSY; 402 goto fail; 403 } 404 if (mp->mnt_flag & MNT_RDONLY) 405 flags = FREAD; 406 else 407 flags = FREAD|FWRITE; 408 err = VOP_OPEN(devvp, flags, FSCRED, l); 409 if (err) 410 goto fail; 411 err = ntfs_mountfs(devvp, mp, &args, l); 412 if (err) { 413 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 414 (void)VOP_CLOSE(devvp, flags, NOCRED, l); 415 VOP_UNLOCK(devvp, 0); 416 goto fail; 417 } 418 } 419 420 #ifdef __FreeBSD__ 421 dostatvfs: 422 #endif 423 /* 424 * Initialize FS stat information in mount struct; uses both 425 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 426 * 427 * This code is common to root and non-root mounts 428 */ 429 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 430 return (err); 431 432 fail: 433 vrele(devvp); 434 return (err); 435 } 436 437 /* 438 * Common code for mount and mountroot 439 */ 440 int 441 ntfs_mountfs(devvp, mp, argsp, l) 442 struct vnode *devvp; 443 struct mount *mp; 444 struct ntfs_args *argsp; 445 struct lwp *l; 446 { 447 struct buf *bp; 448 struct ntfsmount *ntmp; 449 dev_t dev = devvp->v_rdev; 450 int error, ronly, i; 451 struct vnode *vp; 452 453 /* 454 * Flush out any old buffers remaining from a previous use. 455 */ 456 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 457 error = vinvalbuf(devvp, V_SAVE, l->l_proc->p_ucred, l, 0, 0); 458 VOP_UNLOCK(devvp, 0); 459 if (error) 460 return (error); 461 462 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 463 464 bp = NULL; 465 466 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 467 if (error) 468 goto out; 469 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 470 bzero( ntmp, sizeof *ntmp ); 471 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 472 brelse( bp ); 473 bp = NULL; 474 475 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 476 error = EINVAL; 477 dprintf(("ntfs_mountfs: invalid boot block\n")); 478 goto out; 479 } 480 481 { 482 int8_t cpr = ntmp->ntm_mftrecsz; 483 if( cpr > 0 ) 484 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 485 else 486 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 487 } 488 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 489 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 490 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 491 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 492 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 493 494 ntmp->ntm_mountp = mp; 495 ntmp->ntm_dev = dev; 496 ntmp->ntm_devvp = devvp; 497 ntmp->ntm_uid = argsp->uid; 498 ntmp->ntm_gid = argsp->gid; 499 ntmp->ntm_mode = argsp->mode; 500 ntmp->ntm_flag = argsp->flag; 501 mp->mnt_data = ntmp; 502 503 /* set file name encode/decode hooks XXX utf-8 only for now */ 504 ntmp->ntm_wget = ntfs_utf8_wget; 505 ntmp->ntm_wput = ntfs_utf8_wput; 506 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 507 508 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 509 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 510 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 511 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 512 513 /* 514 * We read in some system nodes to do not allow 515 * reclaim them and to have everytime access to them. 516 */ 517 { 518 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 519 for (i=0; i<3; i++) { 520 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 521 if(error) 522 goto out1; 523 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 524 VREF(ntmp->ntm_sysvn[pi[i]]); 525 vput(ntmp->ntm_sysvn[pi[i]]); 526 } 527 } 528 529 /* read the Unicode lowercase --> uppercase translation table, 530 * if necessary */ 531 if ((error = ntfs_toupper_use(mp, ntmp))) 532 goto out1; 533 534 /* 535 * Scan $BitMap and count free clusters 536 */ 537 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 538 if(error) 539 goto out1; 540 541 /* 542 * Read and translate to internal format attribute 543 * definition file. 544 */ 545 { 546 int num,j; 547 struct attrdef ad; 548 549 /* Open $AttrDef */ 550 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 551 if(error) 552 goto out1; 553 554 /* Count valid entries */ 555 for(num=0;;num++) { 556 error = ntfs_readattr(ntmp, VTONT(vp), 557 NTFS_A_DATA, NULL, 558 num * sizeof(ad), sizeof(ad), 559 &ad, NULL); 560 if (error) 561 goto out1; 562 if (ad.ad_name[0] == 0) 563 break; 564 } 565 566 /* Alloc memory for attribute definitions */ 567 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 568 num * sizeof(struct ntvattrdef), 569 M_NTFSMNT, M_WAITOK); 570 571 ntmp->ntm_adnum = num; 572 573 /* Read them and translate */ 574 for(i=0;i<num;i++){ 575 error = ntfs_readattr(ntmp, VTONT(vp), 576 NTFS_A_DATA, NULL, 577 i * sizeof(ad), sizeof(ad), 578 &ad, NULL); 579 if (error) 580 goto out1; 581 j = 0; 582 do { 583 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 584 } while(ad.ad_name[j++]); 585 ntmp->ntm_ad[i].ad_namelen = j - 1; 586 ntmp->ntm_ad[i].ad_type = ad.ad_type; 587 } 588 589 vput(vp); 590 } 591 592 #if defined(__FreeBSD__) 593 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 594 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 595 #else 596 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 597 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 598 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 599 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 600 #endif 601 mp->mnt_flag |= MNT_LOCAL; 602 devvp->v_specmountpoint = mp; 603 return (0); 604 605 out1: 606 for(i=0;i<NTFS_SYSNODESNUM;i++) 607 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 608 609 if (vflush(mp,NULLVP,0)) 610 dprintf(("ntfs_mountfs: vflush failed\n")); 611 612 out: 613 devvp->v_specmountpoint = NULL; 614 if (bp) 615 brelse(bp); 616 617 return (error); 618 } 619 620 static int 621 ntfs_start ( 622 struct mount *mp, 623 int flags, 624 struct lwp *l ) 625 { 626 return (0); 627 } 628 629 static int 630 ntfs_unmount( 631 struct mount *mp, 632 int mntflags, 633 struct lwp *l) 634 { 635 struct ntfsmount *ntmp; 636 int error, ronly = 0, flags, i; 637 638 dprintf(("ntfs_unmount: unmounting...\n")); 639 ntmp = VFSTONTFS(mp); 640 641 flags = 0; 642 if(mntflags & MNT_FORCE) 643 flags |= FORCECLOSE; 644 645 dprintf(("ntfs_unmount: vflushing...\n")); 646 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 647 if (error) { 648 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 649 return (error); 650 } 651 652 /* Check if only system vnodes are rest */ 653 for(i=0;i<NTFS_SYSNODESNUM;i++) 654 if((ntmp->ntm_sysvn[i]) && 655 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 656 657 /* Dereference all system vnodes */ 658 for(i=0;i<NTFS_SYSNODESNUM;i++) 659 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 660 661 /* vflush system vnodes */ 662 error = vflush(mp,NULLVP,flags); 663 if (error) { 664 /* XXX should this be panic() ? */ 665 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 666 } 667 668 /* Check if the type of device node isn't VBAD before 669 * touching v_specinfo. If the device vnode is revoked, the 670 * field is NULL and touching it causes null pointer derefercence. 671 */ 672 if (ntmp->ntm_devvp->v_type != VBAD) 673 ntmp->ntm_devvp->v_specmountpoint = NULL; 674 675 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 676 677 /* lock the device vnode before calling VOP_CLOSE() */ 678 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 679 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 680 NOCRED, l); 681 VOP_UNLOCK(ntmp->ntm_devvp, 0); 682 683 vrele(ntmp->ntm_devvp); 684 685 /* free the toupper table, if this has been last mounted ntfs volume */ 686 ntfs_toupper_unuse(); 687 688 dprintf(("ntfs_umount: freeing memory...\n")); 689 mp->mnt_data = NULL; 690 mp->mnt_flag &= ~MNT_LOCAL; 691 free(ntmp->ntm_ad, M_NTFSMNT); 692 FREE(ntmp, M_NTFSMNT); 693 return (error); 694 } 695 696 static int 697 ntfs_root( 698 struct mount *mp, 699 struct vnode **vpp) 700 { 701 struct vnode *nvp; 702 int error = 0; 703 704 dprintf(("ntfs_root(): sysvn: %p\n", 705 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 706 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 707 if(error) { 708 printf("ntfs_root: VFS_VGET failed: %d\n",error); 709 return (error); 710 } 711 712 *vpp = nvp; 713 return (0); 714 } 715 716 /* 717 * Do operations associated with quotas, not supported 718 */ 719 /* ARGSUSED */ 720 static int 721 ntfs_quotactl ( 722 struct mount *mp, 723 int cmds, 724 uid_t uid, 725 void *arg, 726 struct lwp *l) 727 { 728 729 return EOPNOTSUPP; 730 } 731 732 int 733 ntfs_calccfree( 734 struct ntfsmount *ntmp, 735 cn_t *cfreep) 736 { 737 struct vnode *vp; 738 u_int8_t *tmp; 739 int j, error; 740 cn_t cfree = 0; 741 size_t bmsize, i; 742 743 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 744 745 bmsize = VTOF(vp)->f_size; 746 747 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 748 749 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 750 0, bmsize, tmp, NULL); 751 if (error) 752 goto out; 753 754 for(i=0;i<bmsize;i++) 755 for(j=0;j<8;j++) 756 if(~tmp[i] & (1 << j)) cfree++; 757 *cfreep = cfree; 758 759 out: 760 free(tmp, M_TEMP); 761 return(error); 762 } 763 764 static int 765 ntfs_statvfs( 766 struct mount *mp, 767 struct statvfs *sbp, 768 struct lwp *l) 769 { 770 struct ntfsmount *ntmp = VFSTONTFS(mp); 771 u_int64_t mftallocated; 772 773 dprintf(("ntfs_statvfs():\n")); 774 775 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 776 777 #if defined(__FreeBSD__) 778 sbp->f_type = mp->mnt_vfc->vfc_typenum; 779 #endif 780 sbp->f_bsize = ntmp->ntm_bps; 781 sbp->f_frsize = sbp->f_bsize; /* XXX */ 782 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 783 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 784 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 785 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 786 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 787 sbp->f_ffree; 788 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 789 sbp->f_flag = mp->mnt_flag; 790 copy_statvfs_info(sbp, mp); 791 return (0); 792 } 793 794 static int 795 ntfs_sync ( 796 struct mount *mp, 797 int waitfor, 798 struct ucred *cred, 799 struct lwp *l) 800 { 801 /*dprintf(("ntfs_sync():\n"));*/ 802 return (0); 803 } 804 805 /*ARGSUSED*/ 806 static int 807 ntfs_fhtovp( 808 #if defined(__FreeBSD__) 809 struct mount *mp, 810 struct fid *fhp, 811 struct sockaddr *nam, 812 struct vnode **vpp, 813 int *exflagsp, 814 struct ucred **credanonp) 815 #elif defined(__NetBSD__) 816 struct mount *mp, 817 struct fid *fhp, 818 struct vnode **vpp) 819 #else 820 struct mount *mp, 821 struct fid *fhp, 822 struct mbuf *nam, 823 struct vnode **vpp, 824 int *exflagsp, 825 struct ucred **credanonp) 826 #endif 827 { 828 struct ntfid *ntfhp = (struct ntfid *)fhp; 829 int error; 830 831 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 832 ntfhp->ntfid_ino)); 833 834 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 835 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 836 if (error != 0) { 837 *vpp = NULLVP; 838 return (error); 839 } 840 841 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 842 * with NTFS, we don't need to check anything else for now */ 843 return (0); 844 } 845 846 static int 847 ntfs_vptofh( 848 struct vnode *vp, 849 struct fid *fhp) 850 { 851 struct ntnode *ntp; 852 struct ntfid *ntfhp; 853 struct fnode *fn; 854 855 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 856 vp)); 857 858 fn = VTOF(vp); 859 ntp = VTONT(vp); 860 ntfhp = (struct ntfid *)fhp; 861 ntfhp->ntfid_len = sizeof(struct ntfid); 862 ntfhp->ntfid_ino = ntp->i_number; 863 ntfhp->ntfid_attr = fn->f_attrtype; 864 #ifdef notyet 865 ntfhp->ntfid_gen = ntp->i_gen; 866 #endif 867 return (0); 868 } 869 870 int 871 ntfs_vgetex( 872 struct mount *mp, 873 ino_t ino, 874 u_int32_t attrtype, 875 char *attrname, 876 u_long lkflags, 877 u_long flags, 878 struct vnode **vpp) 879 { 880 int error; 881 struct ntfsmount *ntmp; 882 struct ntnode *ip; 883 struct fnode *fp; 884 struct vnode *vp; 885 enum vtype f_type = VBAD; 886 887 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 888 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 889 (u_long)flags )); 890 891 ntmp = VFSTONTFS(mp); 892 *vpp = NULL; 893 894 /* Get ntnode */ 895 error = ntfs_ntlookup(ntmp, ino, &ip); 896 if (error) { 897 printf("ntfs_vget: ntfs_ntget failed\n"); 898 return (error); 899 } 900 901 /* It may be not initialized fully, so force load it */ 902 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 903 error = ntfs_loadntnode(ntmp, ip); 904 if(error) { 905 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 906 ip->i_number); 907 ntfs_ntput(ip); 908 return (error); 909 } 910 } 911 912 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 913 if (error) { 914 printf("ntfs_vget: ntfs_fget failed\n"); 915 ntfs_ntput(ip); 916 return (error); 917 } 918 919 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 920 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 921 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 922 f_type = VDIR; 923 } else if (flags & VG_EXT) { 924 f_type = VNON; 925 fp->f_size = fp->f_allocated = 0; 926 } else { 927 f_type = VREG; 928 929 error = ntfs_filesize(ntmp, fp, 930 &fp->f_size, &fp->f_allocated); 931 if (error) { 932 ntfs_ntput(ip); 933 return (error); 934 } 935 } 936 937 fp->f_flag |= FN_VALID; 938 } 939 940 /* 941 * We may be calling vget() now. To avoid potential deadlock, we need 942 * to release ntnode lock, since due to locking order vnode 943 * lock has to be acquired first. 944 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 945 * prematurely. 946 */ 947 ntfs_ntput(ip); 948 949 if (FTOV(fp)) { 950 /* vget() returns error if the vnode has been recycled */ 951 if (vget(FTOV(fp), lkflags) == 0) { 952 *vpp = FTOV(fp); 953 return (0); 954 } 955 } 956 957 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 958 if(error) { 959 ntfs_frele(fp); 960 ntfs_ntput(ip); 961 return (error); 962 } 963 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 964 965 #ifdef __FreeBSD__ 966 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 967 #endif 968 fp->f_vp = vp; 969 vp->v_data = fp; 970 if (f_type != VBAD) 971 vp->v_type = f_type; 972 973 if (ino == NTFS_ROOTINO) 974 vp->v_flag |= VROOT; 975 976 if (lkflags & LK_TYPE_MASK) { 977 error = vn_lock(vp, lkflags); 978 if (error) { 979 vput(vp); 980 return (error); 981 } 982 } 983 984 genfs_node_init(vp, &ntfs_genfsops); 985 VREF(ip->i_devvp); 986 *vpp = vp; 987 return (0); 988 } 989 990 static int 991 ntfs_vget( 992 struct mount *mp, 993 ino_t ino, 994 struct vnode **vpp) 995 { 996 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 997 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 998 } 999 1000 #if defined(__FreeBSD__) 1001 static struct vfsops ntfs_vfsops = { 1002 ntfs_mount, 1003 ntfs_start, 1004 ntfs_unmount, 1005 ntfs_root, 1006 ntfs_quotactl, 1007 ntfs_statvfs, 1008 ntfs_sync, 1009 ntfs_vget, 1010 ntfs_fhtovp, 1011 ntfs_vptofh, 1012 ntfs_init, 1013 NULL 1014 }; 1015 VFS_SET(ntfs_vfsops, ntfs, 0); 1016 #elif defined(__NetBSD__) 1017 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1018 1019 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1020 &ntfs_vnodeop_opv_desc, 1021 NULL, 1022 }; 1023 1024 struct vfsops ntfs_vfsops = { 1025 MOUNT_NTFS, 1026 ntfs_mount, 1027 ntfs_start, 1028 ntfs_unmount, 1029 ntfs_root, 1030 ntfs_quotactl, 1031 ntfs_statvfs, 1032 ntfs_sync, 1033 ntfs_vget, 1034 ntfs_fhtovp, 1035 ntfs_vptofh, 1036 ntfs_init, 1037 ntfs_reinit, 1038 ntfs_done, 1039 NULL, 1040 ntfs_mountroot, 1041 ntfs_checkexp, 1042 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1043 vfs_stdextattrctl, 1044 ntfs_vnodeopv_descs, 1045 }; 1046 VFS_ATTACH(ntfs_vfsops); 1047 #endif 1048
Indexes created Wed Oct 01 19:09:53 GMT 2025