ntfs_vfsops.c revision 1.30
1 /* $NetBSD: ntfs_vfsops.c,v 1.30 2005/03/29 02:41:05 thorpej 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 1.30 2005/03/29 02:41:05 thorpej 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, flags; 270 struct vnode *devvp; 271 struct ntfs_args args; 272 273 if (mp->mnt_flag & MNT_GETARGS) { 274 struct ntfsmount *ntmp = VFSTONTFS(mp); 275 if (ntmp == NULL) 276 return EIO; 277 args.fspec = NULL; 278 args.uid = ntmp->ntm_uid; 279 args.gid = ntmp->ntm_gid; 280 args.mode = ntmp->ntm_mode; 281 args.flag = ntmp->ntm_flag; 282 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 283 return copyout(&args, data, sizeof(args)); 284 } 285 /* 286 *** 287 * Mounting non-root file system or updating a file system 288 *** 289 */ 290 291 /* copy in user arguments*/ 292 err = copyin(data, &args, sizeof (struct ntfs_args)); 293 if (err) 294 return (err); /* can't get arguments*/ 295 296 /* 297 * If updating, check whether changing from read-only to 298 * read/write; if there is no device name, that's all we do. 299 */ 300 if (mp->mnt_flag & MNT_UPDATE) { 301 /* if not updating name...*/ 302 if (args.fspec == 0) { 303 /* 304 * Process export requests. Jumping to "success" 305 * will return the vfs_export() error code. 306 */ 307 struct ntfsmount *ntm = VFSTONTFS(mp); 308 return (vfs_export(mp, &ntm->ntm_export, &args.export)); 309 } 310 311 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 312 return (EINVAL); 313 } 314 315 /* 316 * Not an update, or updating the name: look up the name 317 * and verify that it refers to a sensible block device. 318 */ 319 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 320 err = namei(ndp); 321 if (err) { 322 /* can't get devvp!*/ 323 return (err); 324 } 325 326 devvp = ndp->ni_vp; 327 328 if (devvp->v_type != VBLK) { 329 err = ENOTBLK; 330 goto fail; 331 } 332 #ifdef __FreeBSD__ 333 if (bdevsw(devvp->v_rdev) == NULL) { 334 #else 335 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 336 #endif 337 err = ENXIO; 338 goto fail; 339 } 340 if (mp->mnt_flag & MNT_UPDATE) { 341 #if 0 342 /* 343 ******************** 344 * UPDATE 345 ******************** 346 */ 347 348 if (devvp != ntmp->um_devvp) { 349 err = EINVAL; /* needs translation */ 350 goto fail; 351 } 352 353 /* 354 * Update device name only on success 355 */ 356 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 357 UIO_USERSPACE, mp, p); 358 if (err) 359 goto fail; 360 361 vrele(devvp); 362 #endif 363 } else { 364 /* 365 ******************** 366 * NEW MOUNT 367 ******************** 368 */ 369 370 /* 371 * Since this is a new mount, we want the names for 372 * the device and the mount point copied in. If an 373 * error occurs, the mountpoint is discarded by the 374 * upper level code. 375 */ 376 377 /* Save "last mounted on" info for mount point (NULL pad)*/ 378 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 379 UIO_USERSPACE, mp, p); 380 if (err) 381 goto fail; 382 383 /* 384 * Disallow multiple mounts of the same device. 385 * Disallow mounting of a device that is currently in use 386 * (except for root, which might share swap device for 387 * miniroot). 388 */ 389 err = vfs_mountedon(devvp); 390 if (err) 391 goto fail; 392 if (vcount(devvp) > 1 && devvp != rootvp) { 393 err = EBUSY; 394 goto fail; 395 } 396 if (mp->mnt_flag & MNT_RDONLY) 397 flags = FREAD; 398 else 399 flags = FREAD|FWRITE; 400 err = VOP_OPEN(devvp, flags, FSCRED, p); 401 if (err) 402 goto fail; 403 err = ntfs_mountfs(devvp, mp, &args, p); 404 if (err) { 405 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 406 (void)VOP_CLOSE(devvp, flags, NOCRED, p); 407 VOP_UNLOCK(devvp, 0); 408 goto fail; 409 } 410 } 411 412 #ifdef __FreeBSD__ 413 dostatvfs: 414 #endif 415 /* 416 * Initialize FS stat information in mount struct; uses both 417 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 418 * 419 * This code is common to root and non-root mounts 420 */ 421 (void)VFS_STATVFS(mp, &mp->mnt_stat, p); 422 return (err); 423 424 fail: 425 vrele(devvp); 426 return (err); 427 } 428 429 /* 430 * Common code for mount and mountroot 431 */ 432 int 433 ntfs_mountfs(devvp, mp, argsp, p) 434 struct vnode *devvp; 435 struct mount *mp; 436 struct ntfs_args *argsp; 437 struct proc *p; 438 { 439 struct buf *bp; 440 struct ntfsmount *ntmp; 441 dev_t dev = devvp->v_rdev; 442 int error, ronly, i; 443 struct vnode *vp; 444 445 /* 446 * Flush out any old buffers remaining from a previous use. 447 */ 448 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 449 error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); 450 VOP_UNLOCK(devvp, 0); 451 if (error) 452 return (error); 453 454 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 455 456 bp = NULL; 457 458 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 459 if (error) 460 goto out; 461 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 462 bzero( ntmp, sizeof *ntmp ); 463 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 464 brelse( bp ); 465 bp = NULL; 466 467 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 468 error = EINVAL; 469 dprintf(("ntfs_mountfs: invalid boot block\n")); 470 goto out; 471 } 472 473 { 474 int8_t cpr = ntmp->ntm_mftrecsz; 475 if( cpr > 0 ) 476 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 477 else 478 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 479 } 480 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 481 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 482 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 483 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 484 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 485 486 ntmp->ntm_mountp = mp; 487 ntmp->ntm_dev = dev; 488 ntmp->ntm_devvp = devvp; 489 ntmp->ntm_uid = argsp->uid; 490 ntmp->ntm_gid = argsp->gid; 491 ntmp->ntm_mode = argsp->mode; 492 ntmp->ntm_flag = argsp->flag; 493 mp->mnt_data = ntmp; 494 495 /* set file name encode/decode hooks XXX utf-8 only for now */ 496 ntmp->ntm_wget = ntfs_utf8_wget; 497 ntmp->ntm_wput = ntfs_utf8_wput; 498 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 499 500 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 501 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 502 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 503 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 504 505 /* 506 * We read in some system nodes to do not allow 507 * reclaim them and to have everytime access to them. 508 */ 509 { 510 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 511 for (i=0; i<3; i++) { 512 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 513 if(error) 514 goto out1; 515 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 516 VREF(ntmp->ntm_sysvn[pi[i]]); 517 vput(ntmp->ntm_sysvn[pi[i]]); 518 } 519 } 520 521 /* read the Unicode lowercase --> uppercase translation table, 522 * if necessary */ 523 if ((error = ntfs_toupper_use(mp, ntmp))) 524 goto out1; 525 526 /* 527 * Scan $BitMap and count free clusters 528 */ 529 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 530 if(error) 531 goto out1; 532 533 /* 534 * Read and translate to internal format attribute 535 * definition file. 536 */ 537 { 538 int num,j; 539 struct attrdef ad; 540 541 /* Open $AttrDef */ 542 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 543 if(error) 544 goto out1; 545 546 /* Count valid entries */ 547 for(num=0;;num++) { 548 error = ntfs_readattr(ntmp, VTONT(vp), 549 NTFS_A_DATA, NULL, 550 num * sizeof(ad), sizeof(ad), 551 &ad, NULL); 552 if (error) 553 goto out1; 554 if (ad.ad_name[0] == 0) 555 break; 556 } 557 558 /* Alloc memory for attribute definitions */ 559 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 560 num * sizeof(struct ntvattrdef), 561 M_NTFSMNT, M_WAITOK); 562 563 ntmp->ntm_adnum = num; 564 565 /* Read them and translate */ 566 for(i=0;i<num;i++){ 567 error = ntfs_readattr(ntmp, VTONT(vp), 568 NTFS_A_DATA, NULL, 569 i * sizeof(ad), sizeof(ad), 570 &ad, NULL); 571 if (error) 572 goto out1; 573 j = 0; 574 do { 575 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 576 } while(ad.ad_name[j++]); 577 ntmp->ntm_ad[i].ad_namelen = j - 1; 578 ntmp->ntm_ad[i].ad_type = ad.ad_type; 579 } 580 581 vput(vp); 582 } 583 584 #if defined(__FreeBSD__) 585 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 586 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 587 #else 588 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 589 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 590 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 591 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 592 #endif 593 mp->mnt_flag |= MNT_LOCAL; 594 devvp->v_specmountpoint = mp; 595 return (0); 596 597 out1: 598 for(i=0;i<NTFS_SYSNODESNUM;i++) 599 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 600 601 if (vflush(mp,NULLVP,0)) 602 dprintf(("ntfs_mountfs: vflush failed\n")); 603 604 out: 605 devvp->v_specmountpoint = NULL; 606 if (bp) 607 brelse(bp); 608 609 return (error); 610 } 611 612 static int 613 ntfs_start ( 614 struct mount *mp, 615 int flags, 616 struct proc *p ) 617 { 618 return (0); 619 } 620 621 static int 622 ntfs_unmount( 623 struct mount *mp, 624 int mntflags, 625 struct proc *p) 626 { 627 struct ntfsmount *ntmp; 628 int error, ronly = 0, flags, i; 629 630 dprintf(("ntfs_unmount: unmounting...\n")); 631 ntmp = VFSTONTFS(mp); 632 633 flags = 0; 634 if(mntflags & MNT_FORCE) 635 flags |= FORCECLOSE; 636 637 dprintf(("ntfs_unmount: vflushing...\n")); 638 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 639 if (error) { 640 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 641 return (error); 642 } 643 644 /* Check if only system vnodes are rest */ 645 for(i=0;i<NTFS_SYSNODESNUM;i++) 646 if((ntmp->ntm_sysvn[i]) && 647 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 648 649 /* Dereference all system vnodes */ 650 for(i=0;i<NTFS_SYSNODESNUM;i++) 651 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 652 653 /* vflush system vnodes */ 654 error = vflush(mp,NULLVP,flags); 655 if (error) { 656 /* XXX should this be panic() ? */ 657 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 658 } 659 660 /* Check if the type of device node isn't VBAD before 661 * touching v_specinfo. If the device vnode is revoked, the 662 * field is NULL and touching it causes null pointer derefercence. 663 */ 664 if (ntmp->ntm_devvp->v_type != VBAD) 665 ntmp->ntm_devvp->v_specmountpoint = NULL; 666 667 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0); 668 669 /* lock the device vnode before calling VOP_CLOSE() */ 670 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 671 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 672 NOCRED, p); 673 VOP_UNLOCK(ntmp->ntm_devvp, 0); 674 675 vrele(ntmp->ntm_devvp); 676 677 /* free the toupper table, if this has been last mounted ntfs volume */ 678 ntfs_toupper_unuse(); 679 680 dprintf(("ntfs_umount: freeing memory...\n")); 681 mp->mnt_data = NULL; 682 mp->mnt_flag &= ~MNT_LOCAL; 683 free(ntmp->ntm_ad, M_NTFSMNT); 684 FREE(ntmp, M_NTFSMNT); 685 return (error); 686 } 687 688 static int 689 ntfs_root( 690 struct mount *mp, 691 struct vnode **vpp ) 692 { 693 struct vnode *nvp; 694 int error = 0; 695 696 dprintf(("ntfs_root(): sysvn: %p\n", 697 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 698 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 699 if(error) { 700 printf("ntfs_root: VFS_VGET failed: %d\n",error); 701 return (error); 702 } 703 704 *vpp = nvp; 705 return (0); 706 } 707 708 /* 709 * Do operations associated with quotas, not supported 710 */ 711 /* ARGSUSED */ 712 static int 713 ntfs_quotactl ( 714 struct mount *mp, 715 int cmds, 716 uid_t uid, 717 void *arg, 718 struct proc *p) 719 { 720 721 return EOPNOTSUPP; 722 } 723 724 int 725 ntfs_calccfree( 726 struct ntfsmount *ntmp, 727 cn_t *cfreep) 728 { 729 struct vnode *vp; 730 u_int8_t *tmp; 731 int j, error; 732 cn_t cfree = 0; 733 size_t bmsize, i; 734 735 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 736 737 bmsize = VTOF(vp)->f_size; 738 739 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 740 741 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 742 0, bmsize, tmp, NULL); 743 if (error) 744 goto out; 745 746 for(i=0;i<bmsize;i++) 747 for(j=0;j<8;j++) 748 if(~tmp[i] & (1 << j)) cfree++; 749 *cfreep = cfree; 750 751 out: 752 free(tmp, M_TEMP); 753 return(error); 754 } 755 756 static int 757 ntfs_statvfs( 758 struct mount *mp, 759 struct statvfs *sbp, 760 struct proc *p) 761 { 762 struct ntfsmount *ntmp = VFSTONTFS(mp); 763 u_int64_t mftallocated; 764 765 dprintf(("ntfs_statvfs():\n")); 766 767 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 768 769 #if defined(__FreeBSD__) 770 sbp->f_type = mp->mnt_vfc->vfc_typenum; 771 #endif 772 sbp->f_bsize = ntmp->ntm_bps; 773 sbp->f_frsize = sbp->f_bsize; /* XXX */ 774 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 775 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 776 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 777 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 778 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 779 sbp->f_ffree; 780 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 781 sbp->f_flag = mp->mnt_flag; 782 copy_statvfs_info(sbp, mp); 783 return (0); 784 } 785 786 static int 787 ntfs_sync ( 788 struct mount *mp, 789 int waitfor, 790 struct ucred *cred, 791 struct proc *p) 792 { 793 /*dprintf(("ntfs_sync():\n"));*/ 794 return (0); 795 } 796 797 /*ARGSUSED*/ 798 static int 799 ntfs_fhtovp( 800 #if defined(__FreeBSD__) 801 struct mount *mp, 802 struct fid *fhp, 803 struct sockaddr *nam, 804 struct vnode **vpp, 805 int *exflagsp, 806 struct ucred **credanonp) 807 #elif defined(__NetBSD__) 808 struct mount *mp, 809 struct fid *fhp, 810 struct vnode **vpp) 811 #else 812 struct mount *mp, 813 struct fid *fhp, 814 struct mbuf *nam, 815 struct vnode **vpp, 816 int *exflagsp, 817 struct ucred **credanonp) 818 #endif 819 { 820 struct ntfid *ntfhp = (struct ntfid *)fhp; 821 int error; 822 823 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 824 ntfhp->ntfid_ino)); 825 826 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 827 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 828 if (error != 0) { 829 *vpp = NULLVP; 830 return (error); 831 } 832 833 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 834 * with NTFS, we don't need to check anything else for now */ 835 return (0); 836 } 837 838 static int 839 ntfs_vptofh( 840 struct vnode *vp, 841 struct fid *fhp) 842 { 843 struct ntnode *ntp; 844 struct ntfid *ntfhp; 845 struct fnode *fn; 846 847 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 848 vp)); 849 850 fn = VTOF(vp); 851 ntp = VTONT(vp); 852 ntfhp = (struct ntfid *)fhp; 853 ntfhp->ntfid_len = sizeof(struct ntfid); 854 ntfhp->ntfid_ino = ntp->i_number; 855 ntfhp->ntfid_attr = fn->f_attrtype; 856 #ifdef notyet 857 ntfhp->ntfid_gen = ntp->i_gen; 858 #endif 859 return (0); 860 } 861 862 int 863 ntfs_vgetex( 864 struct mount *mp, 865 ino_t ino, 866 u_int32_t attrtype, 867 char *attrname, 868 u_long lkflags, 869 u_long flags, 870 struct proc *p, 871 struct vnode **vpp) 872 { 873 int error; 874 struct ntfsmount *ntmp; 875 struct ntnode *ip; 876 struct fnode *fp; 877 struct vnode *vp; 878 enum vtype f_type = VBAD; 879 880 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 881 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 882 (u_long)flags )); 883 884 ntmp = VFSTONTFS(mp); 885 *vpp = NULL; 886 887 /* Get ntnode */ 888 error = ntfs_ntlookup(ntmp, ino, &ip); 889 if (error) { 890 printf("ntfs_vget: ntfs_ntget failed\n"); 891 return (error); 892 } 893 894 /* It may be not initialized fully, so force load it */ 895 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 896 error = ntfs_loadntnode(ntmp, ip); 897 if(error) { 898 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 899 ip->i_number); 900 ntfs_ntput(ip); 901 return (error); 902 } 903 } 904 905 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 906 if (error) { 907 printf("ntfs_vget: ntfs_fget failed\n"); 908 ntfs_ntput(ip); 909 return (error); 910 } 911 912 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 913 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 914 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 915 f_type = VDIR; 916 } else if (flags & VG_EXT) { 917 f_type = VNON; 918 fp->f_size = fp->f_allocated = 0; 919 } else { 920 f_type = VREG; 921 922 error = ntfs_filesize(ntmp, fp, 923 &fp->f_size, &fp->f_allocated); 924 if (error) { 925 ntfs_ntput(ip); 926 return (error); 927 } 928 } 929 930 fp->f_flag |= FN_VALID; 931 } 932 933 /* 934 * We may be calling vget() now. To avoid potential deadlock, we need 935 * to release ntnode lock, since due to locking order vnode 936 * lock has to be acquired first. 937 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 938 * prematurely. 939 */ 940 ntfs_ntput(ip); 941 942 if (FTOV(fp)) { 943 /* vget() returns error if the vnode has been recycled */ 944 if (vget(FTOV(fp), lkflags) == 0) { 945 *vpp = FTOV(fp); 946 return (0); 947 } 948 } 949 950 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 951 if(error) { 952 ntfs_frele(fp); 953 ntfs_ntput(ip); 954 return (error); 955 } 956 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 957 958 #ifdef __FreeBSD__ 959 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 960 #endif 961 fp->f_vp = vp; 962 vp->v_data = fp; 963 if (f_type != VBAD) 964 vp->v_type = f_type; 965 966 if (ino == NTFS_ROOTINO) 967 vp->v_flag |= VROOT; 968 969 if (lkflags & LK_TYPE_MASK) { 970 error = vn_lock(vp, lkflags); 971 if (error) { 972 vput(vp); 973 return (error); 974 } 975 } 976 977 genfs_node_init(vp, &ntfs_genfsops); 978 VREF(ip->i_devvp); 979 *vpp = vp; 980 return (0); 981 } 982 983 static int 984 ntfs_vget( 985 struct mount *mp, 986 ino_t ino, 987 struct vnode **vpp) 988 { 989 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 990 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 991 } 992 993 #if defined(__FreeBSD__) 994 static struct vfsops ntfs_vfsops = { 995 ntfs_mount, 996 ntfs_start, 997 ntfs_unmount, 998 ntfs_root, 999 ntfs_quotactl, 1000 ntfs_statvfs, 1001 ntfs_sync, 1002 ntfs_vget, 1003 ntfs_fhtovp, 1004 ntfs_vptofh, 1005 ntfs_init, 1006 NULL 1007 }; 1008 VFS_SET(ntfs_vfsops, ntfs, 0); 1009 #elif defined(__NetBSD__) 1010 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1011 1012 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1013 &ntfs_vnodeop_opv_desc, 1014 NULL, 1015 }; 1016 1017 struct vfsops ntfs_vfsops = { 1018 MOUNT_NTFS, 1019 ntfs_mount, 1020 ntfs_start, 1021 ntfs_unmount, 1022 ntfs_root, 1023 ntfs_quotactl, 1024 ntfs_statvfs, 1025 ntfs_sync, 1026 ntfs_vget, 1027 ntfs_fhtovp, 1028 ntfs_vptofh, 1029 ntfs_init, 1030 ntfs_reinit, 1031 ntfs_done, 1032 NULL, 1033 ntfs_mountroot, 1034 ntfs_checkexp, 1035 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1036 vfs_stdextattrctl, 1037 ntfs_vnodeopv_descs, 1038 }; 1039 VFS_ATTACH(ntfs_vfsops); 1040 #endif 1041
Indexes created Mon Sep 22 05:09:51 GMT 2025