ntfs_vfsops.c revision 1.40
1 /* $NetBSD: ntfs_vfsops.c,v 1.40 2006/04/15 02:42:08 christos 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 1.40 2006/04/15 02:42:08 christos 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 #include <fs/ntfs/ntfs.h> 57 #include <fs/ntfs/ntfs_inode.h> 58 #include <fs/ntfs/ntfs_subr.h> 59 #include <fs/ntfs/ntfs_vfsops.h> 60 #include <fs/ntfs/ntfs_ihash.h> 61 #include <fs/ntfs/ntfsmount.h> 62 63 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 64 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 65 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 66 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 67 68 #if defined(__FreeBSD__) 69 static int ntfs_mount(struct mount *, char *, caddr_t, 70 struct nameidata *, struct proc *); 71 #else 72 static int ntfs_mount(struct mount *, const char *, void *, 73 struct nameidata *, struct lwp *); 74 #endif 75 static int ntfs_quotactl(struct mount *, int, uid_t, void *, 76 struct lwp *); 77 static int ntfs_root(struct mount *, struct vnode **); 78 static int ntfs_start(struct mount *, int, struct lwp *); 79 static int ntfs_statvfs(struct mount *, struct statvfs *, 80 struct lwp *); 81 static int ntfs_sync(struct mount *, int, struct ucred *, 82 struct lwp *); 83 static int ntfs_unmount(struct mount *, int, struct lwp *); 84 static int ntfs_vget(struct mount *mp, ino_t ino, 85 struct vnode **vpp); 86 static int ntfs_mountfs(struct vnode *, struct mount *, 87 struct ntfs_args *, struct lwp *); 88 static int ntfs_vptofh(struct vnode *, struct fid *); 89 90 #if defined(__FreeBSD__) 91 static int ntfs_init(struct vfsconf *); 92 static int ntfs_fhtovp(struct mount *, struct fid *, 93 struct sockaddr *, struct vnode **, 94 int *, struct ucred **); 95 #elif defined(__NetBSD__) 96 static void ntfs_init(void); 97 static void ntfs_reinit(void); 98 static void ntfs_done(void); 99 static int ntfs_fhtovp(struct mount *, struct fid *, 100 struct vnode **); 101 static int ntfs_mountroot(void); 102 #else 103 static int ntfs_init(void); 104 static int ntfs_fhtovp(struct mount *, struct fid *, 105 struct mbuf *, struct vnode **, 106 int *, struct ucred **); 107 #endif 108 109 static const struct genfs_ops ntfs_genfsops = { 110 .gop_write = genfs_compat_gop_write, 111 }; 112 113 #ifdef __NetBSD__ 114 115 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 116 { 117 118 sysctl_createv(clog, 0, NULL, NULL, 119 CTLFLAG_PERMANENT, 120 CTLTYPE_NODE, "vfs", NULL, 121 NULL, 0, NULL, 0, 122 CTL_VFS, CTL_EOL); 123 sysctl_createv(clog, 0, NULL, NULL, 124 CTLFLAG_PERMANENT, 125 CTLTYPE_NODE, "ntfs", 126 SYSCTL_DESCR("NTFS file system"), 127 NULL, 0, NULL, 0, 128 CTL_VFS, 20, CTL_EOL); 129 /* 130 * XXX the "20" above could be dynamic, thereby eliminating 131 * one more instance of the "number to vfs" mapping problem, 132 * but "20" is the order as taken from sys/mount.h 133 */ 134 } 135 136 static int 137 ntfs_mountroot() 138 { 139 struct mount *mp; 140 struct lwp *l = curlwp; /* XXX */ 141 int error; 142 struct ntfs_args args; 143 144 if (device_class(root_device) != DV_DISK) 145 return (ENODEV); 146 147 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 148 vrele(rootvp); 149 return (error); 150 } 151 152 args.flag = 0; 153 args.uid = 0; 154 args.gid = 0; 155 args.mode = 0777; 156 157 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 158 mp->mnt_op->vfs_refcount--; 159 vfs_unbusy(mp); 160 free(mp, M_MOUNT); 161 return (error); 162 } 163 164 simple_lock(&mountlist_slock); 165 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 166 simple_unlock(&mountlist_slock); 167 (void)ntfs_statvfs(mp, &mp->mnt_stat, l); 168 vfs_unbusy(mp); 169 return (0); 170 } 171 172 static void 173 ntfs_init() 174 { 175 #ifdef _LKM 176 malloc_type_attach(M_NTFSMNT); 177 malloc_type_attach(M_NTFSNTNODE); 178 malloc_type_attach(M_NTFSFNODE); 179 malloc_type_attach(M_NTFSDIR); 180 malloc_type_attach(M_NTFSNTHASH); 181 malloc_type_attach(M_NTFSNTVATTR); 182 malloc_type_attach(M_NTFSRDATA); 183 malloc_type_attach(M_NTFSDECOMP); 184 malloc_type_attach(M_NTFSRUN); 185 #endif 186 ntfs_nthashinit(); 187 ntfs_toupper_init(); 188 } 189 190 static void 191 ntfs_reinit() 192 { 193 ntfs_nthashreinit(); 194 } 195 196 static void 197 ntfs_done() 198 { 199 ntfs_nthashdone(); 200 #ifdef _LKM 201 malloc_type_detach(M_NTFSMNT); 202 malloc_type_detach(M_NTFSNTNODE); 203 malloc_type_detach(M_NTFSFNODE); 204 malloc_type_detach(M_NTFSDIR); 205 malloc_type_detach(M_NTFSNTHASH); 206 malloc_type_detach(M_NTFSNTVATTR); 207 malloc_type_detach(M_NTFSRDATA); 208 malloc_type_detach(M_NTFSDECOMP); 209 malloc_type_detach(M_NTFSRUN); 210 #endif 211 } 212 213 #elif defined(__FreeBSD__) 214 215 static int 216 ntfs_init ( 217 struct vfsconf *vcp ) 218 { 219 ntfs_nthashinit(); 220 ntfs_toupper_init(); 221 return 0; 222 } 223 224 #endif /* NetBSD */ 225 226 static int 227 ntfs_mount ( 228 struct mount *mp, 229 #if defined(__FreeBSD__) 230 char *path, 231 caddr_t data, 232 #else 233 const char *path, 234 void *data, 235 #endif 236 struct nameidata *ndp, 237 #if defined(__FreeBSD__) 238 struct proc *p ) 239 #else 240 struct lwp *l ) 241 #endif 242 { 243 int err = 0, flags; 244 struct vnode *devvp; 245 struct ntfs_args args; 246 247 if (mp->mnt_flag & MNT_GETARGS) { 248 struct ntfsmount *ntmp = VFSTONTFS(mp); 249 if (ntmp == NULL) 250 return EIO; 251 args.fspec = NULL; 252 args.uid = ntmp->ntm_uid; 253 args.gid = ntmp->ntm_gid; 254 args.mode = ntmp->ntm_mode; 255 args.flag = ntmp->ntm_flag; 256 return copyout(&args, data, sizeof(args)); 257 } 258 /* 259 *** 260 * Mounting non-root file system or updating a file system 261 *** 262 */ 263 264 /* copy in user arguments*/ 265 err = copyin(data, &args, sizeof (struct ntfs_args)); 266 if (err) 267 return (err); /* can't get arguments*/ 268 269 /* 270 * If updating, check whether changing from read-only to 271 * read/write; if there is no device name, that's all we do. 272 */ 273 if (mp->mnt_flag & MNT_UPDATE) { 274 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 275 return (EINVAL); 276 } 277 278 /* 279 * Not an update, or updating the name: look up the name 280 * and verify that it refers to a sensible block device. 281 */ 282 #ifdef __FreeBSD__ 283 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 284 #else 285 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 286 #endif 287 err = namei(ndp); 288 if (err) { 289 /* can't get devvp!*/ 290 return (err); 291 } 292 293 devvp = ndp->ni_vp; 294 295 if (devvp->v_type != VBLK) { 296 err = ENOTBLK; 297 goto fail; 298 } 299 #ifdef __FreeBSD__ 300 if (bdevsw(devvp->v_rdev) == NULL) { 301 #else 302 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 303 #endif 304 err = ENXIO; 305 goto fail; 306 } 307 if (mp->mnt_flag & MNT_UPDATE) { 308 #if 0 309 /* 310 ******************** 311 * UPDATE 312 ******************** 313 */ 314 315 if (devvp != ntmp->um_devvp) { 316 err = EINVAL; /* needs translation */ 317 goto fail; 318 } 319 320 /* 321 * Update device name only on success 322 */ 323 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 324 UIO_USERSPACE, mp, p); 325 if (err) 326 goto fail; 327 328 vrele(devvp); 329 #endif 330 } else { 331 /* 332 ******************** 333 * NEW MOUNT 334 ******************** 335 */ 336 337 /* 338 * Since this is a new mount, we want the names for 339 * the device and the mount point copied in. If an 340 * error occurs, the mountpoint is discarded by the 341 * upper level code. 342 */ 343 344 /* Save "last mounted on" info for mount point (NULL pad)*/ 345 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 346 UIO_USERSPACE, mp, l); 347 if (err) 348 goto fail; 349 350 /* 351 * Disallow multiple mounts of the same device. 352 * Disallow mounting of a device that is currently in use 353 * (except for root, which might share swap device for 354 * miniroot). 355 */ 356 err = vfs_mountedon(devvp); 357 if (err) 358 goto fail; 359 if (vcount(devvp) > 1 && devvp != rootvp) { 360 err = EBUSY; 361 goto fail; 362 } 363 if (mp->mnt_flag & MNT_RDONLY) 364 flags = FREAD; 365 else 366 flags = FREAD|FWRITE; 367 err = VOP_OPEN(devvp, flags, FSCRED, l); 368 if (err) 369 goto fail; 370 err = ntfs_mountfs(devvp, mp, &args, l); 371 if (err) { 372 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 373 (void)VOP_CLOSE(devvp, flags, NOCRED, l); 374 VOP_UNLOCK(devvp, 0); 375 goto fail; 376 } 377 } 378 379 #ifdef __FreeBSD__ 380 dostatvfs: 381 #endif 382 /* 383 * Initialize FS stat information in mount struct; uses both 384 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 385 * 386 * This code is common to root and non-root mounts 387 */ 388 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 389 return (err); 390 391 fail: 392 vrele(devvp); 393 return (err); 394 } 395 396 /* 397 * Common code for mount and mountroot 398 */ 399 int 400 ntfs_mountfs(devvp, mp, argsp, l) 401 struct vnode *devvp; 402 struct mount *mp; 403 struct ntfs_args *argsp; 404 struct lwp *l; 405 { 406 struct buf *bp; 407 struct ntfsmount *ntmp; 408 dev_t dev = devvp->v_rdev; 409 int error, ronly, i; 410 struct vnode *vp; 411 412 ntmp = NULL; 413 414 /* 415 * Flush out any old buffers remaining from a previous use. 416 */ 417 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 418 error = vinvalbuf(devvp, V_SAVE, l->l_proc->p_ucred, l, 0, 0); 419 VOP_UNLOCK(devvp, 0); 420 if (error) 421 return (error); 422 423 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 424 425 bp = NULL; 426 427 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 428 if (error) 429 goto out; 430 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 431 bzero( ntmp, sizeof *ntmp ); 432 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 433 brelse( bp ); 434 bp = NULL; 435 436 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 437 error = EINVAL; 438 dprintf(("ntfs_mountfs: invalid boot block\n")); 439 goto out; 440 } 441 442 { 443 int8_t cpr = ntmp->ntm_mftrecsz; 444 if( cpr > 0 ) 445 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 446 else 447 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 448 } 449 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 450 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 451 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 452 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 453 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 454 455 ntmp->ntm_mountp = mp; 456 ntmp->ntm_dev = dev; 457 ntmp->ntm_devvp = devvp; 458 ntmp->ntm_uid = argsp->uid; 459 ntmp->ntm_gid = argsp->gid; 460 ntmp->ntm_mode = argsp->mode; 461 ntmp->ntm_flag = argsp->flag; 462 mp->mnt_data = ntmp; 463 464 /* set file name encode/decode hooks XXX utf-8 only for now */ 465 ntmp->ntm_wget = ntfs_utf8_wget; 466 ntmp->ntm_wput = ntfs_utf8_wput; 467 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 468 469 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 470 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 471 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 472 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 473 474 /* 475 * We read in some system nodes to do not allow 476 * reclaim them and to have everytime access to them. 477 */ 478 { 479 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 480 for (i=0; i<3; i++) { 481 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 482 if(error) 483 goto out1; 484 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 485 VREF(ntmp->ntm_sysvn[pi[i]]); 486 vput(ntmp->ntm_sysvn[pi[i]]); 487 } 488 } 489 490 /* read the Unicode lowercase --> uppercase translation table, 491 * if necessary */ 492 if ((error = ntfs_toupper_use(mp, ntmp))) 493 goto out1; 494 495 /* 496 * Scan $BitMap and count free clusters 497 */ 498 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 499 if(error) 500 goto out1; 501 502 /* 503 * Read and translate to internal format attribute 504 * definition file. 505 */ 506 { 507 int num,j; 508 struct attrdef ad; 509 510 /* Open $AttrDef */ 511 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 512 if(error) 513 goto out1; 514 515 /* Count valid entries */ 516 for(num=0;;num++) { 517 error = ntfs_readattr(ntmp, VTONT(vp), 518 NTFS_A_DATA, NULL, 519 num * sizeof(ad), sizeof(ad), 520 &ad, NULL); 521 if (error) 522 goto out1; 523 if (ad.ad_name[0] == 0) 524 break; 525 } 526 527 /* Alloc memory for attribute definitions */ 528 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 529 num * sizeof(struct ntvattrdef), 530 M_NTFSMNT, M_WAITOK); 531 532 ntmp->ntm_adnum = num; 533 534 /* Read them and translate */ 535 for(i=0;i<num;i++){ 536 error = ntfs_readattr(ntmp, VTONT(vp), 537 NTFS_A_DATA, NULL, 538 i * sizeof(ad), sizeof(ad), 539 &ad, NULL); 540 if (error) 541 goto out1; 542 j = 0; 543 do { 544 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 545 } while(ad.ad_name[j++]); 546 ntmp->ntm_ad[i].ad_namelen = j - 1; 547 ntmp->ntm_ad[i].ad_type = ad.ad_type; 548 } 549 550 vput(vp); 551 } 552 553 #if defined(__FreeBSD__) 554 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 555 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 556 #else 557 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 558 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 559 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 560 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 561 #endif 562 mp->mnt_flag |= MNT_LOCAL; 563 devvp->v_specmountpoint = mp; 564 return (0); 565 566 out1: 567 for(i=0;i<NTFS_SYSNODESNUM;i++) 568 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 569 570 if (vflush(mp,NULLVP,0)) 571 dprintf(("ntfs_mountfs: vflush failed\n")); 572 573 out: 574 devvp->v_specmountpoint = NULL; 575 if (bp) 576 brelse(bp); 577 578 if (error) { 579 if (ntmp) { 580 if (ntmp->ntm_ad) 581 free(ntmp->ntm_ad, M_NTFSMNT); 582 free(ntmp, M_NTFSMNT); 583 } 584 } 585 586 return (error); 587 } 588 589 static int 590 ntfs_start ( 591 struct mount *mp, 592 int flags, 593 struct lwp *l ) 594 { 595 return (0); 596 } 597 598 static int 599 ntfs_unmount( 600 struct mount *mp, 601 int mntflags, 602 struct lwp *l) 603 { 604 struct ntfsmount *ntmp; 605 int error, ronly = 0, flags, i; 606 607 dprintf(("ntfs_unmount: unmounting...\n")); 608 ntmp = VFSTONTFS(mp); 609 610 flags = 0; 611 if(mntflags & MNT_FORCE) 612 flags |= FORCECLOSE; 613 614 dprintf(("ntfs_unmount: vflushing...\n")); 615 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 616 if (error) { 617 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 618 return (error); 619 } 620 621 /* Check if only system vnodes are rest */ 622 for(i=0;i<NTFS_SYSNODESNUM;i++) 623 if((ntmp->ntm_sysvn[i]) && 624 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 625 626 /* Dereference all system vnodes */ 627 for(i=0;i<NTFS_SYSNODESNUM;i++) 628 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 629 630 /* vflush system vnodes */ 631 error = vflush(mp,NULLVP,flags); 632 if (error) { 633 /* XXX should this be panic() ? */ 634 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 635 } 636 637 /* Check if the type of device node isn't VBAD before 638 * touching v_specinfo. If the device vnode is revoked, the 639 * field is NULL and touching it causes null pointer derefercence. 640 */ 641 if (ntmp->ntm_devvp->v_type != VBAD) 642 ntmp->ntm_devvp->v_specmountpoint = NULL; 643 644 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 645 646 /* lock the device vnode before calling VOP_CLOSE() */ 647 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 648 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 649 NOCRED, l); 650 VOP_UNLOCK(ntmp->ntm_devvp, 0); 651 652 vrele(ntmp->ntm_devvp); 653 654 /* free the toupper table, if this has been last mounted ntfs volume */ 655 ntfs_toupper_unuse(); 656 657 dprintf(("ntfs_umount: freeing memory...\n")); 658 mp->mnt_data = NULL; 659 mp->mnt_flag &= ~MNT_LOCAL; 660 free(ntmp->ntm_ad, M_NTFSMNT); 661 FREE(ntmp, M_NTFSMNT); 662 return (error); 663 } 664 665 static int 666 ntfs_root( 667 struct mount *mp, 668 struct vnode **vpp) 669 { 670 struct vnode *nvp; 671 int error = 0; 672 673 dprintf(("ntfs_root(): sysvn: %p\n", 674 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 675 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 676 if(error) { 677 printf("ntfs_root: VFS_VGET failed: %d\n",error); 678 return (error); 679 } 680 681 *vpp = nvp; 682 return (0); 683 } 684 685 /* 686 * Do operations associated with quotas, not supported 687 */ 688 /* ARGSUSED */ 689 static int 690 ntfs_quotactl ( 691 struct mount *mp, 692 int cmds, 693 uid_t uid, 694 void *arg, 695 struct lwp *l) 696 { 697 698 return EOPNOTSUPP; 699 } 700 701 int 702 ntfs_calccfree( 703 struct ntfsmount *ntmp, 704 cn_t *cfreep) 705 { 706 struct vnode *vp; 707 u_int8_t *tmp; 708 int j, error; 709 cn_t cfree = 0; 710 size_t bmsize, i; 711 712 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 713 714 bmsize = VTOF(vp)->f_size; 715 716 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 717 718 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 719 0, bmsize, tmp, NULL); 720 if (error) 721 goto out; 722 723 for(i=0;i<bmsize;i++) 724 for(j=0;j<8;j++) 725 if(~tmp[i] & (1 << j)) cfree++; 726 *cfreep = cfree; 727 728 out: 729 free(tmp, M_TEMP); 730 return(error); 731 } 732 733 static int 734 ntfs_statvfs( 735 struct mount *mp, 736 struct statvfs *sbp, 737 struct lwp *l) 738 { 739 struct ntfsmount *ntmp = VFSTONTFS(mp); 740 u_int64_t mftallocated; 741 742 dprintf(("ntfs_statvfs():\n")); 743 744 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 745 746 #if defined(__FreeBSD__) 747 sbp->f_type = mp->mnt_vfc->vfc_typenum; 748 #endif 749 sbp->f_bsize = ntmp->ntm_bps; 750 sbp->f_frsize = sbp->f_bsize; /* XXX */ 751 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 752 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 753 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 754 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 755 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 756 sbp->f_ffree; 757 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 758 sbp->f_flag = mp->mnt_flag; 759 copy_statvfs_info(sbp, mp); 760 return (0); 761 } 762 763 static int 764 ntfs_sync ( 765 struct mount *mp, 766 int waitfor, 767 struct ucred *cred, 768 struct lwp *l) 769 { 770 /*dprintf(("ntfs_sync():\n"));*/ 771 return (0); 772 } 773 774 /*ARGSUSED*/ 775 static int 776 ntfs_fhtovp( 777 #if defined(__FreeBSD__) 778 struct mount *mp, 779 struct fid *fhp, 780 struct sockaddr *nam, 781 struct vnode **vpp, 782 int *exflagsp, 783 struct ucred **credanonp) 784 #elif defined(__NetBSD__) 785 struct mount *mp, 786 struct fid *fhp, 787 struct vnode **vpp) 788 #else 789 struct mount *mp, 790 struct fid *fhp, 791 struct mbuf *nam, 792 struct vnode **vpp, 793 int *exflagsp, 794 struct ucred **credanonp) 795 #endif 796 { 797 struct ntfid *ntfhp = (struct ntfid *)fhp; 798 int error; 799 800 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 801 (unsigned long long)ntfhp->ntfid_ino)); 802 803 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 804 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 805 if (error != 0) { 806 *vpp = NULLVP; 807 return (error); 808 } 809 810 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 811 * with NTFS, we don't need to check anything else for now */ 812 return (0); 813 } 814 815 static int 816 ntfs_vptofh( 817 struct vnode *vp, 818 struct fid *fhp) 819 { 820 struct ntnode *ntp; 821 struct ntfid *ntfhp; 822 struct fnode *fn; 823 824 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 825 vp)); 826 827 fn = VTOF(vp); 828 ntp = VTONT(vp); 829 ntfhp = (struct ntfid *)fhp; 830 ntfhp->ntfid_len = sizeof(struct ntfid); 831 ntfhp->ntfid_ino = ntp->i_number; 832 ntfhp->ntfid_attr = fn->f_attrtype; 833 #ifdef notyet 834 ntfhp->ntfid_gen = ntp->i_gen; 835 #endif 836 return (0); 837 } 838 839 int 840 ntfs_vgetex( 841 struct mount *mp, 842 ino_t ino, 843 u_int32_t attrtype, 844 char *attrname, 845 u_long lkflags, 846 u_long flags, 847 struct vnode **vpp) 848 { 849 int error; 850 struct ntfsmount *ntmp; 851 struct ntnode *ip; 852 struct fnode *fp; 853 struct vnode *vp; 854 enum vtype f_type = VBAD; 855 856 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 857 " 0x%lx\n", (unsigned long long)ino, attrtype, 858 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 859 860 ntmp = VFSTONTFS(mp); 861 *vpp = NULL; 862 863 /* Get ntnode */ 864 error = ntfs_ntlookup(ntmp, ino, &ip); 865 if (error) { 866 printf("ntfs_vget: ntfs_ntget failed\n"); 867 return (error); 868 } 869 870 /* It may be not initialized fully, so force load it */ 871 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 872 error = ntfs_loadntnode(ntmp, ip); 873 if(error) { 874 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 875 " %llu\n", (unsigned long long)ip->i_number); 876 ntfs_ntput(ip); 877 return (error); 878 } 879 } 880 881 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 882 if (error) { 883 printf("ntfs_vget: ntfs_fget failed\n"); 884 ntfs_ntput(ip); 885 return (error); 886 } 887 888 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 889 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 890 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 891 f_type = VDIR; 892 } else if (flags & VG_EXT) { 893 f_type = VNON; 894 fp->f_size = fp->f_allocated = 0; 895 } else { 896 f_type = VREG; 897 898 error = ntfs_filesize(ntmp, fp, 899 &fp->f_size, &fp->f_allocated); 900 if (error) { 901 ntfs_ntput(ip); 902 return (error); 903 } 904 } 905 906 fp->f_flag |= FN_VALID; 907 } 908 909 /* 910 * We may be calling vget() now. To avoid potential deadlock, we need 911 * to release ntnode lock, since due to locking order vnode 912 * lock has to be acquired first. 913 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 914 * prematurely. 915 */ 916 ntfs_ntput(ip); 917 918 if (FTOV(fp)) { 919 /* vget() returns error if the vnode has been recycled */ 920 if (vget(FTOV(fp), lkflags) == 0) { 921 *vpp = FTOV(fp); 922 return (0); 923 } 924 } 925 926 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 927 if(error) { 928 ntfs_frele(fp); 929 ntfs_ntput(ip); 930 return (error); 931 } 932 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 933 (unsigned long long)ino)); 934 935 #ifdef __FreeBSD__ 936 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 937 #endif 938 fp->f_vp = vp; 939 vp->v_data = fp; 940 if (f_type != VBAD) 941 vp->v_type = f_type; 942 943 if (ino == NTFS_ROOTINO) 944 vp->v_flag |= VROOT; 945 946 if (lkflags & LK_TYPE_MASK) { 947 error = vn_lock(vp, lkflags); 948 if (error) { 949 vput(vp); 950 return (error); 951 } 952 } 953 954 genfs_node_init(vp, &ntfs_genfsops); 955 VREF(ip->i_devvp); 956 *vpp = vp; 957 return (0); 958 } 959 960 static int 961 ntfs_vget( 962 struct mount *mp, 963 ino_t ino, 964 struct vnode **vpp) 965 { 966 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 967 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 968 } 969 970 #if defined(__FreeBSD__) 971 static struct vfsops ntfs_vfsops = { 972 ntfs_mount, 973 ntfs_start, 974 ntfs_unmount, 975 ntfs_root, 976 ntfs_quotactl, 977 ntfs_statvfs, 978 ntfs_sync, 979 ntfs_vget, 980 ntfs_fhtovp, 981 ntfs_vptofh, 982 ntfs_init, 983 NULL 984 }; 985 VFS_SET(ntfs_vfsops, ntfs, 0); 986 #elif defined(__NetBSD__) 987 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 988 989 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 990 &ntfs_vnodeop_opv_desc, 991 NULL, 992 }; 993 994 struct vfsops ntfs_vfsops = { 995 MOUNT_NTFS, 996 ntfs_mount, 997 ntfs_start, 998 ntfs_unmount, 999 ntfs_root, 1000 ntfs_quotactl, 1001 ntfs_statvfs, 1002 ntfs_sync, 1003 ntfs_vget, 1004 ntfs_fhtovp, 1005 ntfs_vptofh, 1006 ntfs_init, 1007 ntfs_reinit, 1008 ntfs_done, 1009 ntfs_mountroot, 1010 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1011 vfs_stdextattrctl, 1012 ntfs_vnodeopv_descs, 1013 }; 1014 VFS_ATTACH(ntfs_vfsops); 1015 #endif 1016
Indexes created Thu Sep 25 16:09:42 GMT 2025