ntfs_vfsops.c revision 1.50
1 /* $NetBSD: ntfs_vfsops.c,v 1.50 2007/06/30 09:37:56 pooka 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 1.50 2007/06/30 09:37:56 pooka 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 #include <sys/kauth.h> 48 49 #if defined(__NetBSD__) 50 #include <uvm/uvm_extern.h> 51 #else 52 #include <vm/vm.h> 53 #endif 54 55 #include <miscfs/specfs/specdev.h> 56 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_JUSTDEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 65 MALLOC_JUSTDEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 66 MALLOC_JUSTDEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 67 MALLOC_JUSTDEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 68 69 #if defined(__FreeBSD__) 70 static int ntfs_mount(struct mount *, char *, void *, 71 struct nameidata *, struct proc *); 72 #else 73 static int ntfs_mount(struct mount *, const char *, void *, 74 struct nameidata *, struct lwp *); 75 #endif 76 static int ntfs_quotactl(struct mount *, int, uid_t, void *, 77 struct lwp *); 78 static int ntfs_root(struct mount *, struct vnode **); 79 static int ntfs_start(struct mount *, int, struct lwp *); 80 static int ntfs_statvfs(struct mount *, struct statvfs *, 81 struct lwp *); 82 static int ntfs_sync(struct mount *, int, kauth_cred_t, 83 struct lwp *); 84 static int ntfs_unmount(struct mount *, int, struct lwp *); 85 static int ntfs_vget(struct mount *mp, ino_t ino, 86 struct vnode **vpp); 87 static int ntfs_mountfs(struct vnode *, struct mount *, 88 struct ntfs_args *, struct lwp *); 89 static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); 90 91 #if defined(__FreeBSD__) 92 static int ntfs_init(struct vfsconf *); 93 static int ntfs_fhtovp(struct mount *, struct fid *, 94 struct sockaddr *, struct vnode **, 95 int *, struct ucred **); 96 #elif defined(__NetBSD__) 97 static void ntfs_init(void); 98 static void ntfs_reinit(void); 99 static void ntfs_done(void); 100 static int ntfs_fhtovp(struct mount *, struct fid *, 101 struct vnode **); 102 static int ntfs_mountroot(void); 103 #else 104 static int ntfs_init(void); 105 static int ntfs_fhtovp(struct mount *, struct fid *, 106 struct mbuf *, struct vnode **, 107 int *, kauth_cred_t *); 108 #endif 109 110 static const struct genfs_ops ntfs_genfsops = { 111 .gop_write = genfs_compat_gop_write, 112 }; 113 114 #ifdef __NetBSD__ 115 116 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 117 { 118 119 sysctl_createv(clog, 0, NULL, NULL, 120 CTLFLAG_PERMANENT, 121 CTLTYPE_NODE, "vfs", NULL, 122 NULL, 0, NULL, 0, 123 CTL_VFS, CTL_EOL); 124 sysctl_createv(clog, 0, NULL, NULL, 125 CTLFLAG_PERMANENT, 126 CTLTYPE_NODE, "ntfs", 127 SYSCTL_DESCR("NTFS file system"), 128 NULL, 0, NULL, 0, 129 CTL_VFS, 20, CTL_EOL); 130 /* 131 * XXX the "20" above could be dynamic, thereby eliminating 132 * one more instance of the "number to vfs" mapping problem, 133 * but "20" is the order as taken from sys/mount.h 134 */ 135 } 136 137 static int 138 ntfs_mountroot() 139 { 140 struct mount *mp; 141 struct lwp *l = curlwp; /* XXX */ 142 int error; 143 struct ntfs_args args; 144 145 if (device_class(root_device) != DV_DISK) 146 return (ENODEV); 147 148 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 149 vrele(rootvp); 150 return (error); 151 } 152 153 args.flag = 0; 154 args.uid = 0; 155 args.gid = 0; 156 args.mode = 0777; 157 158 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 159 mp->mnt_op->vfs_refcount--; 160 vfs_unbusy(mp); 161 free(mp, M_MOUNT); 162 return (error); 163 } 164 165 simple_lock(&mountlist_slock); 166 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 167 simple_unlock(&mountlist_slock); 168 (void)ntfs_statvfs(mp, &mp->mnt_stat, l); 169 vfs_unbusy(mp); 170 return (0); 171 } 172 173 static void 174 ntfs_init() 175 { 176 177 malloc_type_attach(M_NTFSMNT); 178 malloc_type_attach(M_NTFSNTNODE); 179 malloc_type_attach(M_NTFSFNODE); 180 malloc_type_attach(M_NTFSDIR); 181 malloc_type_attach(M_NTFSNTHASH); 182 malloc_type_attach(M_NTFSNTVATTR); 183 malloc_type_attach(M_NTFSRDATA); 184 malloc_type_attach(M_NTFSDECOMP); 185 malloc_type_attach(M_NTFSRUN); 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 malloc_type_detach(M_NTFSMNT); 201 malloc_type_detach(M_NTFSNTNODE); 202 malloc_type_detach(M_NTFSFNODE); 203 malloc_type_detach(M_NTFSDIR); 204 malloc_type_detach(M_NTFSNTHASH); 205 malloc_type_detach(M_NTFSNTVATTR); 206 malloc_type_detach(M_NTFSRDATA); 207 malloc_type_detach(M_NTFSDECOMP); 208 malloc_type_detach(M_NTFSRUN); 209 } 210 211 #elif defined(__FreeBSD__) 212 213 static int 214 ntfs_init ( 215 struct vfsconf *vcp ) 216 { 217 ntfs_nthashinit(); 218 ntfs_toupper_init(); 219 return 0; 220 } 221 222 #endif /* NetBSD */ 223 224 static int 225 ntfs_mount ( 226 struct mount *mp, 227 #if defined(__FreeBSD__) 228 char *path, 229 void *data, 230 #else 231 const char *path, 232 void *data, 233 #endif 234 struct nameidata *ndp, 235 #if defined(__FreeBSD__) 236 struct proc *p ) 237 #else 238 struct lwp *l ) 239 #endif 240 { 241 int err = 0, flags; 242 struct vnode *devvp; 243 struct ntfs_args args; 244 245 if (mp->mnt_flag & MNT_GETARGS) { 246 struct ntfsmount *ntmp = VFSTONTFS(mp); 247 if (ntmp == NULL) 248 return EIO; 249 args.fspec = NULL; 250 args.uid = ntmp->ntm_uid; 251 args.gid = ntmp->ntm_gid; 252 args.mode = ntmp->ntm_mode; 253 args.flag = ntmp->ntm_flag; 254 return copyout(&args, data, sizeof(args)); 255 } 256 /* 257 *** 258 * Mounting non-root file system or updating a file system 259 *** 260 */ 261 262 /* copy in user arguments*/ 263 err = copyin(data, &args, sizeof (struct ntfs_args)); 264 if (err) 265 return (err); /* can't get arguments*/ 266 267 /* 268 * If updating, check whether changing from read-only to 269 * read/write; if there is no device name, that's all we do. 270 */ 271 if (mp->mnt_flag & MNT_UPDATE) { 272 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 273 return (EINVAL); 274 } 275 276 /* 277 * Not an update, or updating the name: look up the name 278 * and verify that it refers to a sensible block device. 279 */ 280 #ifdef __FreeBSD__ 281 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 282 #else 283 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 284 #endif 285 err = namei(ndp); 286 if (err) { 287 /* can't get devvp!*/ 288 return (err); 289 } 290 291 devvp = ndp->ni_vp; 292 293 if (devvp->v_type != VBLK) { 294 err = ENOTBLK; 295 goto fail; 296 } 297 #ifdef __FreeBSD__ 298 if (bdevsw(devvp->v_rdev) == NULL) { 299 #else 300 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 301 #endif 302 err = ENXIO; 303 goto fail; 304 } 305 if (mp->mnt_flag & MNT_UPDATE) { 306 #if 0 307 /* 308 ******************** 309 * UPDATE 310 ******************** 311 */ 312 313 if (devvp != ntmp->um_devvp) { 314 err = EINVAL; /* needs translation */ 315 goto fail; 316 } 317 318 /* 319 * Update device name only on success 320 */ 321 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 322 UIO_USERSPACE, mp, p); 323 if (err) 324 goto fail; 325 326 vrele(devvp); 327 #endif 328 } else { 329 /* 330 ******************** 331 * NEW MOUNT 332 ******************** 333 */ 334 335 /* 336 * Since this is a new mount, we want the names for 337 * the device and the mount point copied in. If an 338 * error occurs, the mountpoint is discarded by the 339 * upper level code. 340 */ 341 342 /* Save "last mounted on" info for mount point (NULL pad)*/ 343 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 344 UIO_USERSPACE, mp, l); 345 if (err) 346 goto fail; 347 348 /* 349 * Disallow multiple mounts of the same device. 350 * Disallow mounting of a device that is currently in use 351 * (except for root, which might share swap device for 352 * miniroot). 353 */ 354 err = vfs_mountedon(devvp); 355 if (err) 356 goto fail; 357 if (vcount(devvp) > 1 && devvp != rootvp) { 358 err = EBUSY; 359 goto fail; 360 } 361 if (mp->mnt_flag & MNT_RDONLY) 362 flags = FREAD; 363 else 364 flags = FREAD|FWRITE; 365 err = VOP_OPEN(devvp, flags, FSCRED, l); 366 if (err) 367 goto fail; 368 err = ntfs_mountfs(devvp, mp, &args, l); 369 if (err) { 370 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 371 (void)VOP_CLOSE(devvp, flags, NOCRED, l); 372 VOP_UNLOCK(devvp, 0); 373 goto fail; 374 } 375 } 376 377 #ifdef __FreeBSD__ 378 dostatvfs: 379 #endif 380 /* 381 * Initialize FS stat information in mount struct; uses both 382 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 383 * 384 * This code is common to root and non-root mounts 385 */ 386 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 387 return (err); 388 389 fail: 390 vrele(devvp); 391 return (err); 392 } 393 394 /* 395 * Common code for mount and mountroot 396 */ 397 int 398 ntfs_mountfs(devvp, mp, argsp, l) 399 struct vnode *devvp; 400 struct mount *mp; 401 struct ntfs_args *argsp; 402 struct lwp *l; 403 { 404 struct buf *bp; 405 struct ntfsmount *ntmp; 406 dev_t dev = devvp->v_rdev; 407 int error, ronly, i; 408 struct vnode *vp; 409 410 ntmp = NULL; 411 412 /* 413 * Flush out any old buffers remaining from a previous use. 414 */ 415 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 416 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 417 VOP_UNLOCK(devvp, 0); 418 if (error) 419 return (error); 420 421 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 422 423 bp = NULL; 424 425 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 426 if (error) 427 goto out; 428 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 429 bzero( ntmp, sizeof *ntmp ); 430 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 431 brelse( bp ); 432 bp = NULL; 433 434 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 435 error = EINVAL; 436 dprintf(("ntfs_mountfs: invalid boot block\n")); 437 goto out; 438 } 439 440 { 441 int8_t cpr = ntmp->ntm_mftrecsz; 442 if( cpr > 0 ) 443 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 444 else 445 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 446 } 447 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 448 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 449 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 450 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 451 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 452 453 ntmp->ntm_mountp = mp; 454 ntmp->ntm_dev = dev; 455 ntmp->ntm_devvp = devvp; 456 ntmp->ntm_uid = argsp->uid; 457 ntmp->ntm_gid = argsp->gid; 458 ntmp->ntm_mode = argsp->mode; 459 ntmp->ntm_flag = argsp->flag; 460 mp->mnt_data = ntmp; 461 462 /* set file name encode/decode hooks XXX utf-8 only for now */ 463 ntmp->ntm_wget = ntfs_utf8_wget; 464 ntmp->ntm_wput = ntfs_utf8_wput; 465 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 466 467 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 468 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 469 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 470 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 471 472 /* 473 * We read in some system nodes to do not allow 474 * reclaim them and to have everytime access to them. 475 */ 476 { 477 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 478 for (i=0; i<3; i++) { 479 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 480 if(error) 481 goto out1; 482 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 483 VREF(ntmp->ntm_sysvn[pi[i]]); 484 vput(ntmp->ntm_sysvn[pi[i]]); 485 } 486 } 487 488 /* read the Unicode lowercase --> uppercase translation table, 489 * if necessary */ 490 if ((error = ntfs_toupper_use(mp, ntmp))) 491 goto out1; 492 493 /* 494 * Scan $BitMap and count free clusters 495 */ 496 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 497 if(error) 498 goto out1; 499 500 /* 501 * Read and translate to internal format attribute 502 * definition file. 503 */ 504 { 505 int num,j; 506 struct attrdef ad; 507 508 /* Open $AttrDef */ 509 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 510 if(error) 511 goto out1; 512 513 /* Count valid entries */ 514 for(num=0;;num++) { 515 error = ntfs_readattr(ntmp, VTONT(vp), 516 NTFS_A_DATA, NULL, 517 num * sizeof(ad), sizeof(ad), 518 &ad, NULL); 519 if (error) 520 goto out1; 521 if (ad.ad_name[0] == 0) 522 break; 523 } 524 525 /* Alloc memory for attribute definitions */ 526 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 527 num * sizeof(struct ntvattrdef), 528 M_NTFSMNT, M_WAITOK); 529 530 ntmp->ntm_adnum = num; 531 532 /* Read them and translate */ 533 for(i=0;i<num;i++){ 534 error = ntfs_readattr(ntmp, VTONT(vp), 535 NTFS_A_DATA, NULL, 536 i * sizeof(ad), sizeof(ad), 537 &ad, NULL); 538 if (error) 539 goto out1; 540 j = 0; 541 do { 542 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 543 } while(ad.ad_name[j++]); 544 ntmp->ntm_ad[i].ad_namelen = j - 1; 545 ntmp->ntm_ad[i].ad_type = ad.ad_type; 546 } 547 548 vput(vp); 549 } 550 551 #if defined(__FreeBSD__) 552 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 553 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 554 #else 555 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 556 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 557 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 558 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 559 #endif 560 mp->mnt_flag |= MNT_LOCAL; 561 devvp->v_specmountpoint = mp; 562 return (0); 563 564 out1: 565 for(i=0;i<NTFS_SYSNODESNUM;i++) 566 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 567 568 if (vflush(mp,NULLVP,0)) { 569 dprintf(("ntfs_mountfs: vflush failed\n")); 570 } 571 out: 572 devvp->v_specmountpoint = NULL; 573 if (bp) 574 brelse(bp); 575 576 if (error) { 577 if (ntmp) { 578 if (ntmp->ntm_ad) 579 free(ntmp->ntm_ad, M_NTFSMNT); 580 free(ntmp, M_NTFSMNT); 581 } 582 } 583 584 return (error); 585 } 586 587 static int 588 ntfs_start ( 589 struct mount *mp, 590 int flags, 591 struct lwp *l) 592 { 593 return (0); 594 } 595 596 static int 597 ntfs_unmount( 598 struct mount *mp, 599 int mntflags, 600 struct lwp *l) 601 { 602 struct ntfsmount *ntmp; 603 int error, ronly = 0, flags, i; 604 605 dprintf(("ntfs_unmount: unmounting...\n")); 606 ntmp = VFSTONTFS(mp); 607 608 flags = 0; 609 if(mntflags & MNT_FORCE) 610 flags |= FORCECLOSE; 611 612 dprintf(("ntfs_unmount: vflushing...\n")); 613 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 614 if (error) { 615 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 616 return (error); 617 } 618 619 /* Check if only system vnodes are rest */ 620 for(i=0;i<NTFS_SYSNODESNUM;i++) 621 if((ntmp->ntm_sysvn[i]) && 622 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 623 624 /* Dereference all system vnodes */ 625 for(i=0;i<NTFS_SYSNODESNUM;i++) 626 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 627 628 /* vflush system vnodes */ 629 error = vflush(mp,NULLVP,flags); 630 if (error) { 631 /* XXX should this be panic() ? */ 632 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 633 } 634 635 /* Check if the type of device node isn't VBAD before 636 * touching v_specinfo. If the device vnode is revoked, the 637 * field is NULL and touching it causes null pointer derefercence. 638 */ 639 if (ntmp->ntm_devvp->v_type != VBAD) 640 ntmp->ntm_devvp->v_specmountpoint = NULL; 641 642 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 643 644 /* lock the device vnode before calling VOP_CLOSE() */ 645 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 646 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 647 NOCRED, l); 648 VOP_UNLOCK(ntmp->ntm_devvp, 0); 649 650 vrele(ntmp->ntm_devvp); 651 652 /* free the toupper table, if this has been last mounted ntfs volume */ 653 ntfs_toupper_unuse(); 654 655 dprintf(("ntfs_umount: freeing memory...\n")); 656 mp->mnt_data = NULL; 657 mp->mnt_flag &= ~MNT_LOCAL; 658 free(ntmp->ntm_ad, M_NTFSMNT); 659 FREE(ntmp, M_NTFSMNT); 660 return (error); 661 } 662 663 static int 664 ntfs_root( 665 struct mount *mp, 666 struct vnode **vpp) 667 { 668 struct vnode *nvp; 669 int error = 0; 670 671 dprintf(("ntfs_root(): sysvn: %p\n", 672 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 673 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 674 if(error) { 675 printf("ntfs_root: VFS_VGET failed: %d\n",error); 676 return (error); 677 } 678 679 *vpp = nvp; 680 return (0); 681 } 682 683 /* 684 * Do operations associated with quotas, not supported 685 */ 686 /* ARGSUSED */ 687 static int 688 ntfs_quotactl ( 689 struct mount *mp, 690 int cmds, 691 uid_t uid, 692 void *arg, 693 struct lwp *l) 694 { 695 696 return EOPNOTSUPP; 697 } 698 699 int 700 ntfs_calccfree( 701 struct ntfsmount *ntmp, 702 cn_t *cfreep) 703 { 704 struct vnode *vp; 705 u_int8_t *tmp; 706 int j, error; 707 cn_t cfree = 0; 708 size_t bmsize, i; 709 710 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 711 712 bmsize = VTOF(vp)->f_size; 713 714 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 715 716 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 717 0, bmsize, tmp, NULL); 718 if (error) 719 goto out; 720 721 for(i=0;i<bmsize;i++) 722 for(j=0;j<8;j++) 723 if(~tmp[i] & (1 << j)) cfree++; 724 *cfreep = cfree; 725 726 out: 727 free(tmp, M_TEMP); 728 return(error); 729 } 730 731 static int 732 ntfs_statvfs( 733 struct mount *mp, 734 struct statvfs *sbp, 735 struct lwp *l) 736 { 737 struct ntfsmount *ntmp = VFSTONTFS(mp); 738 u_int64_t mftallocated; 739 740 dprintf(("ntfs_statvfs():\n")); 741 742 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 743 744 #if defined(__FreeBSD__) 745 sbp->f_type = mp->mnt_vfc->vfc_typenum; 746 #endif 747 sbp->f_bsize = ntmp->ntm_bps; 748 sbp->f_frsize = sbp->f_bsize; /* XXX */ 749 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 750 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 751 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 752 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 753 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 754 sbp->f_ffree; 755 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 756 sbp->f_flag = mp->mnt_flag; 757 copy_statvfs_info(sbp, mp); 758 return (0); 759 } 760 761 static int 762 ntfs_sync ( 763 struct mount *mp, 764 int waitfor, 765 kauth_cred_t cred, 766 struct lwp *l) 767 { 768 /*dprintf(("ntfs_sync():\n"));*/ 769 return (0); 770 } 771 772 /*ARGSUSED*/ 773 static int 774 ntfs_fhtovp( 775 #if defined(__FreeBSD__) 776 struct mount *mp, 777 struct fid *fhp, 778 struct sockaddr *nam, 779 struct vnode **vpp, 780 int *exflagsp, 781 struct ucred **credanonp) 782 #elif defined(__NetBSD__) 783 struct mount *mp, 784 struct fid *fhp, 785 struct vnode **vpp) 786 #else 787 struct mount *mp, 788 struct fid *fhp, 789 struct mbuf *nam, 790 struct vnode **vpp, 791 int *exflagsp, 792 struct ucred **credanonp) 793 #endif 794 { 795 struct ntfid ntfh; 796 int error; 797 798 if (fhp->fid_len != sizeof(struct ntfid)) 799 return EINVAL; 800 memcpy(&ntfh, fhp, sizeof(ntfh)); 801 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 802 (unsigned long long)ntfh.ntfid_ino)); 803 804 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 805 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 806 if (error != 0) { 807 *vpp = NULLVP; 808 return (error); 809 } 810 811 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 812 * with NTFS, we don't need to check anything else for now */ 813 return (0); 814 } 815 816 static int 817 ntfs_vptofh( 818 struct vnode *vp, 819 struct fid *fhp, 820 size_t *fh_size) 821 { 822 struct ntnode *ntp; 823 struct ntfid ntfh; 824 struct fnode *fn; 825 826 if (*fh_size < sizeof(struct ntfid)) { 827 *fh_size = sizeof(struct ntfid); 828 return E2BIG; 829 } 830 *fh_size = sizeof(struct ntfid); 831 832 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 833 vp)); 834 835 fn = VTOF(vp); 836 ntp = VTONT(vp); 837 memset(&ntfh, 0, sizeof(ntfh)); 838 ntfh.ntfid_len = sizeof(struct ntfid); 839 ntfh.ntfid_ino = ntp->i_number; 840 ntfh.ntfid_attr = fn->f_attrtype; 841 #ifdef notyet 842 ntfh.ntfid_gen = ntp->i_gen; 843 #endif 844 memcpy(fhp, &ntfh, sizeof(ntfh)); 845 return (0); 846 } 847 848 int 849 ntfs_vgetex( 850 struct mount *mp, 851 ino_t ino, 852 u_int32_t attrtype, 853 char *attrname, 854 u_long lkflags, 855 u_long flags, 856 struct vnode **vpp) 857 { 858 int error; 859 struct ntfsmount *ntmp; 860 struct ntnode *ip; 861 struct fnode *fp; 862 struct vnode *vp; 863 enum vtype f_type = VBAD; 864 865 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 866 " 0x%lx\n", (unsigned long long)ino, attrtype, 867 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 868 869 ntmp = VFSTONTFS(mp); 870 *vpp = NULL; 871 872 /* Get ntnode */ 873 error = ntfs_ntlookup(ntmp, ino, &ip); 874 if (error) { 875 printf("ntfs_vget: ntfs_ntget failed\n"); 876 return (error); 877 } 878 879 /* It may be not initialized fully, so force load it */ 880 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 881 error = ntfs_loadntnode(ntmp, ip); 882 if(error) { 883 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 884 " %llu\n", (unsigned long long)ip->i_number); 885 ntfs_ntput(ip); 886 return (error); 887 } 888 } 889 890 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 891 if (error) { 892 printf("ntfs_vget: ntfs_fget failed\n"); 893 ntfs_ntput(ip); 894 return (error); 895 } 896 897 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 898 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 899 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 900 f_type = VDIR; 901 } else if (flags & VG_EXT) { 902 f_type = VNON; 903 fp->f_size = fp->f_allocated = 0; 904 } else { 905 f_type = VREG; 906 907 error = ntfs_filesize(ntmp, fp, 908 &fp->f_size, &fp->f_allocated); 909 if (error) { 910 ntfs_ntput(ip); 911 return (error); 912 } 913 } 914 915 fp->f_flag |= FN_VALID; 916 } 917 918 /* 919 * We may be calling vget() now. To avoid potential deadlock, we need 920 * to release ntnode lock, since due to locking order vnode 921 * lock has to be acquired first. 922 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 923 * prematurely. 924 */ 925 ntfs_ntput(ip); 926 927 if (FTOV(fp)) { 928 /* vget() returns error if the vnode has been recycled */ 929 if (vget(FTOV(fp), lkflags) == 0) { 930 *vpp = FTOV(fp); 931 return (0); 932 } 933 } 934 935 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 936 if(error) { 937 ntfs_frele(fp); 938 ntfs_ntput(ip); 939 return (error); 940 } 941 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 942 (unsigned long long)ino)); 943 944 #ifdef __FreeBSD__ 945 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 946 #endif 947 fp->f_vp = vp; 948 vp->v_data = fp; 949 if (f_type != VBAD) 950 vp->v_type = f_type; 951 952 if (ino == NTFS_ROOTINO) 953 vp->v_flag |= VROOT; 954 955 if (lkflags & LK_TYPE_MASK) { 956 error = vn_lock(vp, lkflags); 957 if (error) { 958 vput(vp); 959 return (error); 960 } 961 } 962 963 genfs_node_init(vp, &ntfs_genfsops); 964 VREF(ip->i_devvp); 965 *vpp = vp; 966 return (0); 967 } 968 969 static int 970 ntfs_vget( 971 struct mount *mp, 972 ino_t ino, 973 struct vnode **vpp) 974 { 975 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 976 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 977 } 978 979 #if defined(__FreeBSD__) 980 static struct vfsops ntfs_vfsops = { 981 ntfs_mount, 982 ntfs_start, 983 ntfs_unmount, 984 ntfs_root, 985 ntfs_quotactl, 986 ntfs_statvfs, 987 ntfs_sync, 988 ntfs_vget, 989 ntfs_fhtovp, 990 ntfs_vptofh, 991 ntfs_init, 992 NULL 993 }; 994 VFS_SET(ntfs_vfsops, ntfs, 0); 995 #elif defined(__NetBSD__) 996 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 997 998 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 999 &ntfs_vnodeop_opv_desc, 1000 NULL, 1001 }; 1002 1003 struct vfsops ntfs_vfsops = { 1004 MOUNT_NTFS, 1005 ntfs_mount, 1006 ntfs_start, 1007 ntfs_unmount, 1008 ntfs_root, 1009 ntfs_quotactl, 1010 ntfs_statvfs, 1011 ntfs_sync, 1012 ntfs_vget, 1013 ntfs_fhtovp, 1014 ntfs_vptofh, 1015 ntfs_init, 1016 ntfs_reinit, 1017 ntfs_done, 1018 ntfs_mountroot, 1019 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1020 vfs_stdextattrctl, 1021 vfs_stdsuspendctl, 1022 ntfs_vnodeopv_descs, 1023 0, 1024 { NULL, NULL }, 1025 }; 1026 VFS_ATTACH(ntfs_vfsops); 1027 #endif 1028
Indexes created Tue Sep 23 14:10:03 GMT 2025