ntfs_vfsops.c revision 1.56
1 /* $NetBSD: ntfs_vfsops.c,v 1.56 2007/07/31 21:14:18 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 1.56 2007/07/31 21:14:18 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 *, size_t *, 74 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 struct nameidata *ndp, 231 struct proc *p ) 232 #else 233 const char *path, 234 void *data, 235 size_t *data_len, 236 struct lwp *l ) 237 #endif 238 { 239 struct nameidata nd; 240 #ifdef __NetBSD__ 241 struct nameidata *ndp = &nd; 242 #endif 243 int err = 0, flags; 244 struct vnode *devvp; 245 #if defined(__FreeBSD__) 246 struct ntfs_args *args = args_buf; 247 #else 248 struct ntfs_args *args = data; 249 250 if (*data_len < sizeof *args) 251 return EINVAL; 252 #endif 253 254 if (mp->mnt_flag & MNT_GETARGS) { 255 struct ntfsmount *ntmp = VFSTONTFS(mp); 256 if (ntmp == NULL) 257 return EIO; 258 args->fspec = NULL; 259 args->uid = ntmp->ntm_uid; 260 args->gid = ntmp->ntm_gid; 261 args->mode = ntmp->ntm_mode; 262 args->flag = ntmp->ntm_flag; 263 #if defined(__FreeBSD__) 264 return copyout(args, data, sizeof(args)); 265 #else 266 *data_len = sizeof *args; 267 return 0; 268 #endif 269 } 270 /* 271 *** 272 * Mounting non-root file system or updating a file system 273 *** 274 */ 275 276 #if defined(__FreeBSD__) 277 /* copy in user arguments*/ 278 err = copyin(data, args, sizeof (struct ntfs_args)); 279 if (err) 280 return (err); /* can't get arguments*/ 281 #endif 282 283 /* 284 * If updating, check whether changing from read-only to 285 * read/write; if there is no device name, that's all we do. 286 */ 287 if (mp->mnt_flag & MNT_UPDATE) { 288 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 289 return (EINVAL); 290 } 291 292 /* 293 * Not an update, or updating the name: look up the name 294 * and verify that it refers to a sensible block device. 295 */ 296 #ifdef __FreeBSD__ 297 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec, p); 298 #else 299 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec, l); 300 #endif 301 err = namei(ndp); 302 if (err) { 303 /* can't get devvp!*/ 304 return (err); 305 } 306 307 devvp = ndp->ni_vp; 308 309 if (devvp->v_type != VBLK) { 310 err = ENOTBLK; 311 goto fail; 312 } 313 #ifdef __FreeBSD__ 314 if (bdevsw(devvp->v_rdev) == NULL) { 315 #else 316 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 317 #endif 318 err = ENXIO; 319 goto fail; 320 } 321 if (mp->mnt_flag & MNT_UPDATE) { 322 #if 0 323 /* 324 ******************** 325 * UPDATE 326 ******************** 327 */ 328 329 if (devvp != ntmp->um_devvp) { 330 err = EINVAL; /* needs translation */ 331 goto fail; 332 } 333 334 /* 335 * Update device name only on success 336 */ 337 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 338 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 339 if (err) 340 goto fail; 341 342 vrele(devvp); 343 #endif 344 } else { 345 /* 346 ******************** 347 * NEW MOUNT 348 ******************** 349 */ 350 351 /* 352 * Since this is a new mount, we want the names for 353 * the device and the mount point copied in. If an 354 * error occurs, the mountpoint is discarded by the 355 * upper level code. 356 */ 357 358 /* Save "last mounted on" info for mount point (NULL pad)*/ 359 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 360 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 361 if (err) 362 goto fail; 363 364 /* 365 * Disallow multiple mounts of the same device. 366 * Disallow mounting of a device that is currently in use 367 * (except for root, which might share swap device for 368 * miniroot). 369 */ 370 err = vfs_mountedon(devvp); 371 if (err) 372 goto fail; 373 if (vcount(devvp) > 1 && devvp != rootvp) { 374 err = EBUSY; 375 goto fail; 376 } 377 if (mp->mnt_flag & MNT_RDONLY) 378 flags = FREAD; 379 else 380 flags = FREAD|FWRITE; 381 err = VOP_OPEN(devvp, flags, FSCRED, l); 382 if (err) 383 goto fail; 384 err = ntfs_mountfs(devvp, mp, args, l); 385 if (err) { 386 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 387 (void)VOP_CLOSE(devvp, flags, NOCRED, l); 388 VOP_UNLOCK(devvp, 0); 389 goto fail; 390 } 391 } 392 393 #ifdef __FreeBSD__ 394 dostatvfs: 395 #endif 396 /* 397 * Initialize FS stat information in mount struct; uses both 398 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 399 * 400 * This code is common to root and non-root mounts 401 */ 402 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 403 return (err); 404 405 fail: 406 vrele(devvp); 407 return (err); 408 } 409 410 /* 411 * Common code for mount and mountroot 412 */ 413 int 414 ntfs_mountfs(devvp, mp, argsp, l) 415 struct vnode *devvp; 416 struct mount *mp; 417 struct ntfs_args *argsp; 418 struct lwp *l; 419 { 420 struct buf *bp; 421 struct ntfsmount *ntmp; 422 dev_t dev = devvp->v_rdev; 423 int error, ronly, i; 424 struct vnode *vp; 425 426 ntmp = NULL; 427 428 /* 429 * Flush out any old buffers remaining from a previous use. 430 */ 431 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 432 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 433 VOP_UNLOCK(devvp, 0); 434 if (error) 435 return (error); 436 437 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 438 439 bp = NULL; 440 441 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 442 if (error) 443 goto out; 444 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 445 bzero( ntmp, sizeof *ntmp ); 446 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 447 brelse( bp ); 448 bp = NULL; 449 450 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 451 error = EINVAL; 452 dprintf(("ntfs_mountfs: invalid boot block\n")); 453 goto out; 454 } 455 456 { 457 int8_t cpr = ntmp->ntm_mftrecsz; 458 if( cpr > 0 ) 459 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 460 else 461 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 462 } 463 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 464 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 465 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 466 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 467 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 468 469 ntmp->ntm_mountp = mp; 470 ntmp->ntm_dev = dev; 471 ntmp->ntm_devvp = devvp; 472 ntmp->ntm_uid = argsp->uid; 473 ntmp->ntm_gid = argsp->gid; 474 ntmp->ntm_mode = argsp->mode; 475 ntmp->ntm_flag = argsp->flag; 476 mp->mnt_data = ntmp; 477 478 /* set file name encode/decode hooks XXX utf-8 only for now */ 479 ntmp->ntm_wget = ntfs_utf8_wget; 480 ntmp->ntm_wput = ntfs_utf8_wput; 481 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 482 483 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 484 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 485 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 486 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 487 488 /* 489 * We read in some system nodes to do not allow 490 * reclaim them and to have everytime access to them. 491 */ 492 { 493 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 494 for (i=0; i<3; i++) { 495 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 496 if(error) 497 goto out1; 498 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 499 VREF(ntmp->ntm_sysvn[pi[i]]); 500 vput(ntmp->ntm_sysvn[pi[i]]); 501 } 502 } 503 504 /* read the Unicode lowercase --> uppercase translation table, 505 * if necessary */ 506 if ((error = ntfs_toupper_use(mp, ntmp))) 507 goto out1; 508 509 /* 510 * Scan $BitMap and count free clusters 511 */ 512 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 513 if(error) 514 goto out1; 515 516 /* 517 * Read and translate to internal format attribute 518 * definition file. 519 */ 520 { 521 int num,j; 522 struct attrdef ad; 523 524 /* Open $AttrDef */ 525 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 526 if(error) 527 goto out1; 528 529 /* Count valid entries */ 530 for(num=0;;num++) { 531 error = ntfs_readattr(ntmp, VTONT(vp), 532 NTFS_A_DATA, NULL, 533 num * sizeof(ad), sizeof(ad), 534 &ad, NULL); 535 if (error) 536 goto out1; 537 if (ad.ad_name[0] == 0) 538 break; 539 } 540 541 /* Alloc memory for attribute definitions */ 542 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 543 num * sizeof(struct ntvattrdef), 544 M_NTFSMNT, M_WAITOK); 545 546 ntmp->ntm_adnum = num; 547 548 /* Read them and translate */ 549 for(i=0;i<num;i++){ 550 error = ntfs_readattr(ntmp, VTONT(vp), 551 NTFS_A_DATA, NULL, 552 i * sizeof(ad), sizeof(ad), 553 &ad, NULL); 554 if (error) 555 goto out1; 556 j = 0; 557 do { 558 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 559 } while(ad.ad_name[j++]); 560 ntmp->ntm_ad[i].ad_namelen = j - 1; 561 ntmp->ntm_ad[i].ad_type = ad.ad_type; 562 } 563 564 vput(vp); 565 } 566 567 #if defined(__FreeBSD__) 568 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 569 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 570 #else 571 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 572 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 573 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 574 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 575 #endif 576 mp->mnt_flag |= MNT_LOCAL; 577 devvp->v_specmountpoint = mp; 578 return (0); 579 580 out1: 581 for(i=0;i<NTFS_SYSNODESNUM;i++) 582 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 583 584 if (vflush(mp,NULLVP,0)) { 585 dprintf(("ntfs_mountfs: vflush failed\n")); 586 } 587 out: 588 devvp->v_specmountpoint = NULL; 589 if (bp) 590 brelse(bp); 591 592 if (error) { 593 if (ntmp) { 594 if (ntmp->ntm_ad) 595 free(ntmp->ntm_ad, M_NTFSMNT); 596 free(ntmp, M_NTFSMNT); 597 } 598 } 599 600 return (error); 601 } 602 603 static int 604 ntfs_start ( 605 struct mount *mp, 606 int flags, 607 struct lwp *l) 608 { 609 return (0); 610 } 611 612 static int 613 ntfs_unmount( 614 struct mount *mp, 615 int mntflags, 616 struct lwp *l) 617 { 618 struct ntfsmount *ntmp; 619 int error, ronly = 0, flags, i; 620 621 dprintf(("ntfs_unmount: unmounting...\n")); 622 ntmp = VFSTONTFS(mp); 623 624 flags = 0; 625 if(mntflags & MNT_FORCE) 626 flags |= FORCECLOSE; 627 628 dprintf(("ntfs_unmount: vflushing...\n")); 629 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 630 if (error) { 631 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 632 return (error); 633 } 634 635 /* Check if only system vnodes are rest */ 636 for(i=0;i<NTFS_SYSNODESNUM;i++) 637 if((ntmp->ntm_sysvn[i]) && 638 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 639 640 /* Dereference all system vnodes */ 641 for(i=0;i<NTFS_SYSNODESNUM;i++) 642 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 643 644 /* vflush system vnodes */ 645 error = vflush(mp,NULLVP,flags); 646 if (error) { 647 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 648 } 649 650 /* Check if the type of device node isn't VBAD before 651 * touching v_specinfo. If the device vnode is revoked, the 652 * field is NULL and touching it causes null pointer derefercence. 653 */ 654 if (ntmp->ntm_devvp->v_type != VBAD) 655 ntmp->ntm_devvp->v_specmountpoint = NULL; 656 657 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 658 659 /* lock the device vnode before calling VOP_CLOSE() */ 660 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 661 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 662 NOCRED, l); 663 KASSERT(error == 0); 664 VOP_UNLOCK(ntmp->ntm_devvp, 0); 665 666 vrele(ntmp->ntm_devvp); 667 668 /* free the toupper table, if this has been last mounted ntfs volume */ 669 ntfs_toupper_unuse(); 670 671 dprintf(("ntfs_umount: freeing memory...\n")); 672 mp->mnt_data = NULL; 673 mp->mnt_flag &= ~MNT_LOCAL; 674 free(ntmp->ntm_ad, M_NTFSMNT); 675 FREE(ntmp, M_NTFSMNT); 676 return (0); 677 } 678 679 static int 680 ntfs_root( 681 struct mount *mp, 682 struct vnode **vpp) 683 { 684 struct vnode *nvp; 685 int error = 0; 686 687 dprintf(("ntfs_root(): sysvn: %p\n", 688 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 689 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 690 if(error) { 691 printf("ntfs_root: VFS_VGET failed: %d\n",error); 692 return (error); 693 } 694 695 *vpp = nvp; 696 return (0); 697 } 698 699 /* 700 * Do operations associated with quotas, not supported 701 */ 702 /* ARGSUSED */ 703 static int 704 ntfs_quotactl ( 705 struct mount *mp, 706 int cmds, 707 uid_t uid, 708 void *arg, 709 struct lwp *l) 710 { 711 712 return EOPNOTSUPP; 713 } 714 715 int 716 ntfs_calccfree( 717 struct ntfsmount *ntmp, 718 cn_t *cfreep) 719 { 720 struct vnode *vp; 721 u_int8_t *tmp; 722 int j, error; 723 cn_t cfree = 0; 724 size_t bmsize, i; 725 726 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 727 728 bmsize = VTOF(vp)->f_size; 729 730 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 731 732 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 733 0, bmsize, tmp, NULL); 734 if (error) 735 goto out; 736 737 for(i=0;i<bmsize;i++) 738 for(j=0;j<8;j++) 739 if(~tmp[i] & (1 << j)) cfree++; 740 *cfreep = cfree; 741 742 out: 743 free(tmp, M_TEMP); 744 return(error); 745 } 746 747 static int 748 ntfs_statvfs( 749 struct mount *mp, 750 struct statvfs *sbp, 751 struct lwp *l) 752 { 753 struct ntfsmount *ntmp = VFSTONTFS(mp); 754 u_int64_t mftallocated; 755 756 dprintf(("ntfs_statvfs():\n")); 757 758 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 759 760 #if defined(__FreeBSD__) 761 sbp->f_type = mp->mnt_vfc->vfc_typenum; 762 #endif 763 sbp->f_bsize = ntmp->ntm_bps; 764 sbp->f_frsize = sbp->f_bsize; /* XXX */ 765 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 766 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 767 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 768 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 769 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 770 sbp->f_ffree; 771 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 772 sbp->f_flag = mp->mnt_flag; 773 copy_statvfs_info(sbp, mp); 774 return (0); 775 } 776 777 static int 778 ntfs_sync ( 779 struct mount *mp, 780 int waitfor, 781 kauth_cred_t cred, 782 struct lwp *l) 783 { 784 /*dprintf(("ntfs_sync():\n"));*/ 785 return (0); 786 } 787 788 /*ARGSUSED*/ 789 static int 790 ntfs_fhtovp( 791 #if defined(__FreeBSD__) 792 struct mount *mp, 793 struct fid *fhp, 794 struct sockaddr *nam, 795 struct vnode **vpp, 796 int *exflagsp, 797 struct ucred **credanonp) 798 #elif defined(__NetBSD__) 799 struct mount *mp, 800 struct fid *fhp, 801 struct vnode **vpp) 802 #else 803 struct mount *mp, 804 struct fid *fhp, 805 struct mbuf *nam, 806 struct vnode **vpp, 807 int *exflagsp, 808 struct ucred **credanonp) 809 #endif 810 { 811 struct ntfid ntfh; 812 int error; 813 814 if (fhp->fid_len != sizeof(struct ntfid)) 815 return EINVAL; 816 memcpy(&ntfh, fhp, sizeof(ntfh)); 817 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 818 (unsigned long long)ntfh.ntfid_ino)); 819 820 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 821 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 822 if (error != 0) { 823 *vpp = NULLVP; 824 return (error); 825 } 826 827 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 828 * with NTFS, we don't need to check anything else for now */ 829 return (0); 830 } 831 832 static int 833 ntfs_vptofh( 834 struct vnode *vp, 835 struct fid *fhp, 836 size_t *fh_size) 837 { 838 struct ntnode *ntp; 839 struct ntfid ntfh; 840 struct fnode *fn; 841 842 if (*fh_size < sizeof(struct ntfid)) { 843 *fh_size = sizeof(struct ntfid); 844 return E2BIG; 845 } 846 *fh_size = sizeof(struct ntfid); 847 848 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 849 vp)); 850 851 fn = VTOF(vp); 852 ntp = VTONT(vp); 853 memset(&ntfh, 0, sizeof(ntfh)); 854 ntfh.ntfid_len = sizeof(struct ntfid); 855 ntfh.ntfid_ino = ntp->i_number; 856 ntfh.ntfid_attr = fn->f_attrtype; 857 #ifdef notyet 858 ntfh.ntfid_gen = ntp->i_gen; 859 #endif 860 memcpy(fhp, &ntfh, sizeof(ntfh)); 861 return (0); 862 } 863 864 int 865 ntfs_vgetex( 866 struct mount *mp, 867 ino_t ino, 868 u_int32_t attrtype, 869 char *attrname, 870 u_long lkflags, 871 u_long flags, 872 struct vnode **vpp) 873 { 874 int error; 875 struct ntfsmount *ntmp; 876 struct ntnode *ip; 877 struct fnode *fp; 878 struct vnode *vp; 879 enum vtype f_type = VBAD; 880 881 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 882 " 0x%lx\n", (unsigned long long)ino, attrtype, 883 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 884 885 ntmp = VFSTONTFS(mp); 886 *vpp = NULL; 887 888 /* Get ntnode */ 889 error = ntfs_ntlookup(ntmp, ino, &ip); 890 if (error) { 891 printf("ntfs_vget: ntfs_ntget failed\n"); 892 return (error); 893 } 894 895 /* It may be not initialized fully, so force load it */ 896 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 897 error = ntfs_loadntnode(ntmp, ip); 898 if(error) { 899 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 900 " %llu\n", (unsigned long long)ip->i_number); 901 ntfs_ntput(ip); 902 return (error); 903 } 904 } 905 906 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 907 if (error) { 908 printf("ntfs_vget: ntfs_fget failed\n"); 909 ntfs_ntput(ip); 910 return (error); 911 } 912 913 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 914 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 915 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 916 f_type = VDIR; 917 } else if (flags & VG_EXT) { 918 f_type = VNON; 919 fp->f_size = fp->f_allocated = 0; 920 } else { 921 f_type = VREG; 922 923 error = ntfs_filesize(ntmp, fp, 924 &fp->f_size, &fp->f_allocated); 925 if (error) { 926 ntfs_ntput(ip); 927 return (error); 928 } 929 } 930 931 fp->f_flag |= FN_VALID; 932 } 933 934 /* 935 * We may be calling vget() now. To avoid potential deadlock, we need 936 * to release ntnode lock, since due to locking order vnode 937 * lock has to be acquired first. 938 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 939 * prematurely. 940 */ 941 ntfs_ntput(ip); 942 943 if (FTOV(fp)) { 944 /* vget() returns error if the vnode has been recycled */ 945 if (vget(FTOV(fp), lkflags) == 0) { 946 *vpp = FTOV(fp); 947 return (0); 948 } 949 } 950 951 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 952 if(error) { 953 ntfs_frele(fp); 954 ntfs_ntput(ip); 955 return (error); 956 } 957 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 958 (unsigned long long)ino)); 959 960 #ifdef __FreeBSD__ 961 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 962 #endif 963 fp->f_vp = vp; 964 vp->v_data = fp; 965 if (f_type != VBAD) 966 vp->v_type = f_type; 967 968 if (ino == NTFS_ROOTINO) 969 vp->v_flag |= VROOT; 970 971 if (lkflags & LK_TYPE_MASK) { 972 error = vn_lock(vp, lkflags); 973 if (error) { 974 vput(vp); 975 return (error); 976 } 977 } 978 979 genfs_node_init(vp, &ntfs_genfsops); 980 uvm_vnp_setsize(vp, 0); /* XXX notused */ 981 VREF(ip->i_devvp); 982 *vpp = vp; 983 return (0); 984 } 985 986 static int 987 ntfs_vget( 988 struct mount *mp, 989 ino_t ino, 990 struct vnode **vpp) 991 { 992 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 993 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 994 } 995 996 #if defined(__FreeBSD__) 997 static struct vfsops ntfs_vfsops = { 998 ntfs_mount, 999 ntfs_start, 1000 ntfs_unmount, 1001 ntfs_root, 1002 ntfs_quotactl, 1003 ntfs_statvfs, 1004 ntfs_sync, 1005 ntfs_vget, 1006 ntfs_fhtovp, 1007 ntfs_vptofh, 1008 ntfs_init, 1009 NULL 1010 }; 1011 VFS_SET(ntfs_vfsops, ntfs, 0); 1012 #elif defined(__NetBSD__) 1013 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1014 1015 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1016 &ntfs_vnodeop_opv_desc, 1017 NULL, 1018 }; 1019 1020 struct vfsops ntfs_vfsops = { 1021 MOUNT_NTFS, 1022 #if !defined(__FreeBSD__) 1023 sizeof (struct ntfs_args), 1024 #endif 1025 ntfs_mount, 1026 ntfs_start, 1027 ntfs_unmount, 1028 ntfs_root, 1029 ntfs_quotactl, 1030 ntfs_statvfs, 1031 ntfs_sync, 1032 ntfs_vget, 1033 ntfs_fhtovp, 1034 ntfs_vptofh, 1035 ntfs_init, 1036 ntfs_reinit, 1037 ntfs_done, 1038 ntfs_mountroot, 1039 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1040 vfs_stdextattrctl, 1041 (void *)eopnotsupp, /* vfs_suspendctl */ 1042 ntfs_vnodeopv_descs, 1043 0, 1044 { NULL, NULL }, 1045 }; 1046 VFS_ATTACH(ntfs_vfsops); 1047 #endif 1048
Indexes created Sun Sep 21 18:09:52 GMT 2025