ntfs_vfsops.c revision 1.61
1 /* $NetBSD: ntfs_vfsops.c,v 1.61 2008/01/24 17:32:53 ad 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 1.61 2008/01/24 17:32:53 ad 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 #endif 75 static int ntfs_root(struct mount *, struct vnode **); 76 static int ntfs_start(struct mount *, int); 77 static int ntfs_statvfs(struct mount *, struct statvfs *); 78 static int ntfs_sync(struct mount *, int, kauth_cred_t); 79 static int ntfs_unmount(struct mount *, int); 80 static int ntfs_vget(struct mount *mp, ino_t ino, 81 struct vnode **vpp); 82 static int ntfs_mountfs(struct vnode *, struct mount *, 83 struct ntfs_args *, struct lwp *); 84 static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); 85 86 #if defined(__FreeBSD__) 87 static int ntfs_init(struct vfsconf *); 88 static int ntfs_fhtovp(struct mount *, struct fid *, 89 struct sockaddr *, struct vnode **, 90 int *, struct ucred **); 91 #elif defined(__NetBSD__) 92 static void ntfs_init(void); 93 static void ntfs_reinit(void); 94 static void ntfs_done(void); 95 static int ntfs_fhtovp(struct mount *, struct fid *, 96 struct vnode **); 97 static int ntfs_mountroot(void); 98 #else 99 static int ntfs_init(void); 100 static int ntfs_fhtovp(struct mount *, struct fid *, 101 struct mbuf *, struct vnode **, 102 int *, kauth_cred_t *); 103 #endif 104 105 static const struct genfs_ops ntfs_genfsops = { 106 .gop_write = genfs_compat_gop_write, 107 }; 108 109 #ifdef __NetBSD__ 110 111 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 112 { 113 114 sysctl_createv(clog, 0, NULL, NULL, 115 CTLFLAG_PERMANENT, 116 CTLTYPE_NODE, "vfs", NULL, 117 NULL, 0, NULL, 0, 118 CTL_VFS, CTL_EOL); 119 sysctl_createv(clog, 0, NULL, NULL, 120 CTLFLAG_PERMANENT, 121 CTLTYPE_NODE, "ntfs", 122 SYSCTL_DESCR("NTFS file system"), 123 NULL, 0, NULL, 0, 124 CTL_VFS, 20, CTL_EOL); 125 /* 126 * XXX the "20" above could be dynamic, thereby eliminating 127 * one more instance of the "number to vfs" mapping problem, 128 * but "20" is the order as taken from sys/mount.h 129 */ 130 } 131 132 static int 133 ntfs_mountroot() 134 { 135 struct mount *mp; 136 struct lwp *l = curlwp; /* XXX */ 137 int error; 138 struct ntfs_args args; 139 140 if (device_class(root_device) != DV_DISK) 141 return (ENODEV); 142 143 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 144 vrele(rootvp); 145 return (error); 146 } 147 148 args.flag = 0; 149 args.uid = 0; 150 args.gid = 0; 151 args.mode = 0777; 152 153 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 154 mp->mnt_op->vfs_refcount--; 155 vfs_unbusy(mp); 156 vfs_destroy(mp); 157 return (error); 158 } 159 160 mutex_enter(&mountlist_lock); 161 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 162 mutex_exit(&mountlist_lock); 163 (void)ntfs_statvfs(mp, &mp->mnt_stat); 164 vfs_unbusy(mp); 165 return (0); 166 } 167 168 static void 169 ntfs_init() 170 { 171 172 malloc_type_attach(M_NTFSMNT); 173 malloc_type_attach(M_NTFSNTNODE); 174 malloc_type_attach(M_NTFSFNODE); 175 malloc_type_attach(M_NTFSDIR); 176 malloc_type_attach(M_NTFSNTHASH); 177 malloc_type_attach(M_NTFSNTVATTR); 178 malloc_type_attach(M_NTFSRDATA); 179 malloc_type_attach(M_NTFSDECOMP); 180 malloc_type_attach(M_NTFSRUN); 181 ntfs_nthashinit(); 182 ntfs_toupper_init(); 183 } 184 185 static void 186 ntfs_reinit() 187 { 188 ntfs_nthashreinit(); 189 } 190 191 static void 192 ntfs_done() 193 { 194 ntfs_nthashdone(); 195 malloc_type_detach(M_NTFSMNT); 196 malloc_type_detach(M_NTFSNTNODE); 197 malloc_type_detach(M_NTFSFNODE); 198 malloc_type_detach(M_NTFSDIR); 199 malloc_type_detach(M_NTFSNTHASH); 200 malloc_type_detach(M_NTFSNTVATTR); 201 malloc_type_detach(M_NTFSRDATA); 202 malloc_type_detach(M_NTFSDECOMP); 203 malloc_type_detach(M_NTFSRUN); 204 } 205 206 #elif defined(__FreeBSD__) 207 208 static int 209 ntfs_init ( 210 struct vfsconf *vcp ) 211 { 212 ntfs_nthashinit(); 213 ntfs_toupper_init(); 214 return 0; 215 } 216 217 #endif /* NetBSD */ 218 219 static int 220 ntfs_mount ( 221 struct mount *mp, 222 #if defined(__FreeBSD__) 223 char *path, 224 void *data, 225 struct nameidata *ndp, 226 struct proc *p ) 227 #else 228 const char *path, 229 void *data, 230 size_t *data_len) 231 #endif 232 { 233 struct nameidata nd; 234 #ifdef __NetBSD__ 235 struct lwp *l = curlwp; 236 struct nameidata *ndp = &nd; 237 #endif 238 int err = 0, flags; 239 struct vnode *devvp; 240 #if defined(__FreeBSD__) 241 struct ntfs_args *args = args_buf; 242 #else 243 struct ntfs_args *args = data; 244 245 if (*data_len < sizeof *args) 246 return EINVAL; 247 #endif 248 249 if (mp->mnt_flag & MNT_GETARGS) { 250 struct ntfsmount *ntmp = VFSTONTFS(mp); 251 if (ntmp == NULL) 252 return EIO; 253 args->fspec = NULL; 254 args->uid = ntmp->ntm_uid; 255 args->gid = ntmp->ntm_gid; 256 args->mode = ntmp->ntm_mode; 257 args->flag = ntmp->ntm_flag; 258 #if defined(__FreeBSD__) 259 return copyout(args, data, sizeof(args)); 260 #else 261 *data_len = sizeof *args; 262 return 0; 263 #endif 264 } 265 /* 266 *** 267 * Mounting non-root file system or updating a file system 268 *** 269 */ 270 271 #if defined(__FreeBSD__) 272 /* copy in user arguments*/ 273 err = copyin(data, args, sizeof (struct ntfs_args)); 274 if (err) 275 return (err); /* can't get arguments*/ 276 #endif 277 278 /* 279 * If updating, check whether changing from read-only to 280 * read/write; if there is no device name, that's all we do. 281 */ 282 if (mp->mnt_flag & MNT_UPDATE) { 283 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 284 return (EINVAL); 285 } 286 287 /* 288 * Not an update, or updating the name: look up the name 289 * and verify that it refers to a sensible block device. 290 */ 291 #ifdef __FreeBSD__ 292 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec, p); 293 #else 294 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 295 #endif 296 err = namei(ndp); 297 if (err) { 298 /* can't get devvp!*/ 299 return (err); 300 } 301 302 devvp = ndp->ni_vp; 303 304 if (devvp->v_type != VBLK) { 305 err = ENOTBLK; 306 goto fail; 307 } 308 #ifdef __FreeBSD__ 309 if (bdevsw(devvp->v_rdev) == NULL) { 310 #else 311 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 312 #endif 313 err = ENXIO; 314 goto fail; 315 } 316 if (mp->mnt_flag & MNT_UPDATE) { 317 #if 0 318 /* 319 ******************** 320 * UPDATE 321 ******************** 322 */ 323 324 if (devvp != ntmp->um_devvp) { 325 err = EINVAL; /* needs translation */ 326 goto fail; 327 } 328 329 /* 330 * Update device name only on success 331 */ 332 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 333 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 334 if (err) 335 goto fail; 336 337 vrele(devvp); 338 #endif 339 } else { 340 /* 341 ******************** 342 * NEW MOUNT 343 ******************** 344 */ 345 346 /* 347 * Since this is a new mount, we want the names for 348 * the device and the mount point copied in. If an 349 * error occurs, the mountpoint is discarded by the 350 * upper level code. 351 */ 352 353 /* Save "last mounted on" info for mount point (NULL pad)*/ 354 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 355 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 356 if (err) 357 goto fail; 358 359 if (mp->mnt_flag & MNT_RDONLY) 360 flags = FREAD; 361 else 362 flags = FREAD|FWRITE; 363 err = VOP_OPEN(devvp, flags, FSCRED); 364 if (err) 365 goto fail; 366 err = ntfs_mountfs(devvp, mp, args, l); 367 if (err) { 368 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 369 (void)VOP_CLOSE(devvp, flags, NOCRED); 370 VOP_UNLOCK(devvp, 0); 371 goto fail; 372 } 373 } 374 375 #ifdef __FreeBSD__ 376 dostatvfs: 377 #endif 378 /* 379 * Initialize FS stat information in mount struct; uses both 380 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 381 * 382 * This code is common to root and non-root mounts 383 */ 384 (void)VFS_STATVFS(mp, &mp->mnt_stat); 385 return (err); 386 387 fail: 388 vrele(devvp); 389 return (err); 390 } 391 392 /* 393 * Common code for mount and mountroot 394 */ 395 int 396 ntfs_mountfs(devvp, mp, argsp, l) 397 struct vnode *devvp; 398 struct mount *mp; 399 struct ntfs_args *argsp; 400 struct lwp *l; 401 { 402 struct buf *bp; 403 struct ntfsmount *ntmp; 404 dev_t dev = devvp->v_rdev; 405 int error, ronly, i; 406 struct vnode *vp; 407 408 ntmp = NULL; 409 410 /* 411 * Flush out any old buffers remaining from a previous use. 412 */ 413 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 414 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 415 VOP_UNLOCK(devvp, 0); 416 if (error) 417 return (error); 418 419 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 420 421 bp = NULL; 422 423 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 424 if (error) 425 goto out; 426 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 427 bzero( ntmp, sizeof *ntmp ); 428 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 429 brelse( bp , 0 ); 430 bp = NULL; 431 432 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 433 error = EINVAL; 434 dprintf(("ntfs_mountfs: invalid boot block\n")); 435 goto out; 436 } 437 438 { 439 int8_t cpr = ntmp->ntm_mftrecsz; 440 if( cpr > 0 ) 441 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 442 else 443 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 444 } 445 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 446 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 447 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 448 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 449 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 450 451 ntmp->ntm_mountp = mp; 452 ntmp->ntm_dev = dev; 453 ntmp->ntm_devvp = devvp; 454 ntmp->ntm_uid = argsp->uid; 455 ntmp->ntm_gid = argsp->gid; 456 ntmp->ntm_mode = argsp->mode; 457 ntmp->ntm_flag = argsp->flag; 458 mp->mnt_data = ntmp; 459 460 /* set file name encode/decode hooks XXX utf-8 only for now */ 461 ntmp->ntm_wget = ntfs_utf8_wget; 462 ntmp->ntm_wput = ntfs_utf8_wput; 463 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 464 465 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 466 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 467 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 468 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 469 470 /* 471 * We read in some system nodes to do not allow 472 * reclaim them and to have everytime access to them. 473 */ 474 { 475 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 476 for (i=0; i<3; i++) { 477 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 478 if(error) 479 goto out1; 480 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 481 VREF(ntmp->ntm_sysvn[pi[i]]); 482 vput(ntmp->ntm_sysvn[pi[i]]); 483 } 484 } 485 486 /* read the Unicode lowercase --> uppercase translation table, 487 * if necessary */ 488 if ((error = ntfs_toupper_use(mp, ntmp))) 489 goto out1; 490 491 /* 492 * Scan $BitMap and count free clusters 493 */ 494 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 495 if(error) 496 goto out1; 497 498 /* 499 * Read and translate to internal format attribute 500 * definition file. 501 */ 502 { 503 int num,j; 504 struct attrdef ad; 505 506 /* Open $AttrDef */ 507 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 508 if(error) 509 goto out1; 510 511 /* Count valid entries */ 512 for(num=0;;num++) { 513 error = ntfs_readattr(ntmp, VTONT(vp), 514 NTFS_A_DATA, NULL, 515 num * sizeof(ad), sizeof(ad), 516 &ad, NULL); 517 if (error) 518 goto out1; 519 if (ad.ad_name[0] == 0) 520 break; 521 } 522 523 /* Alloc memory for attribute definitions */ 524 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 525 num * sizeof(struct ntvattrdef), 526 M_NTFSMNT, M_WAITOK); 527 528 ntmp->ntm_adnum = num; 529 530 /* Read them and translate */ 531 for(i=0;i<num;i++){ 532 error = ntfs_readattr(ntmp, VTONT(vp), 533 NTFS_A_DATA, NULL, 534 i * sizeof(ad), sizeof(ad), 535 &ad, NULL); 536 if (error) 537 goto out1; 538 j = 0; 539 do { 540 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 541 } while(ad.ad_name[j++]); 542 ntmp->ntm_ad[i].ad_namelen = j - 1; 543 ntmp->ntm_ad[i].ad_type = ad.ad_type; 544 } 545 546 vput(vp); 547 } 548 549 #if defined(__FreeBSD__) 550 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 551 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 552 #else 553 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 554 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 555 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 556 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 557 #endif 558 mp->mnt_flag |= MNT_LOCAL; 559 devvp->v_specmountpoint = mp; 560 return (0); 561 562 out1: 563 for(i=0;i<NTFS_SYSNODESNUM;i++) 564 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 565 566 if (vflush(mp,NULLVP,0)) { 567 dprintf(("ntfs_mountfs: vflush failed\n")); 568 } 569 out: 570 devvp->v_specmountpoint = NULL; 571 if (bp) 572 brelse(bp, 0); 573 574 if (error) { 575 if (ntmp) { 576 if (ntmp->ntm_ad) 577 free(ntmp->ntm_ad, M_NTFSMNT); 578 free(ntmp, M_NTFSMNT); 579 } 580 } 581 582 return (error); 583 } 584 585 static int 586 ntfs_start ( 587 struct mount *mp, 588 int flags) 589 { 590 return (0); 591 } 592 593 static int 594 ntfs_unmount( 595 struct mount *mp, 596 int mntflags) 597 { 598 struct lwp *l = curlwp; 599 struct ntfsmount *ntmp; 600 int error, ronly = 0, flags, i; 601 602 dprintf(("ntfs_unmount: unmounting...\n")); 603 ntmp = VFSTONTFS(mp); 604 605 flags = 0; 606 if(mntflags & MNT_FORCE) 607 flags |= FORCECLOSE; 608 609 dprintf(("ntfs_unmount: vflushing...\n")); 610 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 611 if (error) { 612 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 613 return (error); 614 } 615 616 /* Check if only system vnodes are rest */ 617 for(i=0;i<NTFS_SYSNODESNUM;i++) 618 if((ntmp->ntm_sysvn[i]) && 619 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 620 621 /* Dereference all system vnodes */ 622 for(i=0;i<NTFS_SYSNODESNUM;i++) 623 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 624 625 /* vflush system vnodes */ 626 error = vflush(mp,NULLVP,flags); 627 if (error) { 628 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 629 } 630 631 /* Check if the type of device node isn't VBAD before 632 * touching v_specinfo. If the device vnode is revoked, the 633 * field is NULL and touching it causes null pointer derefercence. 634 */ 635 if (ntmp->ntm_devvp->v_type != VBAD) 636 ntmp->ntm_devvp->v_specmountpoint = NULL; 637 638 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 639 640 /* lock the device vnode before calling VOP_CLOSE() */ 641 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 642 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 643 NOCRED); 644 KASSERT(error == 0); 645 VOP_UNLOCK(ntmp->ntm_devvp, 0); 646 647 vrele(ntmp->ntm_devvp); 648 649 /* free the toupper table, if this has been last mounted ntfs volume */ 650 ntfs_toupper_unuse(); 651 652 dprintf(("ntfs_umount: freeing memory...\n")); 653 mp->mnt_data = NULL; 654 mp->mnt_flag &= ~MNT_LOCAL; 655 free(ntmp->ntm_ad, M_NTFSMNT); 656 FREE(ntmp, M_NTFSMNT); 657 return (0); 658 } 659 660 static int 661 ntfs_root( 662 struct mount *mp, 663 struct vnode **vpp) 664 { 665 struct vnode *nvp; 666 int error = 0; 667 668 dprintf(("ntfs_root(): sysvn: %p\n", 669 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 670 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 671 if(error) { 672 printf("ntfs_root: VFS_VGET failed: %d\n",error); 673 return (error); 674 } 675 676 *vpp = nvp; 677 return (0); 678 } 679 680 int 681 ntfs_calccfree( 682 struct ntfsmount *ntmp, 683 cn_t *cfreep) 684 { 685 struct vnode *vp; 686 u_int8_t *tmp; 687 int j, error; 688 cn_t cfree = 0; 689 size_t bmsize, i; 690 691 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 692 693 bmsize = VTOF(vp)->f_size; 694 695 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 696 697 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 698 0, bmsize, tmp, NULL); 699 if (error) 700 goto out; 701 702 for(i=0;i<bmsize;i++) 703 for(j=0;j<8;j++) 704 if(~tmp[i] & (1 << j)) cfree++; 705 *cfreep = cfree; 706 707 out: 708 free(tmp, M_TEMP); 709 return(error); 710 } 711 712 static int 713 ntfs_statvfs( 714 struct mount *mp, 715 struct statvfs *sbp) 716 { 717 struct ntfsmount *ntmp = VFSTONTFS(mp); 718 u_int64_t mftallocated; 719 720 dprintf(("ntfs_statvfs():\n")); 721 722 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 723 724 #if defined(__FreeBSD__) 725 sbp->f_type = mp->mnt_vfc->vfc_typenum; 726 #endif 727 sbp->f_bsize = ntmp->ntm_bps; 728 sbp->f_frsize = sbp->f_bsize; /* XXX */ 729 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 730 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 731 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 732 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 733 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 734 sbp->f_ffree; 735 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 736 sbp->f_flag = mp->mnt_flag; 737 copy_statvfs_info(sbp, mp); 738 return (0); 739 } 740 741 static int 742 ntfs_sync ( 743 struct mount *mp, 744 int waitfor, 745 kauth_cred_t cred) 746 { 747 /*dprintf(("ntfs_sync():\n"));*/ 748 return (0); 749 } 750 751 /*ARGSUSED*/ 752 static int 753 ntfs_fhtovp( 754 #if defined(__FreeBSD__) 755 struct mount *mp, 756 struct fid *fhp, 757 struct sockaddr *nam, 758 struct vnode **vpp, 759 int *exflagsp, 760 struct ucred **credanonp) 761 #elif defined(__NetBSD__) 762 struct mount *mp, 763 struct fid *fhp, 764 struct vnode **vpp) 765 #else 766 struct mount *mp, 767 struct fid *fhp, 768 struct mbuf *nam, 769 struct vnode **vpp, 770 int *exflagsp, 771 struct ucred **credanonp) 772 #endif 773 { 774 struct ntfid ntfh; 775 int error; 776 777 if (fhp->fid_len != sizeof(struct ntfid)) 778 return EINVAL; 779 memcpy(&ntfh, fhp, sizeof(ntfh)); 780 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 781 (unsigned long long)ntfh.ntfid_ino)); 782 783 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 784 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 785 if (error != 0) { 786 *vpp = NULLVP; 787 return (error); 788 } 789 790 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 791 * with NTFS, we don't need to check anything else for now */ 792 return (0); 793 } 794 795 static int 796 ntfs_vptofh( 797 struct vnode *vp, 798 struct fid *fhp, 799 size_t *fh_size) 800 { 801 struct ntnode *ntp; 802 struct ntfid ntfh; 803 struct fnode *fn; 804 805 if (*fh_size < sizeof(struct ntfid)) { 806 *fh_size = sizeof(struct ntfid); 807 return E2BIG; 808 } 809 *fh_size = sizeof(struct ntfid); 810 811 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 812 vp)); 813 814 fn = VTOF(vp); 815 ntp = VTONT(vp); 816 memset(&ntfh, 0, sizeof(ntfh)); 817 ntfh.ntfid_len = sizeof(struct ntfid); 818 ntfh.ntfid_ino = ntp->i_number; 819 ntfh.ntfid_attr = fn->f_attrtype; 820 #ifdef notyet 821 ntfh.ntfid_gen = ntp->i_gen; 822 #endif 823 memcpy(fhp, &ntfh, sizeof(ntfh)); 824 return (0); 825 } 826 827 int 828 ntfs_vgetex( 829 struct mount *mp, 830 ino_t ino, 831 u_int32_t attrtype, 832 char *attrname, 833 u_long lkflags, 834 u_long flags, 835 struct vnode **vpp) 836 { 837 int error; 838 struct ntfsmount *ntmp; 839 struct ntnode *ip; 840 struct fnode *fp; 841 struct vnode *vp; 842 enum vtype f_type = VBAD; 843 844 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 845 " 0x%lx\n", (unsigned long long)ino, attrtype, 846 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 847 848 ntmp = VFSTONTFS(mp); 849 *vpp = NULL; 850 851 /* Get ntnode */ 852 error = ntfs_ntlookup(ntmp, ino, &ip); 853 if (error) { 854 printf("ntfs_vget: ntfs_ntget failed\n"); 855 return (error); 856 } 857 858 /* It may be not initialized fully, so force load it */ 859 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 860 error = ntfs_loadntnode(ntmp, ip); 861 if(error) { 862 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 863 " %llu\n", (unsigned long long)ip->i_number); 864 ntfs_ntput(ip); 865 return (error); 866 } 867 } 868 869 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 870 if (error) { 871 printf("ntfs_vget: ntfs_fget failed\n"); 872 ntfs_ntput(ip); 873 return (error); 874 } 875 876 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 877 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 878 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 879 f_type = VDIR; 880 } else if (flags & VG_EXT) { 881 f_type = VNON; 882 fp->f_size = fp->f_allocated = 0; 883 } else { 884 f_type = VREG; 885 886 error = ntfs_filesize(ntmp, fp, 887 &fp->f_size, &fp->f_allocated); 888 if (error) { 889 ntfs_ntput(ip); 890 return (error); 891 } 892 } 893 894 fp->f_flag |= FN_VALID; 895 } 896 897 /* 898 * We may be calling vget() now. To avoid potential deadlock, we need 899 * to release ntnode lock, since due to locking order vnode 900 * lock has to be acquired first. 901 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 902 * prematurely. 903 */ 904 ntfs_ntput(ip); 905 906 if (FTOV(fp)) { 907 /* vget() returns error if the vnode has been recycled */ 908 if (vget(FTOV(fp), lkflags) == 0) { 909 *vpp = FTOV(fp); 910 return (0); 911 } 912 } 913 914 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 915 if(error) { 916 ntfs_frele(fp); 917 ntfs_ntput(ip); 918 return (error); 919 } 920 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 921 (unsigned long long)ino)); 922 923 #ifdef __FreeBSD__ 924 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 925 #endif 926 fp->f_vp = vp; 927 vp->v_data = fp; 928 if (f_type != VBAD) 929 vp->v_type = f_type; 930 931 if (ino == NTFS_ROOTINO) 932 vp->v_vflag |= VV_ROOT; 933 934 if (lkflags & LK_TYPE_MASK) { 935 error = vn_lock(vp, lkflags); 936 if (error) { 937 vput(vp); 938 return (error); 939 } 940 } 941 942 genfs_node_init(vp, &ntfs_genfsops); 943 uvm_vnp_setsize(vp, 0); /* XXX notused */ 944 VREF(ip->i_devvp); 945 *vpp = vp; 946 return (0); 947 } 948 949 static int 950 ntfs_vget( 951 struct mount *mp, 952 ino_t ino, 953 struct vnode **vpp) 954 { 955 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 956 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 957 } 958 959 #if defined(__FreeBSD__) 960 static struct vfsops ntfs_vfsops = { 961 ntfs_mount, 962 ntfs_start, 963 ntfs_unmount, 964 ntfs_root, 965 ntfs_quotactl, 966 ntfs_statvfs, 967 ntfs_sync, 968 ntfs_vget, 969 ntfs_fhtovp, 970 ntfs_vptofh, 971 ntfs_init, 972 NULL 973 }; 974 VFS_SET(ntfs_vfsops, ntfs, 0); 975 #elif defined(__NetBSD__) 976 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 977 978 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 979 &ntfs_vnodeop_opv_desc, 980 NULL, 981 }; 982 983 struct vfsops ntfs_vfsops = { 984 MOUNT_NTFS, 985 #if !defined(__FreeBSD__) 986 sizeof (struct ntfs_args), 987 #endif 988 ntfs_mount, 989 ntfs_start, 990 ntfs_unmount, 991 ntfs_root, 992 (void *)eopnotsupp, /* vfs_quotactl */ 993 ntfs_statvfs, 994 ntfs_sync, 995 ntfs_vget, 996 ntfs_fhtovp, 997 ntfs_vptofh, 998 ntfs_init, 999 ntfs_reinit, 1000 ntfs_done, 1001 ntfs_mountroot, 1002 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1003 vfs_stdextattrctl, 1004 (void *)eopnotsupp, /* vfs_suspendctl */ 1005 ntfs_vnodeopv_descs, 1006 0, 1007 { NULL, NULL }, 1008 }; 1009 VFS_ATTACH(ntfs_vfsops); 1010 #endif 1011
Indexes created Wed Oct 01 15:09:59 GMT 2025