ntfs_vfsops.c revision 1.53
1 /* $NetBSD: ntfs_vfsops.c,v 1.53 2007/07/23 11:27:46 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 1.53 2007/07/23 11:27:46 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 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 size_t *data_len, 234 #endif 235 struct nameidata *ndp, 236 #if defined(__FreeBSD__) 237 struct proc *p ) 238 #else 239 struct lwp *l ) 240 #endif 241 { 242 int err = 0, flags; 243 struct vnode *devvp; 244 #if defined(__FreeBSD__) 245 struct ntfs_args *args = args_buf; 246 #else 247 struct ntfs_args *args = data; 248 249 if (*data_len < sizeof *args) 250 return EINVAL; 251 #endif 252 253 if (mp->mnt_flag & MNT_GETARGS) { 254 struct ntfsmount *ntmp = VFSTONTFS(mp); 255 if (ntmp == NULL) 256 return EIO; 257 args->fspec = NULL; 258 args->uid = ntmp->ntm_uid; 259 args->gid = ntmp->ntm_gid; 260 args->mode = ntmp->ntm_mode; 261 args->flag = ntmp->ntm_flag; 262 #if defined(__FreeBSD__) 263 return copyout(args, data, sizeof(args)); 264 #else 265 *data_len = sizeof *args; 266 return 0; 267 #endif 268 } 269 /* 270 *** 271 * Mounting non-root file system or updating a file system 272 *** 273 */ 274 275 #if defined(__FreeBSD__) 276 /* copy in user arguments*/ 277 err = copyin(data, args, sizeof (struct ntfs_args)); 278 if (err) 279 return (err); /* can't get arguments*/ 280 #endif 281 282 /* 283 * If updating, check whether changing from read-only to 284 * read/write; if there is no device name, that's all we do. 285 */ 286 if (mp->mnt_flag & MNT_UPDATE) { 287 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 288 return (EINVAL); 289 } 290 291 /* 292 * Not an update, or updating the name: look up the name 293 * and verify that it refers to a sensible block device. 294 */ 295 #ifdef __FreeBSD__ 296 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec, p); 297 #else 298 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec, l); 299 #endif 300 err = namei(ndp); 301 if (err) { 302 /* can't get devvp!*/ 303 return (err); 304 } 305 306 devvp = ndp->ni_vp; 307 308 if (devvp->v_type != VBLK) { 309 err = ENOTBLK; 310 goto fail; 311 } 312 #ifdef __FreeBSD__ 313 if (bdevsw(devvp->v_rdev) == NULL) { 314 #else 315 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 316 #endif 317 err = ENXIO; 318 goto fail; 319 } 320 if (mp->mnt_flag & MNT_UPDATE) { 321 #if 0 322 /* 323 ******************** 324 * UPDATE 325 ******************** 326 */ 327 328 if (devvp != ntmp->um_devvp) { 329 err = EINVAL; /* needs translation */ 330 goto fail; 331 } 332 333 /* 334 * Update device name only on success 335 */ 336 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 337 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 338 if (err) 339 goto fail; 340 341 vrele(devvp); 342 #endif 343 } else { 344 /* 345 ******************** 346 * NEW MOUNT 347 ******************** 348 */ 349 350 /* 351 * Since this is a new mount, we want the names for 352 * the device and the mount point copied in. If an 353 * error occurs, the mountpoint is discarded by the 354 * upper level code. 355 */ 356 357 /* Save "last mounted on" info for mount point (NULL pad)*/ 358 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 359 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 360 if (err) 361 goto fail; 362 363 /* 364 * Disallow multiple mounts of the same device. 365 * Disallow mounting of a device that is currently in use 366 * (except for root, which might share swap device for 367 * miniroot). 368 */ 369 err = vfs_mountedon(devvp); 370 if (err) 371 goto fail; 372 if (vcount(devvp) > 1 && devvp != rootvp) { 373 err = EBUSY; 374 goto fail; 375 } 376 if (mp->mnt_flag & MNT_RDONLY) 377 flags = FREAD; 378 else 379 flags = FREAD|FWRITE; 380 err = VOP_OPEN(devvp, flags, FSCRED, l); 381 if (err) 382 goto fail; 383 err = ntfs_mountfs(devvp, mp, args, l); 384 if (err) { 385 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 386 (void)VOP_CLOSE(devvp, flags, NOCRED, l); 387 VOP_UNLOCK(devvp, 0); 388 goto fail; 389 } 390 } 391 392 #ifdef __FreeBSD__ 393 dostatvfs: 394 #endif 395 /* 396 * Initialize FS stat information in mount struct; uses both 397 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 398 * 399 * This code is common to root and non-root mounts 400 */ 401 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 402 return (err); 403 404 fail: 405 vrele(devvp); 406 return (err); 407 } 408 409 /* 410 * Common code for mount and mountroot 411 */ 412 int 413 ntfs_mountfs(devvp, mp, argsp, l) 414 struct vnode *devvp; 415 struct mount *mp; 416 struct ntfs_args *argsp; 417 struct lwp *l; 418 { 419 struct buf *bp; 420 struct ntfsmount *ntmp; 421 dev_t dev = devvp->v_rdev; 422 int error, ronly, i; 423 struct vnode *vp; 424 425 ntmp = NULL; 426 427 /* 428 * Flush out any old buffers remaining from a previous use. 429 */ 430 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 431 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 432 VOP_UNLOCK(devvp, 0); 433 if (error) 434 return (error); 435 436 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 437 438 bp = NULL; 439 440 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 441 if (error) 442 goto out; 443 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 444 bzero( ntmp, sizeof *ntmp ); 445 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 446 brelse( bp ); 447 bp = NULL; 448 449 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 450 error = EINVAL; 451 dprintf(("ntfs_mountfs: invalid boot block\n")); 452 goto out; 453 } 454 455 { 456 int8_t cpr = ntmp->ntm_mftrecsz; 457 if( cpr > 0 ) 458 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 459 else 460 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 461 } 462 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 463 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 464 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 465 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 466 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 467 468 ntmp->ntm_mountp = mp; 469 ntmp->ntm_dev = dev; 470 ntmp->ntm_devvp = devvp; 471 ntmp->ntm_uid = argsp->uid; 472 ntmp->ntm_gid = argsp->gid; 473 ntmp->ntm_mode = argsp->mode; 474 ntmp->ntm_flag = argsp->flag; 475 mp->mnt_data = ntmp; 476 477 /* set file name encode/decode hooks XXX utf-8 only for now */ 478 ntmp->ntm_wget = ntfs_utf8_wget; 479 ntmp->ntm_wput = ntfs_utf8_wput; 480 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 481 482 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 483 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 484 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 485 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 486 487 /* 488 * We read in some system nodes to do not allow 489 * reclaim them and to have everytime access to them. 490 */ 491 { 492 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 493 for (i=0; i<3; i++) { 494 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 495 if(error) 496 goto out1; 497 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 498 VREF(ntmp->ntm_sysvn[pi[i]]); 499 vput(ntmp->ntm_sysvn[pi[i]]); 500 } 501 } 502 503 /* read the Unicode lowercase --> uppercase translation table, 504 * if necessary */ 505 if ((error = ntfs_toupper_use(mp, ntmp))) 506 goto out1; 507 508 /* 509 * Scan $BitMap and count free clusters 510 */ 511 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 512 if(error) 513 goto out1; 514 515 /* 516 * Read and translate to internal format attribute 517 * definition file. 518 */ 519 { 520 int num,j; 521 struct attrdef ad; 522 523 /* Open $AttrDef */ 524 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 525 if(error) 526 goto out1; 527 528 /* Count valid entries */ 529 for(num=0;;num++) { 530 error = ntfs_readattr(ntmp, VTONT(vp), 531 NTFS_A_DATA, NULL, 532 num * sizeof(ad), sizeof(ad), 533 &ad, NULL); 534 if (error) 535 goto out1; 536 if (ad.ad_name[0] == 0) 537 break; 538 } 539 540 /* Alloc memory for attribute definitions */ 541 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 542 num * sizeof(struct ntvattrdef), 543 M_NTFSMNT, M_WAITOK); 544 545 ntmp->ntm_adnum = num; 546 547 /* Read them and translate */ 548 for(i=0;i<num;i++){ 549 error = ntfs_readattr(ntmp, VTONT(vp), 550 NTFS_A_DATA, NULL, 551 i * sizeof(ad), sizeof(ad), 552 &ad, NULL); 553 if (error) 554 goto out1; 555 j = 0; 556 do { 557 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 558 } while(ad.ad_name[j++]); 559 ntmp->ntm_ad[i].ad_namelen = j - 1; 560 ntmp->ntm_ad[i].ad_type = ad.ad_type; 561 } 562 563 vput(vp); 564 } 565 566 #if defined(__FreeBSD__) 567 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 568 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 569 #else 570 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 571 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 572 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 573 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 574 #endif 575 mp->mnt_flag |= MNT_LOCAL; 576 devvp->v_specmountpoint = mp; 577 return (0); 578 579 out1: 580 for(i=0;i<NTFS_SYSNODESNUM;i++) 581 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 582 583 if (vflush(mp,NULLVP,0)) { 584 dprintf(("ntfs_mountfs: vflush failed\n")); 585 } 586 out: 587 devvp->v_specmountpoint = NULL; 588 if (bp) 589 brelse(bp); 590 591 if (error) { 592 if (ntmp) { 593 if (ntmp->ntm_ad) 594 free(ntmp->ntm_ad, M_NTFSMNT); 595 free(ntmp, M_NTFSMNT); 596 } 597 } 598 599 return (error); 600 } 601 602 static int 603 ntfs_start ( 604 struct mount *mp, 605 int flags, 606 struct lwp *l) 607 { 608 return (0); 609 } 610 611 static int 612 ntfs_unmount( 613 struct mount *mp, 614 int mntflags, 615 struct lwp *l) 616 { 617 struct ntfsmount *ntmp; 618 int error, ronly = 0, flags, i; 619 620 dprintf(("ntfs_unmount: unmounting...\n")); 621 ntmp = VFSTONTFS(mp); 622 623 flags = 0; 624 if(mntflags & MNT_FORCE) 625 flags |= FORCECLOSE; 626 627 dprintf(("ntfs_unmount: vflushing...\n")); 628 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 629 if (error) { 630 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 631 return (error); 632 } 633 634 /* Check if only system vnodes are rest */ 635 for(i=0;i<NTFS_SYSNODESNUM;i++) 636 if((ntmp->ntm_sysvn[i]) && 637 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 638 639 /* Dereference all system vnodes */ 640 for(i=0;i<NTFS_SYSNODESNUM;i++) 641 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 642 643 /* vflush system vnodes */ 644 error = vflush(mp,NULLVP,flags); 645 if (error) { 646 /* XXX should this be panic() ? */ 647 printf("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 VOP_UNLOCK(ntmp->ntm_devvp, 0); 664 665 vrele(ntmp->ntm_devvp); 666 667 /* free the toupper table, if this has been last mounted ntfs volume */ 668 ntfs_toupper_unuse(); 669 670 dprintf(("ntfs_umount: freeing memory...\n")); 671 mp->mnt_data = NULL; 672 mp->mnt_flag &= ~MNT_LOCAL; 673 free(ntmp->ntm_ad, M_NTFSMNT); 674 FREE(ntmp, M_NTFSMNT); 675 return (error); 676 } 677 678 static int 679 ntfs_root( 680 struct mount *mp, 681 struct vnode **vpp) 682 { 683 struct vnode *nvp; 684 int error = 0; 685 686 dprintf(("ntfs_root(): sysvn: %p\n", 687 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 688 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 689 if(error) { 690 printf("ntfs_root: VFS_VGET failed: %d\n",error); 691 return (error); 692 } 693 694 *vpp = nvp; 695 return (0); 696 } 697 698 /* 699 * Do operations associated with quotas, not supported 700 */ 701 /* ARGSUSED */ 702 static int 703 ntfs_quotactl ( 704 struct mount *mp, 705 int cmds, 706 uid_t uid, 707 void *arg, 708 struct lwp *l) 709 { 710 711 return EOPNOTSUPP; 712 } 713 714 int 715 ntfs_calccfree( 716 struct ntfsmount *ntmp, 717 cn_t *cfreep) 718 { 719 struct vnode *vp; 720 u_int8_t *tmp; 721 int j, error; 722 cn_t cfree = 0; 723 size_t bmsize, i; 724 725 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 726 727 bmsize = VTOF(vp)->f_size; 728 729 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 730 731 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 732 0, bmsize, tmp, NULL); 733 if (error) 734 goto out; 735 736 for(i=0;i<bmsize;i++) 737 for(j=0;j<8;j++) 738 if(~tmp[i] & (1 << j)) cfree++; 739 *cfreep = cfree; 740 741 out: 742 free(tmp, M_TEMP); 743 return(error); 744 } 745 746 static int 747 ntfs_statvfs( 748 struct mount *mp, 749 struct statvfs *sbp, 750 struct lwp *l) 751 { 752 struct ntfsmount *ntmp = VFSTONTFS(mp); 753 u_int64_t mftallocated; 754 755 dprintf(("ntfs_statvfs():\n")); 756 757 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 758 759 #if defined(__FreeBSD__) 760 sbp->f_type = mp->mnt_vfc->vfc_typenum; 761 #endif 762 sbp->f_bsize = ntmp->ntm_bps; 763 sbp->f_frsize = sbp->f_bsize; /* XXX */ 764 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 765 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 766 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 767 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 768 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 769 sbp->f_ffree; 770 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 771 sbp->f_flag = mp->mnt_flag; 772 copy_statvfs_info(sbp, mp); 773 return (0); 774 } 775 776 static int 777 ntfs_sync ( 778 struct mount *mp, 779 int waitfor, 780 kauth_cred_t cred, 781 struct lwp *l) 782 { 783 /*dprintf(("ntfs_sync():\n"));*/ 784 return (0); 785 } 786 787 /*ARGSUSED*/ 788 static int 789 ntfs_fhtovp( 790 #if defined(__FreeBSD__) 791 struct mount *mp, 792 struct fid *fhp, 793 struct sockaddr *nam, 794 struct vnode **vpp, 795 int *exflagsp, 796 struct ucred **credanonp) 797 #elif defined(__NetBSD__) 798 struct mount *mp, 799 struct fid *fhp, 800 struct vnode **vpp) 801 #else 802 struct mount *mp, 803 struct fid *fhp, 804 struct mbuf *nam, 805 struct vnode **vpp, 806 int *exflagsp, 807 struct ucred **credanonp) 808 #endif 809 { 810 struct ntfid ntfh; 811 int error; 812 813 if (fhp->fid_len != sizeof(struct ntfid)) 814 return EINVAL; 815 memcpy(&ntfh, fhp, sizeof(ntfh)); 816 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 817 (unsigned long long)ntfh.ntfid_ino)); 818 819 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 820 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 821 if (error != 0) { 822 *vpp = NULLVP; 823 return (error); 824 } 825 826 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 827 * with NTFS, we don't need to check anything else for now */ 828 return (0); 829 } 830 831 static int 832 ntfs_vptofh( 833 struct vnode *vp, 834 struct fid *fhp, 835 size_t *fh_size) 836 { 837 struct ntnode *ntp; 838 struct ntfid ntfh; 839 struct fnode *fn; 840 841 if (*fh_size < sizeof(struct ntfid)) { 842 *fh_size = sizeof(struct ntfid); 843 return E2BIG; 844 } 845 *fh_size = sizeof(struct ntfid); 846 847 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 848 vp)); 849 850 fn = VTOF(vp); 851 ntp = VTONT(vp); 852 memset(&ntfh, 0, sizeof(ntfh)); 853 ntfh.ntfid_len = sizeof(struct ntfid); 854 ntfh.ntfid_ino = ntp->i_number; 855 ntfh.ntfid_attr = fn->f_attrtype; 856 #ifdef notyet 857 ntfh.ntfid_gen = ntp->i_gen; 858 #endif 859 memcpy(fhp, &ntfh, sizeof(ntfh)); 860 return (0); 861 } 862 863 int 864 ntfs_vgetex( 865 struct mount *mp, 866 ino_t ino, 867 u_int32_t attrtype, 868 char *attrname, 869 u_long lkflags, 870 u_long flags, 871 struct vnode **vpp) 872 { 873 int error; 874 struct ntfsmount *ntmp; 875 struct ntnode *ip; 876 struct fnode *fp; 877 struct vnode *vp; 878 enum vtype f_type = VBAD; 879 880 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 881 " 0x%lx\n", (unsigned long long)ino, attrtype, 882 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 883 884 ntmp = VFSTONTFS(mp); 885 *vpp = NULL; 886 887 /* Get ntnode */ 888 error = ntfs_ntlookup(ntmp, ino, &ip); 889 if (error) { 890 printf("ntfs_vget: ntfs_ntget failed\n"); 891 return (error); 892 } 893 894 /* It may be not initialized fully, so force load it */ 895 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 896 error = ntfs_loadntnode(ntmp, ip); 897 if(error) { 898 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 899 " %llu\n", (unsigned long long)ip->i_number); 900 ntfs_ntput(ip); 901 return (error); 902 } 903 } 904 905 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 906 if (error) { 907 printf("ntfs_vget: ntfs_fget failed\n"); 908 ntfs_ntput(ip); 909 return (error); 910 } 911 912 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 913 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 914 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 915 f_type = VDIR; 916 } else if (flags & VG_EXT) { 917 f_type = VNON; 918 fp->f_size = fp->f_allocated = 0; 919 } else { 920 f_type = VREG; 921 922 error = ntfs_filesize(ntmp, fp, 923 &fp->f_size, &fp->f_allocated); 924 if (error) { 925 ntfs_ntput(ip); 926 return (error); 927 } 928 } 929 930 fp->f_flag |= FN_VALID; 931 } 932 933 /* 934 * We may be calling vget() now. To avoid potential deadlock, we need 935 * to release ntnode lock, since due to locking order vnode 936 * lock has to be acquired first. 937 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 938 * prematurely. 939 */ 940 ntfs_ntput(ip); 941 942 if (FTOV(fp)) { 943 /* vget() returns error if the vnode has been recycled */ 944 if (vget(FTOV(fp), lkflags) == 0) { 945 *vpp = FTOV(fp); 946 return (0); 947 } 948 } 949 950 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 951 if(error) { 952 ntfs_frele(fp); 953 ntfs_ntput(ip); 954 return (error); 955 } 956 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 957 (unsigned long long)ino)); 958 959 #ifdef __FreeBSD__ 960 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 961 #endif 962 fp->f_vp = vp; 963 vp->v_data = fp; 964 if (f_type != VBAD) 965 vp->v_type = f_type; 966 967 if (ino == NTFS_ROOTINO) 968 vp->v_flag |= VROOT; 969 970 if (lkflags & LK_TYPE_MASK) { 971 error = vn_lock(vp, lkflags); 972 if (error) { 973 vput(vp); 974 return (error); 975 } 976 } 977 978 genfs_node_init(vp, &ntfs_genfsops); 979 uvm_vnp_setsize(vp, 0); /* XXX notused */ 980 VREF(ip->i_devvp); 981 *vpp = vp; 982 return (0); 983 } 984 985 static int 986 ntfs_vget( 987 struct mount *mp, 988 ino_t ino, 989 struct vnode **vpp) 990 { 991 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 992 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 993 } 994 995 #if defined(__FreeBSD__) 996 static struct vfsops ntfs_vfsops = { 997 ntfs_mount, 998 ntfs_start, 999 ntfs_unmount, 1000 ntfs_root, 1001 ntfs_quotactl, 1002 ntfs_statvfs, 1003 ntfs_sync, 1004 ntfs_vget, 1005 ntfs_fhtovp, 1006 ntfs_vptofh, 1007 ntfs_init, 1008 NULL 1009 }; 1010 VFS_SET(ntfs_vfsops, ntfs, 0); 1011 #elif defined(__NetBSD__) 1012 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1013 1014 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1015 &ntfs_vnodeop_opv_desc, 1016 NULL, 1017 }; 1018 1019 struct vfsops ntfs_vfsops = { 1020 MOUNT_NTFS, 1021 #if !defined(__FreeBSD__) 1022 sizeof (struct ntfs_args), 1023 #endif 1024 ntfs_mount, 1025 ntfs_start, 1026 ntfs_unmount, 1027 ntfs_root, 1028 ntfs_quotactl, 1029 ntfs_statvfs, 1030 ntfs_sync, 1031 ntfs_vget, 1032 ntfs_fhtovp, 1033 ntfs_vptofh, 1034 ntfs_init, 1035 ntfs_reinit, 1036 ntfs_done, 1037 ntfs_mountroot, 1038 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1039 vfs_stdextattrctl, 1040 vfs_stdsuspendctl, 1041 ntfs_vnodeopv_descs, 1042 0, 1043 { NULL, NULL }, 1044 }; 1045 VFS_ATTACH(ntfs_vfsops); 1046 #endif 1047
Indexes created Mon Sep 22 13:09:51 GMT 2025