ntfs_vfsops.c revision 1.62
1 /* $NetBSD: ntfs_vfsops.c,v 1.62 2008/01/28 14:31:16 dholland 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 1.62 2008/01/28 14:31:16 dholland 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/genfs/genfs.h> 56 #include <miscfs/specfs/specdev.h> 57 58 #include <fs/ntfs/ntfs.h> 59 #include <fs/ntfs/ntfs_inode.h> 60 #include <fs/ntfs/ntfs_subr.h> 61 #include <fs/ntfs/ntfs_vfsops.h> 62 #include <fs/ntfs/ntfs_ihash.h> 63 #include <fs/ntfs/ntfsmount.h> 64 65 MALLOC_JUSTDEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 66 MALLOC_JUSTDEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 67 MALLOC_JUSTDEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 68 MALLOC_JUSTDEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 69 70 #if defined(__FreeBSD__) 71 static int ntfs_mount(struct mount *, char *, void *, 72 struct nameidata *, struct proc *); 73 #else 74 static int ntfs_mount(struct mount *, const char *, void *, size_t *); 75 #endif 76 static int ntfs_root(struct mount *, struct vnode **); 77 static int ntfs_start(struct mount *, int); 78 static int ntfs_statvfs(struct mount *, struct statvfs *); 79 static int ntfs_sync(struct mount *, int, kauth_cred_t); 80 static int ntfs_unmount(struct mount *, int); 81 static int ntfs_vget(struct mount *mp, ino_t ino, 82 struct vnode **vpp); 83 static int ntfs_mountfs(struct vnode *, struct mount *, 84 struct ntfs_args *, struct lwp *); 85 static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); 86 87 #if defined(__FreeBSD__) 88 static int ntfs_init(struct vfsconf *); 89 static int ntfs_fhtovp(struct mount *, struct fid *, 90 struct sockaddr *, struct vnode **, 91 int *, struct ucred **); 92 #elif defined(__NetBSD__) 93 static void ntfs_init(void); 94 static void ntfs_reinit(void); 95 static void ntfs_done(void); 96 static int ntfs_fhtovp(struct mount *, struct fid *, 97 struct vnode **); 98 static int ntfs_mountroot(void); 99 #else 100 static int ntfs_init(void); 101 static int ntfs_fhtovp(struct mount *, struct fid *, 102 struct mbuf *, struct vnode **, 103 int *, kauth_cred_t *); 104 #endif 105 106 static const struct genfs_ops ntfs_genfsops = { 107 .gop_write = genfs_compat_gop_write, 108 }; 109 110 #ifdef __NetBSD__ 111 112 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 113 { 114 115 sysctl_createv(clog, 0, NULL, NULL, 116 CTLFLAG_PERMANENT, 117 CTLTYPE_NODE, "vfs", NULL, 118 NULL, 0, NULL, 0, 119 CTL_VFS, CTL_EOL); 120 sysctl_createv(clog, 0, NULL, NULL, 121 CTLFLAG_PERMANENT, 122 CTLTYPE_NODE, "ntfs", 123 SYSCTL_DESCR("NTFS file system"), 124 NULL, 0, NULL, 0, 125 CTL_VFS, 20, CTL_EOL); 126 /* 127 * XXX the "20" above could be dynamic, thereby eliminating 128 * one more instance of the "number to vfs" mapping problem, 129 * but "20" is the order as taken from sys/mount.h 130 */ 131 } 132 133 static int 134 ntfs_mountroot() 135 { 136 struct mount *mp; 137 struct lwp *l = curlwp; /* XXX */ 138 int error; 139 struct ntfs_args args; 140 141 if (device_class(root_device) != DV_DISK) 142 return (ENODEV); 143 144 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 145 vrele(rootvp); 146 return (error); 147 } 148 149 args.flag = 0; 150 args.uid = 0; 151 args.gid = 0; 152 args.mode = 0777; 153 154 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 155 mp->mnt_op->vfs_refcount--; 156 vfs_unbusy(mp); 157 vfs_destroy(mp); 158 return (error); 159 } 160 161 mutex_enter(&mountlist_lock); 162 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 163 mutex_exit(&mountlist_lock); 164 (void)ntfs_statvfs(mp, &mp->mnt_stat); 165 vfs_unbusy(mp); 166 return (0); 167 } 168 169 static void 170 ntfs_init() 171 { 172 173 malloc_type_attach(M_NTFSMNT); 174 malloc_type_attach(M_NTFSNTNODE); 175 malloc_type_attach(M_NTFSFNODE); 176 malloc_type_attach(M_NTFSDIR); 177 malloc_type_attach(M_NTFSNTHASH); 178 malloc_type_attach(M_NTFSNTVATTR); 179 malloc_type_attach(M_NTFSRDATA); 180 malloc_type_attach(M_NTFSDECOMP); 181 malloc_type_attach(M_NTFSRUN); 182 ntfs_nthashinit(); 183 ntfs_toupper_init(); 184 } 185 186 static void 187 ntfs_reinit() 188 { 189 ntfs_nthashreinit(); 190 } 191 192 static void 193 ntfs_done() 194 { 195 ntfs_nthashdone(); 196 malloc_type_detach(M_NTFSMNT); 197 malloc_type_detach(M_NTFSNTNODE); 198 malloc_type_detach(M_NTFSFNODE); 199 malloc_type_detach(M_NTFSDIR); 200 malloc_type_detach(M_NTFSNTHASH); 201 malloc_type_detach(M_NTFSNTVATTR); 202 malloc_type_detach(M_NTFSRDATA); 203 malloc_type_detach(M_NTFSDECOMP); 204 malloc_type_detach(M_NTFSRUN); 205 } 206 207 #elif defined(__FreeBSD__) 208 209 static int 210 ntfs_init ( 211 struct vfsconf *vcp ) 212 { 213 ntfs_nthashinit(); 214 ntfs_toupper_init(); 215 return 0; 216 } 217 218 #endif /* NetBSD */ 219 220 static int 221 ntfs_mount ( 222 struct mount *mp, 223 #if defined(__FreeBSD__) 224 char *path, 225 void *data, 226 struct nameidata *ndp, 227 struct proc *p ) 228 #else 229 const char *path, 230 void *data, 231 size_t *data_len) 232 #endif 233 { 234 struct nameidata nd; 235 #ifdef __NetBSD__ 236 struct lwp *l = curlwp; 237 struct nameidata *ndp = &nd; 238 #endif 239 int err = 0, flags; 240 struct vnode *devvp; 241 #if defined(__FreeBSD__) 242 struct ntfs_args *args = args_buf; 243 #else 244 struct ntfs_args *args = data; 245 246 if (*data_len < sizeof *args) 247 return EINVAL; 248 #endif 249 250 if (mp->mnt_flag & MNT_GETARGS) { 251 struct ntfsmount *ntmp = VFSTONTFS(mp); 252 if (ntmp == NULL) 253 return EIO; 254 args->fspec = NULL; 255 args->uid = ntmp->ntm_uid; 256 args->gid = ntmp->ntm_gid; 257 args->mode = ntmp->ntm_mode; 258 args->flag = ntmp->ntm_flag; 259 #if defined(__FreeBSD__) 260 return copyout(args, data, sizeof(args)); 261 #else 262 *data_len = sizeof *args; 263 return 0; 264 #endif 265 } 266 /* 267 *** 268 * Mounting non-root file system or updating a file system 269 *** 270 */ 271 272 #if defined(__FreeBSD__) 273 /* copy in user arguments*/ 274 err = copyin(data, args, sizeof (struct ntfs_args)); 275 if (err) 276 return (err); /* can't get arguments*/ 277 #endif 278 279 /* 280 * If updating, check whether changing from read-only to 281 * read/write; if there is no device name, that's all we do. 282 */ 283 if (mp->mnt_flag & MNT_UPDATE) { 284 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 285 return (EINVAL); 286 } 287 288 /* 289 * Not an update, or updating the name: look up the name 290 * and verify that it refers to a sensible block device. 291 */ 292 #ifdef __FreeBSD__ 293 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec, p); 294 #else 295 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 296 #endif 297 err = namei(ndp); 298 if (err) { 299 /* can't get devvp!*/ 300 return (err); 301 } 302 303 devvp = ndp->ni_vp; 304 305 if (devvp->v_type != VBLK) { 306 err = ENOTBLK; 307 goto fail; 308 } 309 #ifdef __FreeBSD__ 310 if (bdevsw(devvp->v_rdev) == NULL) { 311 #else 312 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 313 #endif 314 err = ENXIO; 315 goto fail; 316 } 317 if (mp->mnt_flag & MNT_UPDATE) { 318 #if 0 319 /* 320 ******************** 321 * UPDATE 322 ******************** 323 */ 324 325 if (devvp != ntmp->um_devvp) { 326 err = EINVAL; /* needs translation */ 327 goto fail; 328 } 329 330 /* 331 * Update device name only on success 332 */ 333 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 334 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 335 if (err) 336 goto fail; 337 338 vrele(devvp); 339 #endif 340 } else { 341 /* 342 ******************** 343 * NEW MOUNT 344 ******************** 345 */ 346 347 /* 348 * Since this is a new mount, we want the names for 349 * the device and the mount point copied in. If an 350 * error occurs, the mountpoint is discarded by the 351 * upper level code. 352 */ 353 354 /* Save "last mounted on" info for mount point (NULL pad)*/ 355 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 356 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 357 if (err) 358 goto fail; 359 360 if (mp->mnt_flag & MNT_RDONLY) 361 flags = FREAD; 362 else 363 flags = FREAD|FWRITE; 364 err = VOP_OPEN(devvp, flags, FSCRED); 365 if (err) 366 goto fail; 367 err = ntfs_mountfs(devvp, mp, args, l); 368 if (err) { 369 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 370 (void)VOP_CLOSE(devvp, flags, NOCRED); 371 VOP_UNLOCK(devvp, 0); 372 goto fail; 373 } 374 } 375 376 #ifdef __FreeBSD__ 377 dostatvfs: 378 #endif 379 /* 380 * Initialize FS stat information in mount struct; uses both 381 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 382 * 383 * This code is common to root and non-root mounts 384 */ 385 (void)VFS_STATVFS(mp, &mp->mnt_stat); 386 return (err); 387 388 fail: 389 vrele(devvp); 390 return (err); 391 } 392 393 /* 394 * Common code for mount and mountroot 395 */ 396 int 397 ntfs_mountfs(devvp, mp, argsp, l) 398 struct vnode *devvp; 399 struct mount *mp; 400 struct ntfs_args *argsp; 401 struct lwp *l; 402 { 403 struct buf *bp; 404 struct ntfsmount *ntmp; 405 dev_t dev = devvp->v_rdev; 406 int error, ronly, i; 407 struct vnode *vp; 408 409 ntmp = NULL; 410 411 /* 412 * Flush out any old buffers remaining from a previous use. 413 */ 414 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 415 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 416 VOP_UNLOCK(devvp, 0); 417 if (error) 418 return (error); 419 420 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 421 422 bp = NULL; 423 424 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 425 if (error) 426 goto out; 427 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 428 bzero( ntmp, sizeof *ntmp ); 429 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 430 brelse( bp , 0 ); 431 bp = NULL; 432 433 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 434 error = EINVAL; 435 dprintf(("ntfs_mountfs: invalid boot block\n")); 436 goto out; 437 } 438 439 { 440 int8_t cpr = ntmp->ntm_mftrecsz; 441 if( cpr > 0 ) 442 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 443 else 444 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 445 } 446 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 447 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 448 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 449 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 450 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 451 452 ntmp->ntm_mountp = mp; 453 ntmp->ntm_dev = dev; 454 ntmp->ntm_devvp = devvp; 455 ntmp->ntm_uid = argsp->uid; 456 ntmp->ntm_gid = argsp->gid; 457 ntmp->ntm_mode = argsp->mode; 458 ntmp->ntm_flag = argsp->flag; 459 mp->mnt_data = ntmp; 460 461 /* set file name encode/decode hooks XXX utf-8 only for now */ 462 ntmp->ntm_wget = ntfs_utf8_wget; 463 ntmp->ntm_wput = ntfs_utf8_wput; 464 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 465 466 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 467 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 468 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 469 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 470 471 /* 472 * We read in some system nodes to do not allow 473 * reclaim them and to have everytime access to them. 474 */ 475 { 476 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 477 for (i=0; i<3; i++) { 478 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 479 if(error) 480 goto out1; 481 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 482 VREF(ntmp->ntm_sysvn[pi[i]]); 483 vput(ntmp->ntm_sysvn[pi[i]]); 484 } 485 } 486 487 /* read the Unicode lowercase --> uppercase translation table, 488 * if necessary */ 489 if ((error = ntfs_toupper_use(mp, ntmp))) 490 goto out1; 491 492 /* 493 * Scan $BitMap and count free clusters 494 */ 495 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 496 if(error) 497 goto out1; 498 499 /* 500 * Read and translate to internal format attribute 501 * definition file. 502 */ 503 { 504 int num,j; 505 struct attrdef ad; 506 507 /* Open $AttrDef */ 508 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 509 if(error) 510 goto out1; 511 512 /* Count valid entries */ 513 for(num=0;;num++) { 514 error = ntfs_readattr(ntmp, VTONT(vp), 515 NTFS_A_DATA, NULL, 516 num * sizeof(ad), sizeof(ad), 517 &ad, NULL); 518 if (error) 519 goto out1; 520 if (ad.ad_name[0] == 0) 521 break; 522 } 523 524 /* Alloc memory for attribute definitions */ 525 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 526 num * sizeof(struct ntvattrdef), 527 M_NTFSMNT, M_WAITOK); 528 529 ntmp->ntm_adnum = num; 530 531 /* Read them and translate */ 532 for(i=0;i<num;i++){ 533 error = ntfs_readattr(ntmp, VTONT(vp), 534 NTFS_A_DATA, NULL, 535 i * sizeof(ad), sizeof(ad), 536 &ad, NULL); 537 if (error) 538 goto out1; 539 j = 0; 540 do { 541 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 542 } while(ad.ad_name[j++]); 543 ntmp->ntm_ad[i].ad_namelen = j - 1; 544 ntmp->ntm_ad[i].ad_type = ad.ad_type; 545 } 546 547 vput(vp); 548 } 549 550 #if defined(__FreeBSD__) 551 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 552 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 553 #else 554 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 555 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 556 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 557 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 558 #endif 559 mp->mnt_flag |= MNT_LOCAL; 560 devvp->v_specmountpoint = mp; 561 return (0); 562 563 out1: 564 for(i=0;i<NTFS_SYSNODESNUM;i++) 565 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 566 567 if (vflush(mp,NULLVP,0)) { 568 dprintf(("ntfs_mountfs: vflush failed\n")); 569 } 570 out: 571 devvp->v_specmountpoint = NULL; 572 if (bp) 573 brelse(bp, 0); 574 575 if (error) { 576 if (ntmp) { 577 if (ntmp->ntm_ad) 578 free(ntmp->ntm_ad, M_NTFSMNT); 579 free(ntmp, M_NTFSMNT); 580 } 581 } 582 583 return (error); 584 } 585 586 static int 587 ntfs_start ( 588 struct mount *mp, 589 int flags) 590 { 591 return (0); 592 } 593 594 static int 595 ntfs_unmount( 596 struct mount *mp, 597 int mntflags) 598 { 599 struct lwp *l = curlwp; 600 struct ntfsmount *ntmp; 601 int error, ronly = 0, flags, i; 602 603 dprintf(("ntfs_unmount: unmounting...\n")); 604 ntmp = VFSTONTFS(mp); 605 606 flags = 0; 607 if(mntflags & MNT_FORCE) 608 flags |= FORCECLOSE; 609 610 dprintf(("ntfs_unmount: vflushing...\n")); 611 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 612 if (error) { 613 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 614 return (error); 615 } 616 617 /* Check if only system vnodes are rest */ 618 for(i=0;i<NTFS_SYSNODESNUM;i++) 619 if((ntmp->ntm_sysvn[i]) && 620 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 621 622 /* Dereference all system vnodes */ 623 for(i=0;i<NTFS_SYSNODESNUM;i++) 624 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 625 626 /* vflush system vnodes */ 627 error = vflush(mp,NULLVP,flags); 628 if (error) { 629 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 630 } 631 632 /* Check if the type of device node isn't VBAD before 633 * touching v_specinfo. If the device vnode is revoked, the 634 * field is NULL and touching it causes null pointer derefercence. 635 */ 636 if (ntmp->ntm_devvp->v_type != VBAD) 637 ntmp->ntm_devvp->v_specmountpoint = NULL; 638 639 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 640 641 /* lock the device vnode before calling VOP_CLOSE() */ 642 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 643 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 644 NOCRED); 645 KASSERT(error == 0); 646 VOP_UNLOCK(ntmp->ntm_devvp, 0); 647 648 vrele(ntmp->ntm_devvp); 649 650 /* free the toupper table, if this has been last mounted ntfs volume */ 651 ntfs_toupper_unuse(); 652 653 dprintf(("ntfs_umount: freeing memory...\n")); 654 mp->mnt_data = NULL; 655 mp->mnt_flag &= ~MNT_LOCAL; 656 free(ntmp->ntm_ad, M_NTFSMNT); 657 FREE(ntmp, M_NTFSMNT); 658 return (0); 659 } 660 661 static int 662 ntfs_root( 663 struct mount *mp, 664 struct vnode **vpp) 665 { 666 struct vnode *nvp; 667 int error = 0; 668 669 dprintf(("ntfs_root(): sysvn: %p\n", 670 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 671 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 672 if(error) { 673 printf("ntfs_root: VFS_VGET failed: %d\n",error); 674 return (error); 675 } 676 677 *vpp = nvp; 678 return (0); 679 } 680 681 int 682 ntfs_calccfree( 683 struct ntfsmount *ntmp, 684 cn_t *cfreep) 685 { 686 struct vnode *vp; 687 u_int8_t *tmp; 688 int j, error; 689 cn_t cfree = 0; 690 size_t bmsize, i; 691 692 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 693 694 bmsize = VTOF(vp)->f_size; 695 696 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 697 698 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 699 0, bmsize, tmp, NULL); 700 if (error) 701 goto out; 702 703 for(i=0;i<bmsize;i++) 704 for(j=0;j<8;j++) 705 if(~tmp[i] & (1 << j)) cfree++; 706 *cfreep = cfree; 707 708 out: 709 free(tmp, M_TEMP); 710 return(error); 711 } 712 713 static int 714 ntfs_statvfs( 715 struct mount *mp, 716 struct statvfs *sbp) 717 { 718 struct ntfsmount *ntmp = VFSTONTFS(mp); 719 u_int64_t mftallocated; 720 721 dprintf(("ntfs_statvfs():\n")); 722 723 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 724 725 #if defined(__FreeBSD__) 726 sbp->f_type = mp->mnt_vfc->vfc_typenum; 727 #endif 728 sbp->f_bsize = ntmp->ntm_bps; 729 sbp->f_frsize = sbp->f_bsize; /* XXX */ 730 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 731 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 732 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 733 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 734 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 735 sbp->f_ffree; 736 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 737 sbp->f_flag = mp->mnt_flag; 738 copy_statvfs_info(sbp, mp); 739 return (0); 740 } 741 742 static int 743 ntfs_sync ( 744 struct mount *mp, 745 int waitfor, 746 kauth_cred_t cred) 747 { 748 /*dprintf(("ntfs_sync():\n"));*/ 749 return (0); 750 } 751 752 /*ARGSUSED*/ 753 static int 754 ntfs_fhtovp( 755 #if defined(__FreeBSD__) 756 struct mount *mp, 757 struct fid *fhp, 758 struct sockaddr *nam, 759 struct vnode **vpp, 760 int *exflagsp, 761 struct ucred **credanonp) 762 #elif defined(__NetBSD__) 763 struct mount *mp, 764 struct fid *fhp, 765 struct vnode **vpp) 766 #else 767 struct mount *mp, 768 struct fid *fhp, 769 struct mbuf *nam, 770 struct vnode **vpp, 771 int *exflagsp, 772 struct ucred **credanonp) 773 #endif 774 { 775 struct ntfid ntfh; 776 int error; 777 778 if (fhp->fid_len != sizeof(struct ntfid)) 779 return EINVAL; 780 memcpy(&ntfh, fhp, sizeof(ntfh)); 781 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 782 (unsigned long long)ntfh.ntfid_ino)); 783 784 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 785 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 786 if (error != 0) { 787 *vpp = NULLVP; 788 return (error); 789 } 790 791 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 792 * with NTFS, we don't need to check anything else for now */ 793 return (0); 794 } 795 796 static int 797 ntfs_vptofh( 798 struct vnode *vp, 799 struct fid *fhp, 800 size_t *fh_size) 801 { 802 struct ntnode *ntp; 803 struct ntfid ntfh; 804 struct fnode *fn; 805 806 if (*fh_size < sizeof(struct ntfid)) { 807 *fh_size = sizeof(struct ntfid); 808 return E2BIG; 809 } 810 *fh_size = sizeof(struct ntfid); 811 812 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 813 vp)); 814 815 fn = VTOF(vp); 816 ntp = VTONT(vp); 817 memset(&ntfh, 0, sizeof(ntfh)); 818 ntfh.ntfid_len = sizeof(struct ntfid); 819 ntfh.ntfid_ino = ntp->i_number; 820 ntfh.ntfid_attr = fn->f_attrtype; 821 #ifdef notyet 822 ntfh.ntfid_gen = ntp->i_gen; 823 #endif 824 memcpy(fhp, &ntfh, sizeof(ntfh)); 825 return (0); 826 } 827 828 int 829 ntfs_vgetex( 830 struct mount *mp, 831 ino_t ino, 832 u_int32_t attrtype, 833 char *attrname, 834 u_long lkflags, 835 u_long flags, 836 struct vnode **vpp) 837 { 838 int error; 839 struct ntfsmount *ntmp; 840 struct ntnode *ip; 841 struct fnode *fp; 842 struct vnode *vp; 843 enum vtype f_type = VBAD; 844 845 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 846 " 0x%lx\n", (unsigned long long)ino, attrtype, 847 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 848 849 ntmp = VFSTONTFS(mp); 850 *vpp = NULL; 851 852 /* Get ntnode */ 853 error = ntfs_ntlookup(ntmp, ino, &ip); 854 if (error) { 855 printf("ntfs_vget: ntfs_ntget failed\n"); 856 return (error); 857 } 858 859 /* It may be not initialized fully, so force load it */ 860 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 861 error = ntfs_loadntnode(ntmp, ip); 862 if(error) { 863 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 864 " %llu\n", (unsigned long long)ip->i_number); 865 ntfs_ntput(ip); 866 return (error); 867 } 868 } 869 870 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 871 if (error) { 872 printf("ntfs_vget: ntfs_fget failed\n"); 873 ntfs_ntput(ip); 874 return (error); 875 } 876 877 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 878 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 879 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 880 f_type = VDIR; 881 } else if (flags & VG_EXT) { 882 f_type = VNON; 883 fp->f_size = fp->f_allocated = 0; 884 } else { 885 f_type = VREG; 886 887 error = ntfs_filesize(ntmp, fp, 888 &fp->f_size, &fp->f_allocated); 889 if (error) { 890 ntfs_ntput(ip); 891 return (error); 892 } 893 } 894 895 fp->f_flag |= FN_VALID; 896 } 897 898 /* 899 * We may be calling vget() now. To avoid potential deadlock, we need 900 * to release ntnode lock, since due to locking order vnode 901 * lock has to be acquired first. 902 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 903 * prematurely. 904 */ 905 ntfs_ntput(ip); 906 907 if (FTOV(fp)) { 908 /* vget() returns error if the vnode has been recycled */ 909 if (vget(FTOV(fp), lkflags) == 0) { 910 *vpp = FTOV(fp); 911 return (0); 912 } 913 } 914 915 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 916 if(error) { 917 ntfs_frele(fp); 918 ntfs_ntput(ip); 919 return (error); 920 } 921 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 922 (unsigned long long)ino)); 923 924 #ifdef __FreeBSD__ 925 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 926 #endif 927 fp->f_vp = vp; 928 vp->v_data = fp; 929 if (f_type != VBAD) 930 vp->v_type = f_type; 931 932 if (ino == NTFS_ROOTINO) 933 vp->v_vflag |= VV_ROOT; 934 935 if (lkflags & LK_TYPE_MASK) { 936 error = vn_lock(vp, lkflags); 937 if (error) { 938 vput(vp); 939 return (error); 940 } 941 } 942 943 genfs_node_init(vp, &ntfs_genfsops); 944 uvm_vnp_setsize(vp, 0); /* XXX notused */ 945 VREF(ip->i_devvp); 946 *vpp = vp; 947 return (0); 948 } 949 950 static int 951 ntfs_vget( 952 struct mount *mp, 953 ino_t ino, 954 struct vnode **vpp) 955 { 956 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 957 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 958 } 959 960 #if defined(__FreeBSD__) 961 static struct vfsops ntfs_vfsops = { 962 ntfs_mount, 963 ntfs_start, 964 ntfs_unmount, 965 ntfs_root, 966 ntfs_quotactl, 967 ntfs_statvfs, 968 ntfs_sync, 969 ntfs_vget, 970 ntfs_fhtovp, 971 ntfs_vptofh, 972 ntfs_init, 973 NULL 974 }; 975 VFS_SET(ntfs_vfsops, ntfs, 0); 976 #elif defined(__NetBSD__) 977 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 978 979 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 980 &ntfs_vnodeop_opv_desc, 981 NULL, 982 }; 983 984 struct vfsops ntfs_vfsops = { 985 MOUNT_NTFS, 986 #if !defined(__FreeBSD__) 987 sizeof (struct ntfs_args), 988 #endif 989 ntfs_mount, 990 ntfs_start, 991 ntfs_unmount, 992 ntfs_root, 993 (void *)eopnotsupp, /* vfs_quotactl */ 994 ntfs_statvfs, 995 ntfs_sync, 996 ntfs_vget, 997 ntfs_fhtovp, 998 ntfs_vptofh, 999 ntfs_init, 1000 ntfs_reinit, 1001 ntfs_done, 1002 ntfs_mountroot, 1003 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1004 vfs_stdextattrctl, 1005 (void *)eopnotsupp, /* vfs_suspendctl */ 1006 genfs_renamelock_enter, 1007 genfs_renamelock_exit, 1008 ntfs_vnodeopv_descs, 1009 0, 1010 { NULL, NULL }, 1011 }; 1012 VFS_ATTACH(ntfs_vfsops); 1013 #endif 1014
Indexes created Tue Sep 23 23:09:58 GMT 2025