ntfs_vfsops.c revision 1.37
1 /* $NetBSD: ntfs_vfsops.c,v 1.37 2006/02/21 04:32:39 thorpej 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 1.37 2006/02/21 04:32:39 thorpej 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 48 #if defined(__NetBSD__) 49 #include <uvm/uvm_extern.h> 50 #else 51 #include <vm/vm.h> 52 #endif 53 54 #include <miscfs/specfs/specdev.h> 55 56 #include <fs/ntfs/ntfs.h> 57 #include <fs/ntfs/ntfs_inode.h> 58 #include <fs/ntfs/ntfs_subr.h> 59 #include <fs/ntfs/ntfs_vfsops.h> 60 #include <fs/ntfs/ntfs_ihash.h> 61 #include <fs/ntfs/ntfsmount.h> 62 63 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 64 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 65 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 66 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 67 68 #if defined(__FreeBSD__) 69 static int ntfs_mount(struct mount *, char *, caddr_t, 70 struct nameidata *, struct proc *); 71 #else 72 static int ntfs_mount(struct mount *, const char *, void *, 73 struct nameidata *, struct lwp *); 74 #endif 75 static int ntfs_quotactl(struct mount *, int, uid_t, void *, 76 struct lwp *); 77 static int ntfs_root(struct mount *, struct vnode **); 78 static int ntfs_start(struct mount *, int, struct lwp *); 79 static int ntfs_statvfs(struct mount *, struct statvfs *, 80 struct lwp *); 81 static int ntfs_sync(struct mount *, int, struct ucred *, 82 struct lwp *); 83 static int ntfs_unmount(struct mount *, int, struct lwp *); 84 static int ntfs_vget(struct mount *mp, ino_t ino, 85 struct vnode **vpp); 86 static int ntfs_mountfs(struct vnode *, struct mount *, 87 struct ntfs_args *, struct lwp *); 88 static int ntfs_vptofh(struct vnode *, struct fid *); 89 90 #if defined(__FreeBSD__) 91 static int ntfs_init(struct vfsconf *); 92 static int ntfs_fhtovp(struct mount *, struct fid *, 93 struct sockaddr *, struct vnode **, 94 int *, struct ucred **); 95 #elif defined(__NetBSD__) 96 static void ntfs_init(void); 97 static void ntfs_reinit(void); 98 static void ntfs_done(void); 99 static int ntfs_fhtovp(struct mount *, struct fid *, 100 struct vnode **); 101 static int ntfs_mountroot(void); 102 #else 103 static int ntfs_init(void); 104 static int ntfs_fhtovp(struct mount *, struct fid *, 105 struct mbuf *, struct vnode **, 106 int *, struct ucred **); 107 #endif 108 109 static const struct genfs_ops ntfs_genfsops = { 110 .gop_write = genfs_compat_gop_write, 111 }; 112 113 #ifdef __NetBSD__ 114 115 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 116 { 117 118 sysctl_createv(clog, 0, NULL, NULL, 119 CTLFLAG_PERMANENT, 120 CTLTYPE_NODE, "vfs", NULL, 121 NULL, 0, NULL, 0, 122 CTL_VFS, CTL_EOL); 123 sysctl_createv(clog, 0, NULL, NULL, 124 CTLFLAG_PERMANENT, 125 CTLTYPE_NODE, "ntfs", 126 SYSCTL_DESCR("NTFS file system"), 127 NULL, 0, NULL, 0, 128 CTL_VFS, 20, CTL_EOL); 129 /* 130 * XXX the "20" above could be dynamic, thereby eliminating 131 * one more instance of the "number to vfs" mapping problem, 132 * but "20" is the order as taken from sys/mount.h 133 */ 134 } 135 136 static int 137 ntfs_mountroot() 138 { 139 struct mount *mp; 140 struct lwp *l = curlwp; /* XXX */ 141 int error; 142 struct ntfs_args args; 143 144 if (device_class(root_device) != DV_DISK) 145 return (ENODEV); 146 147 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 148 vrele(rootvp); 149 return (error); 150 } 151 152 args.flag = 0; 153 args.uid = 0; 154 args.gid = 0; 155 args.mode = 0777; 156 157 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 158 mp->mnt_op->vfs_refcount--; 159 vfs_unbusy(mp); 160 free(mp, M_MOUNT); 161 return (error); 162 } 163 164 simple_lock(&mountlist_slock); 165 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 166 simple_unlock(&mountlist_slock); 167 (void)ntfs_statvfs(mp, &mp->mnt_stat, l); 168 vfs_unbusy(mp); 169 return (0); 170 } 171 172 static void 173 ntfs_init() 174 { 175 #ifdef _LKM 176 malloc_type_attach(M_NTFSMNT); 177 malloc_type_attach(M_NTFSNTNODE); 178 malloc_type_attach(M_NTFSFNODE); 179 malloc_type_attach(M_NTFSDIR); 180 malloc_type_attach(M_NTFSNTHASH); 181 malloc_type_attach(M_NTFSNTVATTR); 182 malloc_type_attach(M_NTFSRDATA); 183 malloc_type_attach(M_NTFSDECOMP); 184 malloc_type_attach(M_NTFSRUN); 185 #endif 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 #ifdef _LKM 201 malloc_type_detach(M_NTFSMNT); 202 malloc_type_detach(M_NTFSNTNODE); 203 malloc_type_detach(M_NTFSFNODE); 204 malloc_type_detach(M_NTFSDIR); 205 malloc_type_detach(M_NTFSNTHASH); 206 malloc_type_detach(M_NTFSNTVATTR); 207 malloc_type_detach(M_NTFSRDATA); 208 malloc_type_detach(M_NTFSDECOMP); 209 malloc_type_detach(M_NTFSRUN); 210 #endif 211 } 212 213 #elif defined(__FreeBSD__) 214 215 static int 216 ntfs_init ( 217 struct vfsconf *vcp ) 218 { 219 ntfs_nthashinit(); 220 ntfs_toupper_init(); 221 return 0; 222 } 223 224 #endif /* NetBSD */ 225 226 static int 227 ntfs_mount ( 228 struct mount *mp, 229 #if defined(__FreeBSD__) 230 char *path, 231 caddr_t data, 232 #else 233 const char *path, 234 void *data, 235 #endif 236 struct nameidata *ndp, 237 #if defined(__FreeBSD__) 238 struct proc *p ) 239 #else 240 struct lwp *l ) 241 #endif 242 { 243 int err = 0, flags; 244 struct vnode *devvp; 245 struct ntfs_args args; 246 247 if (mp->mnt_flag & MNT_GETARGS) { 248 struct ntfsmount *ntmp = VFSTONTFS(mp); 249 if (ntmp == NULL) 250 return EIO; 251 args.fspec = NULL; 252 args.uid = ntmp->ntm_uid; 253 args.gid = ntmp->ntm_gid; 254 args.mode = ntmp->ntm_mode; 255 args.flag = ntmp->ntm_flag; 256 return copyout(&args, data, sizeof(args)); 257 } 258 /* 259 *** 260 * Mounting non-root file system or updating a file system 261 *** 262 */ 263 264 /* copy in user arguments*/ 265 err = copyin(data, &args, sizeof (struct ntfs_args)); 266 if (err) 267 return (err); /* can't get arguments*/ 268 269 /* 270 * If updating, check whether changing from read-only to 271 * read/write; if there is no device name, that's all we do. 272 */ 273 if (mp->mnt_flag & MNT_UPDATE) { 274 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 275 return (EINVAL); 276 } 277 278 /* 279 * Not an update, or updating the name: look up the name 280 * and verify that it refers to a sensible block device. 281 */ 282 #ifdef __FreeBSD__ 283 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 284 #else 285 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 286 #endif 287 err = namei(ndp); 288 if (err) { 289 /* can't get devvp!*/ 290 return (err); 291 } 292 293 devvp = ndp->ni_vp; 294 295 if (devvp->v_type != VBLK) { 296 err = ENOTBLK; 297 goto fail; 298 } 299 #ifdef __FreeBSD__ 300 if (bdevsw(devvp->v_rdev) == NULL) { 301 #else 302 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 303 #endif 304 err = ENXIO; 305 goto fail; 306 } 307 if (mp->mnt_flag & MNT_UPDATE) { 308 #if 0 309 /* 310 ******************** 311 * UPDATE 312 ******************** 313 */ 314 315 if (devvp != ntmp->um_devvp) { 316 err = EINVAL; /* needs translation */ 317 goto fail; 318 } 319 320 /* 321 * Update device name only on success 322 */ 323 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 324 UIO_USERSPACE, mp, p); 325 if (err) 326 goto fail; 327 328 vrele(devvp); 329 #endif 330 } else { 331 /* 332 ******************** 333 * NEW MOUNT 334 ******************** 335 */ 336 337 /* 338 * Since this is a new mount, we want the names for 339 * the device and the mount point copied in. If an 340 * error occurs, the mountpoint is discarded by the 341 * upper level code. 342 */ 343 344 /* Save "last mounted on" info for mount point (NULL pad)*/ 345 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 346 UIO_USERSPACE, mp, l); 347 if (err) 348 goto fail; 349 350 /* 351 * Disallow multiple mounts of the same device. 352 * Disallow mounting of a device that is currently in use 353 * (except for root, which might share swap device for 354 * miniroot). 355 */ 356 err = vfs_mountedon(devvp); 357 if (err) 358 goto fail; 359 if (vcount(devvp) > 1 && devvp != rootvp) { 360 err = EBUSY; 361 goto fail; 362 } 363 if (mp->mnt_flag & MNT_RDONLY) 364 flags = FREAD; 365 else 366 flags = FREAD|FWRITE; 367 err = VOP_OPEN(devvp, flags, FSCRED, l); 368 if (err) 369 goto fail; 370 err = ntfs_mountfs(devvp, mp, &args, l); 371 if (err) { 372 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 373 (void)VOP_CLOSE(devvp, flags, NOCRED, l); 374 VOP_UNLOCK(devvp, 0); 375 goto fail; 376 } 377 } 378 379 #ifdef __FreeBSD__ 380 dostatvfs: 381 #endif 382 /* 383 * Initialize FS stat information in mount struct; uses both 384 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 385 * 386 * This code is common to root and non-root mounts 387 */ 388 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 389 return (err); 390 391 fail: 392 vrele(devvp); 393 return (err); 394 } 395 396 /* 397 * Common code for mount and mountroot 398 */ 399 int 400 ntfs_mountfs(devvp, mp, argsp, l) 401 struct vnode *devvp; 402 struct mount *mp; 403 struct ntfs_args *argsp; 404 struct lwp *l; 405 { 406 struct buf *bp; 407 struct ntfsmount *ntmp; 408 dev_t dev = devvp->v_rdev; 409 int error, ronly, i; 410 struct vnode *vp; 411 412 /* 413 * Flush out any old buffers remaining from a previous use. 414 */ 415 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 416 error = vinvalbuf(devvp, V_SAVE, l->l_proc->p_ucred, l, 0, 0); 417 VOP_UNLOCK(devvp, 0); 418 if (error) 419 return (error); 420 421 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 422 423 bp = NULL; 424 425 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 426 if (error) 427 goto out; 428 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 429 bzero( ntmp, sizeof *ntmp ); 430 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 431 brelse( bp ); 432 bp = NULL; 433 434 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 435 error = EINVAL; 436 dprintf(("ntfs_mountfs: invalid boot block\n")); 437 goto out; 438 } 439 440 { 441 int8_t cpr = ntmp->ntm_mftrecsz; 442 if( cpr > 0 ) 443 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 444 else 445 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 446 } 447 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 448 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 449 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 450 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 451 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 452 453 ntmp->ntm_mountp = mp; 454 ntmp->ntm_dev = dev; 455 ntmp->ntm_devvp = devvp; 456 ntmp->ntm_uid = argsp->uid; 457 ntmp->ntm_gid = argsp->gid; 458 ntmp->ntm_mode = argsp->mode; 459 ntmp->ntm_flag = argsp->flag; 460 mp->mnt_data = ntmp; 461 462 /* set file name encode/decode hooks XXX utf-8 only for now */ 463 ntmp->ntm_wget = ntfs_utf8_wget; 464 ntmp->ntm_wput = ntfs_utf8_wput; 465 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 466 467 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 468 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 469 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 470 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 471 472 /* 473 * We read in some system nodes to do not allow 474 * reclaim them and to have everytime access to them. 475 */ 476 { 477 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 478 for (i=0; i<3; i++) { 479 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 480 if(error) 481 goto out1; 482 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 483 VREF(ntmp->ntm_sysvn[pi[i]]); 484 vput(ntmp->ntm_sysvn[pi[i]]); 485 } 486 } 487 488 /* read the Unicode lowercase --> uppercase translation table, 489 * if necessary */ 490 if ((error = ntfs_toupper_use(mp, ntmp))) 491 goto out1; 492 493 /* 494 * Scan $BitMap and count free clusters 495 */ 496 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 497 if(error) 498 goto out1; 499 500 /* 501 * Read and translate to internal format attribute 502 * definition file. 503 */ 504 { 505 int num,j; 506 struct attrdef ad; 507 508 /* Open $AttrDef */ 509 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 510 if(error) 511 goto out1; 512 513 /* Count valid entries */ 514 for(num=0;;num++) { 515 error = ntfs_readattr(ntmp, VTONT(vp), 516 NTFS_A_DATA, NULL, 517 num * sizeof(ad), sizeof(ad), 518 &ad, NULL); 519 if (error) 520 goto out1; 521 if (ad.ad_name[0] == 0) 522 break; 523 } 524 525 /* Alloc memory for attribute definitions */ 526 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 527 num * sizeof(struct ntvattrdef), 528 M_NTFSMNT, M_WAITOK); 529 530 ntmp->ntm_adnum = num; 531 532 /* Read them and translate */ 533 for(i=0;i<num;i++){ 534 error = ntfs_readattr(ntmp, VTONT(vp), 535 NTFS_A_DATA, NULL, 536 i * sizeof(ad), sizeof(ad), 537 &ad, NULL); 538 if (error) 539 goto out1; 540 j = 0; 541 do { 542 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 543 } while(ad.ad_name[j++]); 544 ntmp->ntm_ad[i].ad_namelen = j - 1; 545 ntmp->ntm_ad[i].ad_type = ad.ad_type; 546 } 547 548 vput(vp); 549 } 550 551 #if defined(__FreeBSD__) 552 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 553 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 554 #else 555 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 556 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 557 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 558 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 559 #endif 560 mp->mnt_flag |= MNT_LOCAL; 561 devvp->v_specmountpoint = mp; 562 return (0); 563 564 out1: 565 for(i=0;i<NTFS_SYSNODESNUM;i++) 566 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 567 568 if (vflush(mp,NULLVP,0)) 569 dprintf(("ntfs_mountfs: vflush failed\n")); 570 571 out: 572 devvp->v_specmountpoint = NULL; 573 if (bp) 574 brelse(bp); 575 576 return (error); 577 } 578 579 static int 580 ntfs_start ( 581 struct mount *mp, 582 int flags, 583 struct lwp *l ) 584 { 585 return (0); 586 } 587 588 static int 589 ntfs_unmount( 590 struct mount *mp, 591 int mntflags, 592 struct lwp *l) 593 { 594 struct ntfsmount *ntmp; 595 int error, ronly = 0, flags, i; 596 597 dprintf(("ntfs_unmount: unmounting...\n")); 598 ntmp = VFSTONTFS(mp); 599 600 flags = 0; 601 if(mntflags & MNT_FORCE) 602 flags |= FORCECLOSE; 603 604 dprintf(("ntfs_unmount: vflushing...\n")); 605 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 606 if (error) { 607 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 608 return (error); 609 } 610 611 /* Check if only system vnodes are rest */ 612 for(i=0;i<NTFS_SYSNODESNUM;i++) 613 if((ntmp->ntm_sysvn[i]) && 614 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 615 616 /* Dereference all system vnodes */ 617 for(i=0;i<NTFS_SYSNODESNUM;i++) 618 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 619 620 /* vflush system vnodes */ 621 error = vflush(mp,NULLVP,flags); 622 if (error) { 623 /* XXX should this be panic() ? */ 624 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 625 } 626 627 /* Check if the type of device node isn't VBAD before 628 * touching v_specinfo. If the device vnode is revoked, the 629 * field is NULL and touching it causes null pointer derefercence. 630 */ 631 if (ntmp->ntm_devvp->v_type != VBAD) 632 ntmp->ntm_devvp->v_specmountpoint = NULL; 633 634 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 635 636 /* lock the device vnode before calling VOP_CLOSE() */ 637 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 638 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 639 NOCRED, l); 640 VOP_UNLOCK(ntmp->ntm_devvp, 0); 641 642 vrele(ntmp->ntm_devvp); 643 644 /* free the toupper table, if this has been last mounted ntfs volume */ 645 ntfs_toupper_unuse(); 646 647 dprintf(("ntfs_umount: freeing memory...\n")); 648 mp->mnt_data = NULL; 649 mp->mnt_flag &= ~MNT_LOCAL; 650 free(ntmp->ntm_ad, M_NTFSMNT); 651 FREE(ntmp, M_NTFSMNT); 652 return (error); 653 } 654 655 static int 656 ntfs_root( 657 struct mount *mp, 658 struct vnode **vpp) 659 { 660 struct vnode *nvp; 661 int error = 0; 662 663 dprintf(("ntfs_root(): sysvn: %p\n", 664 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 665 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 666 if(error) { 667 printf("ntfs_root: VFS_VGET failed: %d\n",error); 668 return (error); 669 } 670 671 *vpp = nvp; 672 return (0); 673 } 674 675 /* 676 * Do operations associated with quotas, not supported 677 */ 678 /* ARGSUSED */ 679 static int 680 ntfs_quotactl ( 681 struct mount *mp, 682 int cmds, 683 uid_t uid, 684 void *arg, 685 struct lwp *l) 686 { 687 688 return EOPNOTSUPP; 689 } 690 691 int 692 ntfs_calccfree( 693 struct ntfsmount *ntmp, 694 cn_t *cfreep) 695 { 696 struct vnode *vp; 697 u_int8_t *tmp; 698 int j, error; 699 cn_t cfree = 0; 700 size_t bmsize, i; 701 702 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 703 704 bmsize = VTOF(vp)->f_size; 705 706 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 707 708 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 709 0, bmsize, tmp, NULL); 710 if (error) 711 goto out; 712 713 for(i=0;i<bmsize;i++) 714 for(j=0;j<8;j++) 715 if(~tmp[i] & (1 << j)) cfree++; 716 *cfreep = cfree; 717 718 out: 719 free(tmp, M_TEMP); 720 return(error); 721 } 722 723 static int 724 ntfs_statvfs( 725 struct mount *mp, 726 struct statvfs *sbp, 727 struct lwp *l) 728 { 729 struct ntfsmount *ntmp = VFSTONTFS(mp); 730 u_int64_t mftallocated; 731 732 dprintf(("ntfs_statvfs():\n")); 733 734 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 735 736 #if defined(__FreeBSD__) 737 sbp->f_type = mp->mnt_vfc->vfc_typenum; 738 #endif 739 sbp->f_bsize = ntmp->ntm_bps; 740 sbp->f_frsize = sbp->f_bsize; /* XXX */ 741 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 742 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 743 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 744 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 745 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 746 sbp->f_ffree; 747 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 748 sbp->f_flag = mp->mnt_flag; 749 copy_statvfs_info(sbp, mp); 750 return (0); 751 } 752 753 static int 754 ntfs_sync ( 755 struct mount *mp, 756 int waitfor, 757 struct ucred *cred, 758 struct lwp *l) 759 { 760 /*dprintf(("ntfs_sync():\n"));*/ 761 return (0); 762 } 763 764 /*ARGSUSED*/ 765 static int 766 ntfs_fhtovp( 767 #if defined(__FreeBSD__) 768 struct mount *mp, 769 struct fid *fhp, 770 struct sockaddr *nam, 771 struct vnode **vpp, 772 int *exflagsp, 773 struct ucred **credanonp) 774 #elif defined(__NetBSD__) 775 struct mount *mp, 776 struct fid *fhp, 777 struct vnode **vpp) 778 #else 779 struct mount *mp, 780 struct fid *fhp, 781 struct mbuf *nam, 782 struct vnode **vpp, 783 int *exflagsp, 784 struct ucred **credanonp) 785 #endif 786 { 787 struct ntfid *ntfhp = (struct ntfid *)fhp; 788 int error; 789 790 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 791 (unsigned long long)ntfhp->ntfid_ino)); 792 793 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 794 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 795 if (error != 0) { 796 *vpp = NULLVP; 797 return (error); 798 } 799 800 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 801 * with NTFS, we don't need to check anything else for now */ 802 return (0); 803 } 804 805 static int 806 ntfs_vptofh( 807 struct vnode *vp, 808 struct fid *fhp) 809 { 810 struct ntnode *ntp; 811 struct ntfid *ntfhp; 812 struct fnode *fn; 813 814 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 815 vp)); 816 817 fn = VTOF(vp); 818 ntp = VTONT(vp); 819 ntfhp = (struct ntfid *)fhp; 820 ntfhp->ntfid_len = sizeof(struct ntfid); 821 ntfhp->ntfid_ino = ntp->i_number; 822 ntfhp->ntfid_attr = fn->f_attrtype; 823 #ifdef notyet 824 ntfhp->ntfid_gen = ntp->i_gen; 825 #endif 826 return (0); 827 } 828 829 int 830 ntfs_vgetex( 831 struct mount *mp, 832 ino_t ino, 833 u_int32_t attrtype, 834 char *attrname, 835 u_long lkflags, 836 u_long flags, 837 struct vnode **vpp) 838 { 839 int error; 840 struct ntfsmount *ntmp; 841 struct ntnode *ip; 842 struct fnode *fp; 843 struct vnode *vp; 844 enum vtype f_type = VBAD; 845 846 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 847 " 0x%lx\n", (unsigned long long)ino, attrtype, 848 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 849 850 ntmp = VFSTONTFS(mp); 851 *vpp = NULL; 852 853 /* Get ntnode */ 854 error = ntfs_ntlookup(ntmp, ino, &ip); 855 if (error) { 856 printf("ntfs_vget: ntfs_ntget failed\n"); 857 return (error); 858 } 859 860 /* It may be not initialized fully, so force load it */ 861 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 862 error = ntfs_loadntnode(ntmp, ip); 863 if(error) { 864 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 865 " %llu\n", (unsigned long long)ip->i_number); 866 ntfs_ntput(ip); 867 return (error); 868 } 869 } 870 871 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 872 if (error) { 873 printf("ntfs_vget: ntfs_fget failed\n"); 874 ntfs_ntput(ip); 875 return (error); 876 } 877 878 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 879 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 880 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 881 f_type = VDIR; 882 } else if (flags & VG_EXT) { 883 f_type = VNON; 884 fp->f_size = fp->f_allocated = 0; 885 } else { 886 f_type = VREG; 887 888 error = ntfs_filesize(ntmp, fp, 889 &fp->f_size, &fp->f_allocated); 890 if (error) { 891 ntfs_ntput(ip); 892 return (error); 893 } 894 } 895 896 fp->f_flag |= FN_VALID; 897 } 898 899 /* 900 * We may be calling vget() now. To avoid potential deadlock, we need 901 * to release ntnode lock, since due to locking order vnode 902 * lock has to be acquired first. 903 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 904 * prematurely. 905 */ 906 ntfs_ntput(ip); 907 908 if (FTOV(fp)) { 909 /* vget() returns error if the vnode has been recycled */ 910 if (vget(FTOV(fp), lkflags) == 0) { 911 *vpp = FTOV(fp); 912 return (0); 913 } 914 } 915 916 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 917 if(error) { 918 ntfs_frele(fp); 919 ntfs_ntput(ip); 920 return (error); 921 } 922 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 923 (unsigned long long)ino)); 924 925 #ifdef __FreeBSD__ 926 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 927 #endif 928 fp->f_vp = vp; 929 vp->v_data = fp; 930 if (f_type != VBAD) 931 vp->v_type = f_type; 932 933 if (ino == NTFS_ROOTINO) 934 vp->v_flag |= VROOT; 935 936 if (lkflags & LK_TYPE_MASK) { 937 error = vn_lock(vp, lkflags); 938 if (error) { 939 vput(vp); 940 return (error); 941 } 942 } 943 944 genfs_node_init(vp, &ntfs_genfsops); 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 ntfs_mount, 987 ntfs_start, 988 ntfs_unmount, 989 ntfs_root, 990 ntfs_quotactl, 991 ntfs_statvfs, 992 ntfs_sync, 993 ntfs_vget, 994 ntfs_fhtovp, 995 ntfs_vptofh, 996 ntfs_init, 997 ntfs_reinit, 998 ntfs_done, 999 ntfs_mountroot, 1000 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1001 vfs_stdextattrctl, 1002 ntfs_vnodeopv_descs, 1003 }; 1004 VFS_ATTACH(ntfs_vfsops); 1005 #endif 1006
Indexes created Tue Sep 23 02:09:52 GMT 2025