ntfs_vfsops.c revision 1.10.2.4
1 /* $NetBSD: ntfs_vfsops.c,v 1.10.2.4 2004/08/25 06:58:58 skrll 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 1.10.2.4 2004/08/25 06:58:58 skrll 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 /*#define NTFS_DEBUG 1*/ 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_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 65 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 66 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 67 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 68 69 #if defined(__FreeBSD__) 70 static int ntfs_mount __P((struct mount *, char *, caddr_t, 71 struct nameidata *, struct proc *)); 72 #else 73 static int ntfs_mount __P((struct mount *, const char *, void *, 74 struct nameidata *, struct lwp *)); 75 #endif 76 static int ntfs_quotactl __P((struct mount *, int, uid_t, void *, 77 struct lwp *)); 78 static int ntfs_root __P((struct mount *, struct vnode **)); 79 static int ntfs_start __P((struct mount *, int, struct lwp *)); 80 static int ntfs_statvfs __P((struct mount *, struct statvfs *, 81 struct lwp *)); 82 static int ntfs_sync __P((struct mount *, int, struct ucred *, 83 struct lwp *)); 84 static int ntfs_unmount __P((struct mount *, int, struct lwp *)); 85 static int ntfs_vget __P((struct mount *mp, ino_t ino, 86 struct vnode **vpp)); 87 static int ntfs_mountfs __P((struct vnode *, struct mount *, 88 struct ntfs_args *, struct lwp *)); 89 static int ntfs_vptofh __P((struct vnode *, struct fid *)); 90 91 #if defined(__FreeBSD__) 92 static int ntfs_init __P((struct vfsconf *)); 93 static int ntfs_fhtovp __P((struct mount *, struct fid *, 94 struct sockaddr *, struct vnode **, 95 int *, struct ucred **)); 96 #elif defined(__NetBSD__) 97 static void ntfs_init __P((void)); 98 static void ntfs_reinit __P((void)); 99 static void ntfs_done __P((void)); 100 static int ntfs_fhtovp __P((struct mount *, struct fid *, 101 struct vnode **)); 102 static int ntfs_checkexp __P((struct mount *, struct mbuf *, 103 int *, struct ucred **)); 104 static int ntfs_mountroot __P((void)); 105 #else 106 static int ntfs_init __P((void)); 107 static int ntfs_fhtovp __P((struct mount *, struct fid *, 108 struct mbuf *, struct vnode **, 109 int *, struct ucred **)); 110 #endif 111 112 struct genfs_ops ntfs_genfsops = { 113 NULL, 114 NULL, 115 genfs_compat_gop_write, 116 }; 117 118 #ifdef __NetBSD__ 119 /* 120 * Verify a remote client has export rights and return these rights via. 121 * exflagsp and credanonp. 122 */ 123 static int 124 ntfs_checkexp(mp, nam, exflagsp, credanonp) 125 struct mount *mp; 126 struct mbuf *nam; 127 int *exflagsp; 128 struct ucred **credanonp; 129 { 130 struct netcred *np; 131 struct ntfsmount *ntm = VFSTONTFS(mp); 132 133 /* 134 * Get the export permission structure for this <mp, client> tuple. 135 */ 136 np = vfs_export_lookup(mp, &ntm->ntm_export, nam); 137 if (np == NULL) 138 return (EACCES); 139 140 *exflagsp = np->netc_exflags; 141 *credanonp = &np->netc_anon; 142 return (0); 143 } 144 145 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 146 { 147 148 sysctl_createv(clog, 0, NULL, NULL, 149 CTLFLAG_PERMANENT, 150 CTLTYPE_NODE, "vfs", NULL, 151 NULL, 0, NULL, 0, 152 CTL_VFS, CTL_EOL); 153 sysctl_createv(clog, 0, NULL, NULL, 154 CTLFLAG_PERMANENT, 155 CTLTYPE_NODE, "ntfs", 156 SYSCTL_DESCR("NTFS file system"), 157 NULL, 0, NULL, 0, 158 CTL_VFS, 20, CTL_EOL); 159 /* 160 * XXX the "20" above could be dynamic, thereby eliminating 161 * one more instance of the "number to vfs" mapping problem, 162 * but "20" is the order as taken from sys/mount.h 163 */ 164 } 165 166 static int 167 ntfs_mountroot() 168 { 169 struct mount *mp; 170 struct lwp *l = curlwp; /* XXX */ 171 int error; 172 struct ntfs_args args; 173 174 if (root_device->dv_class != DV_DISK) 175 return (ENODEV); 176 177 /* 178 * Get vnodes for rootdev. 179 */ 180 if (bdevvp(rootdev, &rootvp)) 181 panic("ntfs_mountroot: can't setup rootvp"); 182 183 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 184 vrele(rootvp); 185 return (error); 186 } 187 188 args.flag = 0; 189 args.uid = 0; 190 args.gid = 0; 191 args.mode = 0777; 192 193 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 194 mp->mnt_op->vfs_refcount--; 195 vfs_unbusy(mp); 196 free(mp, M_MOUNT); 197 vrele(rootvp); 198 return (error); 199 } 200 201 simple_lock(&mountlist_slock); 202 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 203 simple_unlock(&mountlist_slock); 204 (void)ntfs_statvfs(mp, &mp->mnt_stat, l); 205 vfs_unbusy(mp); 206 return (0); 207 } 208 209 static void 210 ntfs_init() 211 { 212 #ifdef _LKM 213 malloc_type_attach(M_NTFSMNT); 214 malloc_type_attach(M_NTFSNTNODE); 215 malloc_type_attach(M_NTFSFNODE); 216 malloc_type_attach(M_NTFSDIR); 217 malloc_type_attach(M_NTFSNTHASH); 218 malloc_type_attach(M_NTFSNTVATTR); 219 malloc_type_attach(M_NTFSRDATA); 220 malloc_type_attach(M_NTFSDECOMP); 221 malloc_type_attach(M_NTFSRUN); 222 #endif 223 ntfs_nthashinit(); 224 ntfs_toupper_init(); 225 } 226 227 static void 228 ntfs_reinit() 229 { 230 ntfs_nthashreinit(); 231 } 232 233 static void 234 ntfs_done() 235 { 236 ntfs_nthashdone(); 237 #ifdef _LKM 238 malloc_type_detach(M_NTFSMNT); 239 malloc_type_detach(M_NTFSNTNODE); 240 malloc_type_detach(M_NTFSFNODE); 241 malloc_type_detach(M_NTFSDIR); 242 malloc_type_detach(M_NTFSNTHASH); 243 malloc_type_detach(M_NTFSNTVATTR); 244 malloc_type_detach(M_NTFSRDATA); 245 malloc_type_detach(M_NTFSDECOMP); 246 malloc_type_detach(M_NTFSRUN); 247 #endif 248 } 249 250 #elif defined(__FreeBSD__) 251 252 static int 253 ntfs_init ( 254 struct vfsconf *vcp ) 255 { 256 ntfs_nthashinit(); 257 ntfs_toupper_init(); 258 return 0; 259 } 260 261 #endif /* NetBSD */ 262 263 static int 264 ntfs_mount ( 265 struct mount *mp, 266 #if defined(__FreeBSD__) 267 char *path, 268 caddr_t data, 269 #else 270 const char *path, 271 void *data, 272 #endif 273 struct nameidata *ndp, 274 #if defined(__FreeBSD__) 275 struct proc *p ) 276 #else 277 struct lwp *l ) 278 #endif 279 { 280 int err = 0; 281 struct vnode *devvp; 282 struct ntfs_args args; 283 284 #ifdef __FreeBSD__ 285 /* 286 * Use NULL path to flag a root mount 287 */ 288 if( path == NULL) { 289 /* 290 *** 291 * Mounting root file system 292 *** 293 */ 294 295 /* Get vnode for root device*/ 296 if( bdevvp( rootdev, &rootvp)) 297 panic("ffs_mountroot: can't setup bdevvp for root"); 298 299 /* 300 * FS specific handling 301 */ 302 mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/ 303 304 /* 305 * Attempt mount 306 */ 307 if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 308 /* fs specific cleanup (if any)*/ 309 goto error_1; 310 } 311 312 goto dostatvfs; /* success*/ 313 314 } 315 #endif /* FreeBSD */ 316 317 if (mp->mnt_flag & MNT_GETARGS) { 318 struct ntfsmount *ntmp = VFSTONTFS(mp); 319 if (ntmp == NULL) 320 return EIO; 321 args.fspec = NULL; 322 args.uid = ntmp->ntm_uid; 323 args.gid = ntmp->ntm_gid; 324 args.mode = ntmp->ntm_mode; 325 args.flag = ntmp->ntm_flag; 326 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 327 return copyout(&args, data, sizeof(args)); 328 } 329 /* 330 *** 331 * Mounting non-root file system or updating a file system 332 *** 333 */ 334 335 /* copy in user arguments*/ 336 err = copyin(data, &args, sizeof (struct ntfs_args)); 337 if (err) 338 goto error_1; /* can't get arguments*/ 339 340 /* 341 * If updating, check whether changing from read-only to 342 * read/write; if there is no device name, that's all we do. 343 */ 344 if (mp->mnt_flag & MNT_UPDATE) { 345 /* if not updating name...*/ 346 if (args.fspec == 0) { 347 /* 348 * Process export requests. Jumping to "success" 349 * will return the vfs_export() error code. 350 */ 351 struct ntfsmount *ntm = VFSTONTFS(mp); 352 err = vfs_export(mp, &ntm->ntm_export, &args.export); 353 goto success; 354 } 355 356 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 357 err = EINVAL; 358 goto error_1; 359 } 360 361 /* 362 * Not an update, or updating the name: look up the name 363 * and verify that it refers to a sensible block device. 364 */ 365 #ifdef __FreeBSD__ 366 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 367 #else 368 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 369 #endif 370 err = namei(ndp); 371 if (err) { 372 /* can't get devvp!*/ 373 goto error_1; 374 } 375 376 devvp = ndp->ni_vp; 377 378 if (devvp->v_type != VBLK) { 379 err = ENOTBLK; 380 goto error_2; 381 } 382 #ifdef __FreeBSD__ 383 if (bdevsw(devvp->v_rdev) == NULL) { 384 #else 385 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 386 #endif 387 err = ENXIO; 388 goto error_2; 389 } 390 if (mp->mnt_flag & MNT_UPDATE) { 391 #if 0 392 /* 393 ******************** 394 * UPDATE 395 ******************** 396 */ 397 398 if (devvp != ntmp->um_devvp) 399 err = EINVAL; /* needs translation */ 400 else 401 vrele(devvp); 402 /* 403 * Update device name only on success 404 */ 405 if( !err) { 406 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 407 UIO_USERSPACE, mp, p); 408 } 409 #endif 410 } else { 411 /* 412 ******************** 413 * NEW MOUNT 414 ******************** 415 */ 416 417 /* 418 * Since this is a new mount, we want the names for 419 * the device and the mount point copied in. If an 420 * error occurs, the mountpoint is discarded by the 421 * upper level code. 422 */ 423 /* Save "last mounted on" info for mount point (NULL pad)*/ 424 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 425 UIO_USERSPACE, mp, l); 426 if ( !err) { 427 err = ntfs_mountfs(devvp, mp, &args, l); 428 } 429 } 430 if (err) { 431 goto error_2; 432 } 433 434 #ifdef __FreeBSD__ 435 dostatvfs: 436 #endif 437 /* 438 * Initialize FS stat information in mount struct; uses both 439 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 440 * 441 * This code is common to root and non-root mounts 442 */ 443 (void)VFS_STATVFS(mp, &mp->mnt_stat, l); 444 445 goto success; 446 447 448 error_2: /* error with devvp held*/ 449 450 /* release devvp before failing*/ 451 vrele(devvp); 452 453 error_1: /* no state to back out*/ 454 455 success: 456 return(err); 457 } 458 459 /* 460 * Common code for mount and mountroot 461 */ 462 int 463 ntfs_mountfs(devvp, mp, argsp, l) 464 struct vnode *devvp; 465 struct mount *mp; 466 struct ntfs_args *argsp; 467 struct lwp *l; 468 { 469 struct buf *bp; 470 struct ntfsmount *ntmp; 471 dev_t dev = devvp->v_rdev; 472 int error, ronly, ncount, i; 473 struct vnode *vp; 474 475 /* 476 * Disallow multiple mounts of the same device. 477 * Disallow mounting of a device that is currently in use 478 * (except for root, which might share swap device for miniroot). 479 * Flush out any old buffers remaining from a previous use. 480 */ 481 error = vfs_mountedon(devvp); 482 if (error) 483 return (error); 484 ncount = vcount(devvp); 485 if (ncount > 1 && devvp != rootvp) 486 return (EBUSY); 487 error = vinvalbuf(devvp, V_SAVE, l->l_proc->p_ucred, l, 0, 0); 488 if (error) 489 return (error); 490 491 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 492 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, l); 493 if (error) 494 return (error); 495 496 bp = NULL; 497 498 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 499 if (error) 500 goto out; 501 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 502 bzero( ntmp, sizeof *ntmp ); 503 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 504 brelse( bp ); 505 bp = NULL; 506 507 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 508 error = EINVAL; 509 dprintf(("ntfs_mountfs: invalid boot block\n")); 510 goto out; 511 } 512 513 { 514 int8_t cpr = ntmp->ntm_mftrecsz; 515 if( cpr > 0 ) 516 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 517 else 518 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 519 } 520 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 521 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 522 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 523 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 524 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 525 526 ntmp->ntm_mountp = mp; 527 ntmp->ntm_dev = dev; 528 ntmp->ntm_devvp = devvp; 529 ntmp->ntm_uid = argsp->uid; 530 ntmp->ntm_gid = argsp->gid; 531 ntmp->ntm_mode = argsp->mode; 532 ntmp->ntm_flag = argsp->flag; 533 mp->mnt_data = ntmp; 534 535 /* set file name encode/decode hooks XXX utf-8 only for now */ 536 ntmp->ntm_wget = ntfs_utf8_wget; 537 ntmp->ntm_wput = ntfs_utf8_wput; 538 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 539 540 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 541 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 542 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 543 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 544 545 /* 546 * We read in some system nodes to do not allow 547 * reclaim them and to have everytime access to them. 548 */ 549 { 550 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 551 for (i=0; i<3; i++) { 552 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 553 if(error) 554 goto out1; 555 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 556 VREF(ntmp->ntm_sysvn[pi[i]]); 557 vput(ntmp->ntm_sysvn[pi[i]]); 558 } 559 } 560 561 /* read the Unicode lowercase --> uppercase translation table, 562 * if necessary */ 563 if ((error = ntfs_toupper_use(mp, ntmp))) 564 goto out1; 565 566 /* 567 * Scan $BitMap and count free clusters 568 */ 569 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 570 if(error) 571 goto out1; 572 573 /* 574 * Read and translate to internal format attribute 575 * definition file. 576 */ 577 { 578 int num,j; 579 struct attrdef ad; 580 581 /* Open $AttrDef */ 582 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp); 583 if(error) 584 goto out1; 585 586 /* Count valid entries */ 587 for(num=0;;num++) { 588 error = ntfs_readattr(ntmp, VTONT(vp), 589 NTFS_A_DATA, NULL, 590 num * sizeof(ad), sizeof(ad), 591 &ad, NULL); 592 if (error) 593 goto out1; 594 if (ad.ad_name[0] == 0) 595 break; 596 } 597 598 /* Alloc memory for attribute definitions */ 599 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 600 num * sizeof(struct ntvattrdef), 601 M_NTFSMNT, M_WAITOK); 602 603 ntmp->ntm_adnum = num; 604 605 /* Read them and translate */ 606 for(i=0;i<num;i++){ 607 error = ntfs_readattr(ntmp, VTONT(vp), 608 NTFS_A_DATA, NULL, 609 i * sizeof(ad), sizeof(ad), 610 &ad, NULL); 611 if (error) 612 goto out1; 613 j = 0; 614 do { 615 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 616 } while(ad.ad_name[j++]); 617 ntmp->ntm_ad[i].ad_namelen = j - 1; 618 ntmp->ntm_ad[i].ad_type = ad.ad_type; 619 } 620 621 vput(vp); 622 } 623 624 #if defined(__FreeBSD__) 625 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 626 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 627 #else 628 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 629 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 630 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 631 #endif 632 mp->mnt_flag |= MNT_LOCAL; 633 devvp->v_specmountpoint = mp; 634 return (0); 635 636 out1: 637 for(i=0;i<NTFS_SYSNODESNUM;i++) 638 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 639 640 if (vflush(mp,NULLVP,0)) 641 dprintf(("ntfs_mountfs: vflush failed\n")); 642 643 out: 644 devvp->v_specmountpoint = NULL; 645 if (bp) 646 brelse(bp); 647 648 /* lock the device vnode before calling VOP_CLOSE() */ 649 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 650 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, l); 651 VOP_UNLOCK(devvp, 0); 652 653 return (error); 654 } 655 656 static int 657 ntfs_start ( 658 struct mount *mp, 659 int flags, 660 struct lwp *l ) 661 { 662 return (0); 663 } 664 665 static int 666 ntfs_unmount( 667 struct mount *mp, 668 int mntflags, 669 struct lwp *l) 670 { 671 struct ntfsmount *ntmp; 672 int error, ronly = 0, flags, i; 673 674 dprintf(("ntfs_unmount: unmounting...\n")); 675 ntmp = VFSTONTFS(mp); 676 677 flags = 0; 678 if(mntflags & MNT_FORCE) 679 flags |= FORCECLOSE; 680 681 dprintf(("ntfs_unmount: vflushing...\n")); 682 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 683 if (error) { 684 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 685 return (error); 686 } 687 688 /* Check if only system vnodes are rest */ 689 for(i=0;i<NTFS_SYSNODESNUM;i++) 690 if((ntmp->ntm_sysvn[i]) && 691 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 692 693 /* Dereference all system vnodes */ 694 for(i=0;i<NTFS_SYSNODESNUM;i++) 695 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 696 697 /* vflush system vnodes */ 698 error = vflush(mp,NULLVP,flags); 699 if (error) { 700 /* XXX should this be panic() ? */ 701 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 702 } 703 704 /* Check if the type of device node isn't VBAD before 705 * touching v_specinfo. If the device vnode is revoked, the 706 * field is NULL and touching it causes null pointer derefercence. 707 */ 708 if (ntmp->ntm_devvp->v_type != VBAD) 709 ntmp->ntm_devvp->v_specmountpoint = NULL; 710 711 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 712 713 /* lock the device vnode before calling VOP_CLOSE() */ 714 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 715 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 716 NOCRED, l); 717 VOP_UNLOCK(ntmp->ntm_devvp, 0); 718 719 vrele(ntmp->ntm_devvp); 720 721 /* free the toupper table, if this has been last mounted ntfs volume */ 722 ntfs_toupper_unuse(); 723 724 dprintf(("ntfs_umount: freeing memory...\n")); 725 mp->mnt_data = NULL; 726 mp->mnt_flag &= ~MNT_LOCAL; 727 free(ntmp->ntm_ad, M_NTFSMNT); 728 FREE(ntmp, M_NTFSMNT); 729 return (error); 730 } 731 732 static int 733 ntfs_root( 734 struct mount *mp, 735 struct vnode **vpp) 736 { 737 struct vnode *nvp; 738 int error = 0; 739 740 dprintf(("ntfs_root(): sysvn: %p\n", 741 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 742 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 743 if(error) { 744 printf("ntfs_root: VFS_VGET failed: %d\n",error); 745 return (error); 746 } 747 748 *vpp = nvp; 749 return (0); 750 } 751 752 /* 753 * Do operations associated with quotas, not supported 754 */ 755 /* ARGSUSED */ 756 static int 757 ntfs_quotactl ( 758 struct mount *mp, 759 int cmds, 760 uid_t uid, 761 void *arg, 762 struct lwp *l) 763 { 764 765 return EOPNOTSUPP; 766 } 767 768 int 769 ntfs_calccfree( 770 struct ntfsmount *ntmp, 771 cn_t *cfreep) 772 { 773 struct vnode *vp; 774 u_int8_t *tmp; 775 int j, error; 776 cn_t cfree = 0; 777 size_t bmsize, i; 778 779 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 780 781 bmsize = VTOF(vp)->f_size; 782 783 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 784 785 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 786 0, bmsize, tmp, NULL); 787 if (error) 788 goto out; 789 790 for(i=0;i<bmsize;i++) 791 for(j=0;j<8;j++) 792 if(~tmp[i] & (1 << j)) cfree++; 793 *cfreep = cfree; 794 795 out: 796 free(tmp, M_TEMP); 797 return(error); 798 } 799 800 static int 801 ntfs_statvfs( 802 struct mount *mp, 803 struct statvfs *sbp, 804 struct lwp *l) 805 { 806 struct ntfsmount *ntmp = VFSTONTFS(mp); 807 u_int64_t mftallocated; 808 809 dprintf(("ntfs_statvfs():\n")); 810 811 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 812 813 #if defined(__FreeBSD__) 814 sbp->f_type = mp->mnt_vfc->vfc_typenum; 815 #endif 816 sbp->f_bsize = ntmp->ntm_bps; 817 sbp->f_frsize = sbp->f_bsize; /* XXX */ 818 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 819 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 820 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 821 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 822 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 823 sbp->f_ffree; 824 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 825 sbp->f_flag = mp->mnt_flag; 826 copy_statvfs_info(sbp, mp); 827 return (0); 828 } 829 830 static int 831 ntfs_sync ( 832 struct mount *mp, 833 int waitfor, 834 struct ucred *cred, 835 struct lwp *l) 836 { 837 /*dprintf(("ntfs_sync():\n"));*/ 838 return (0); 839 } 840 841 /*ARGSUSED*/ 842 static int 843 ntfs_fhtovp( 844 #if defined(__FreeBSD__) 845 struct mount *mp, 846 struct fid *fhp, 847 struct sockaddr *nam, 848 struct vnode **vpp, 849 int *exflagsp, 850 struct ucred **credanonp) 851 #elif defined(__NetBSD__) 852 struct mount *mp, 853 struct fid *fhp, 854 struct vnode **vpp) 855 #else 856 struct mount *mp, 857 struct fid *fhp, 858 struct mbuf *nam, 859 struct vnode **vpp, 860 int *exflagsp, 861 struct ucred **credanonp) 862 #endif 863 { 864 struct ntfid *ntfhp = (struct ntfid *)fhp; 865 int error; 866 867 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 868 ntfhp->ntfid_ino)); 869 870 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 871 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 872 if (error != 0) { 873 *vpp = NULLVP; 874 return (error); 875 } 876 877 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 878 * with NTFS, we don't need to check anything else for now */ 879 return (0); 880 } 881 882 static int 883 ntfs_vptofh( 884 struct vnode *vp, 885 struct fid *fhp) 886 { 887 struct ntnode *ntp; 888 struct ntfid *ntfhp; 889 struct fnode *fn; 890 891 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 892 vp)); 893 894 fn = VTOF(vp); 895 ntp = VTONT(vp); 896 ntfhp = (struct ntfid *)fhp; 897 ntfhp->ntfid_len = sizeof(struct ntfid); 898 ntfhp->ntfid_ino = ntp->i_number; 899 ntfhp->ntfid_attr = fn->f_attrtype; 900 #ifdef notyet 901 ntfhp->ntfid_gen = ntp->i_gen; 902 #endif 903 return (0); 904 } 905 906 int 907 ntfs_vgetex( 908 struct mount *mp, 909 ino_t ino, 910 u_int32_t attrtype, 911 char *attrname, 912 u_long lkflags, 913 u_long flags, 914 struct vnode **vpp) 915 { 916 int error; 917 struct ntfsmount *ntmp; 918 struct ntnode *ip; 919 struct fnode *fp; 920 struct vnode *vp; 921 enum vtype f_type = VBAD; 922 923 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 924 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 925 (u_long)flags )); 926 927 ntmp = VFSTONTFS(mp); 928 *vpp = NULL; 929 930 /* Get ntnode */ 931 error = ntfs_ntlookup(ntmp, ino, &ip); 932 if (error) { 933 printf("ntfs_vget: ntfs_ntget failed\n"); 934 return (error); 935 } 936 937 /* It may be not initialized fully, so force load it */ 938 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 939 error = ntfs_loadntnode(ntmp, ip); 940 if(error) { 941 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 942 ip->i_number); 943 ntfs_ntput(ip); 944 return (error); 945 } 946 } 947 948 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 949 if (error) { 950 printf("ntfs_vget: ntfs_fget failed\n"); 951 ntfs_ntput(ip); 952 return (error); 953 } 954 955 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 956 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 957 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 958 f_type = VDIR; 959 } else if (flags & VG_EXT) { 960 f_type = VNON; 961 fp->f_size = fp->f_allocated = 0; 962 } else { 963 f_type = VREG; 964 965 error = ntfs_filesize(ntmp, fp, 966 &fp->f_size, &fp->f_allocated); 967 if (error) { 968 ntfs_ntput(ip); 969 return (error); 970 } 971 } 972 973 fp->f_flag |= FN_VALID; 974 } 975 976 /* 977 * We may be calling vget() now. To avoid potential deadlock, we need 978 * to release ntnode lock, since due to locking order vnode 979 * lock has to be acquired first. 980 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 981 * prematurely. 982 */ 983 ntfs_ntput(ip); 984 985 if (FTOV(fp)) { 986 /* vget() returns error if the vnode has been recycled */ 987 if (vget(FTOV(fp), lkflags) == 0) { 988 *vpp = FTOV(fp); 989 return (0); 990 } 991 } 992 993 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 994 if(error) { 995 ntfs_frele(fp); 996 ntfs_ntput(ip); 997 return (error); 998 } 999 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 1000 1001 #ifdef __FreeBSD__ 1002 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 1003 #endif 1004 fp->f_vp = vp; 1005 vp->v_data = fp; 1006 if (f_type != VBAD) 1007 vp->v_type = f_type; 1008 1009 if (ino == NTFS_ROOTINO) 1010 vp->v_flag |= VROOT; 1011 1012 if (lkflags & LK_TYPE_MASK) { 1013 error = vn_lock(vp, lkflags); 1014 if (error) { 1015 vput(vp); 1016 return (error); 1017 } 1018 } 1019 1020 genfs_node_init(vp, &ntfs_genfsops); 1021 VREF(ip->i_devvp); 1022 *vpp = vp; 1023 return (0); 1024 } 1025 1026 static int 1027 ntfs_vget( 1028 struct mount *mp, 1029 ino_t ino, 1030 struct vnode **vpp) 1031 { 1032 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 1033 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 1034 } 1035 1036 #if defined(__FreeBSD__) 1037 static struct vfsops ntfs_vfsops = { 1038 ntfs_mount, 1039 ntfs_start, 1040 ntfs_unmount, 1041 ntfs_root, 1042 ntfs_quotactl, 1043 ntfs_statvfs, 1044 ntfs_sync, 1045 ntfs_vget, 1046 ntfs_fhtovp, 1047 ntfs_vptofh, 1048 ntfs_init, 1049 NULL 1050 }; 1051 VFS_SET(ntfs_vfsops, ntfs, 0); 1052 #elif defined(__NetBSD__) 1053 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1054 1055 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1056 &ntfs_vnodeop_opv_desc, 1057 NULL, 1058 }; 1059 1060 struct vfsops ntfs_vfsops = { 1061 MOUNT_NTFS, 1062 ntfs_mount, 1063 ntfs_start, 1064 ntfs_unmount, 1065 ntfs_root, 1066 ntfs_quotactl, 1067 ntfs_statvfs, 1068 ntfs_sync, 1069 ntfs_vget, 1070 ntfs_fhtovp, 1071 ntfs_vptofh, 1072 ntfs_init, 1073 ntfs_reinit, 1074 ntfs_done, 1075 NULL, 1076 ntfs_mountroot, 1077 ntfs_checkexp, 1078 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1079 ntfs_vnodeopv_descs, 1080 }; 1081 #endif 1082
Indexes created Wed Oct 01 19:09:53 GMT 2025