ntfs_vfsops.c revision 1.17.2.1
1 /* $NetBSD: ntfs_vfsops.c,v 1.17.2.1 2004/05/29 09:05:10 tron 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 1.17.2.1 2004/05/29 09:05:10 tron 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 proc *)); 75 #endif 76 static int ntfs_quotactl __P((struct mount *, int, uid_t, caddr_t, 77 struct proc *)); 78 static int ntfs_root __P((struct mount *, struct vnode **)); 79 static int ntfs_start __P((struct mount *, int, struct proc *)); 80 static int ntfs_statfs __P((struct mount *, struct statfs *, 81 struct proc *)); 82 static int ntfs_sync __P((struct mount *, int, struct ucred *, 83 struct proc *)); 84 static int ntfs_unmount __P((struct mount *, int, struct proc *)); 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 proc *)); 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 proc *p = curproc; /* 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, p)) != 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_statfs(mp, &mp->mnt_stat, p); 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 struct proc *p ) 275 { 276 int err = 0; 277 struct vnode *devvp; 278 struct ntfs_args args; 279 280 #ifdef __FreeBSD__ 281 /* 282 * Use NULL path to flag a root mount 283 */ 284 if( path == NULL) { 285 /* 286 *** 287 * Mounting root file system 288 *** 289 */ 290 291 /* Get vnode for root device*/ 292 if( bdevvp( rootdev, &rootvp)) 293 panic("ffs_mountroot: can't setup bdevvp for root"); 294 295 /* 296 * FS specific handling 297 */ 298 mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/ 299 300 /* 301 * Attempt mount 302 */ 303 if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 304 /* fs specific cleanup (if any)*/ 305 goto error_1; 306 } 307 308 goto dostatfs; /* success*/ 309 310 } 311 #endif /* FreeBSD */ 312 313 if (mp->mnt_flag & MNT_GETARGS) { 314 struct ntfsmount *ntmp = VFSTONTFS(mp); 315 if (ntmp == NULL) 316 return EIO; 317 args.fspec = NULL; 318 args.uid = ntmp->ntm_uid; 319 args.gid = ntmp->ntm_gid; 320 args.mode = ntmp->ntm_mode; 321 args.flag = ntmp->ntm_flag; 322 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 323 return copyout(&args, data, sizeof(args)); 324 } 325 /* 326 *** 327 * Mounting non-root file system or updating a file system 328 *** 329 */ 330 331 /* copy in user arguments*/ 332 err = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args)); 333 if (err) 334 goto error_1; /* can't get arguments*/ 335 336 /* 337 * If updating, check whether changing from read-only to 338 * read/write; if there is no device name, that's all we do. 339 */ 340 if (mp->mnt_flag & MNT_UPDATE) { 341 /* if not updating name...*/ 342 if (args.fspec == 0) { 343 /* 344 * Process export requests. Jumping to "success" 345 * will return the vfs_export() error code. 346 */ 347 struct ntfsmount *ntm = VFSTONTFS(mp); 348 err = vfs_export(mp, &ntm->ntm_export, &args.export); 349 goto success; 350 } 351 352 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 353 err = EINVAL; 354 goto error_1; 355 } 356 357 /* 358 * Not an update, or updating the name: look up the name 359 * and verify that it refers to a sensible block device. 360 */ 361 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 362 err = namei(ndp); 363 if (err) { 364 /* can't get devvp!*/ 365 goto error_1; 366 } 367 368 devvp = ndp->ni_vp; 369 370 if (devvp->v_type != VBLK) { 371 err = ENOTBLK; 372 goto error_2; 373 } 374 #ifdef __FreeBSD__ 375 if (bdevsw(devvp->v_rdev) == NULL) { 376 #else 377 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 378 #endif 379 err = ENXIO; 380 goto error_2; 381 } 382 if (mp->mnt_flag & MNT_UPDATE) { 383 #if 0 384 /* 385 ******************** 386 * UPDATE 387 ******************** 388 */ 389 390 if (devvp != ntmp->um_devvp) 391 err = EINVAL; /* needs translation */ 392 else 393 vrele(devvp); 394 /* 395 * Update device name only on success 396 */ 397 if( !err) { 398 err = set_statfs_info(NULL, UIO_USERSPACE, args.fspec, 399 UIO_USERSPACE, mp, p); 400 } 401 #endif 402 } else { 403 /* 404 ******************** 405 * NEW MOUNT 406 ******************** 407 */ 408 409 /* 410 * Since this is a new mount, we want the names for 411 * the device and the mount point copied in. If an 412 * error occurs, the mountpoint is discarded by the 413 * upper level code. 414 */ 415 /* Save "last mounted on" info for mount point (NULL pad)*/ 416 err = set_statfs_info(path, UIO_USERSPACE, args.fspec, 417 UIO_USERSPACE, mp, p); 418 if ( !err) { 419 err = ntfs_mountfs(devvp, mp, &args, p); 420 } 421 } 422 if (err) { 423 goto error_2; 424 } 425 426 #ifdef __FreeBSD__ 427 dostatfs: 428 #endif 429 /* 430 * Initialize FS stat information in mount struct; uses both 431 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 432 * 433 * This code is common to root and non-root mounts 434 */ 435 (void)VFS_STATFS(mp, &mp->mnt_stat, p); 436 437 goto success; 438 439 440 error_2: /* error with devvp held*/ 441 442 /* release devvp before failing*/ 443 vrele(devvp); 444 445 error_1: /* no state to back out*/ 446 447 success: 448 return(err); 449 } 450 451 /* 452 * Common code for mount and mountroot 453 */ 454 int 455 ntfs_mountfs(devvp, mp, argsp, p) 456 struct vnode *devvp; 457 struct mount *mp; 458 struct ntfs_args *argsp; 459 struct proc *p; 460 { 461 struct buf *bp; 462 struct ntfsmount *ntmp; 463 dev_t dev = devvp->v_rdev; 464 int error, ronly, ncount, i; 465 struct vnode *vp; 466 467 /* 468 * Disallow multiple mounts of the same device. 469 * Disallow mounting of a device that is currently in use 470 * (except for root, which might share swap device for miniroot). 471 * Flush out any old buffers remaining from a previous use. 472 */ 473 error = vfs_mountedon(devvp); 474 if (error) 475 return (error); 476 ncount = vcount(devvp); 477 if (ncount > 1 && devvp != rootvp) 478 return (EBUSY); 479 error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); 480 if (error) 481 return (error); 482 483 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 484 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p); 485 if (error) 486 return (error); 487 488 bp = NULL; 489 490 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 491 if (error) 492 goto out; 493 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 494 bzero( ntmp, sizeof *ntmp ); 495 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 496 brelse( bp ); 497 bp = NULL; 498 499 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 500 error = EINVAL; 501 dprintf(("ntfs_mountfs: invalid boot block\n")); 502 goto out; 503 } 504 505 { 506 int8_t cpr = ntmp->ntm_mftrecsz; 507 if( cpr > 0 ) 508 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 509 else 510 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 511 } 512 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 513 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 514 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 515 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 516 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 517 518 ntmp->ntm_mountp = mp; 519 ntmp->ntm_dev = dev; 520 ntmp->ntm_devvp = devvp; 521 ntmp->ntm_uid = argsp->uid; 522 ntmp->ntm_gid = argsp->gid; 523 ntmp->ntm_mode = argsp->mode; 524 ntmp->ntm_flag = argsp->flag; 525 mp->mnt_data = ntmp; 526 527 /* set file name encode/decode hooks XXX utf-8 only for now */ 528 ntmp->ntm_wget = ntfs_utf8_wget; 529 ntmp->ntm_wput = ntfs_utf8_wput; 530 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 531 532 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 533 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 534 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 535 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 536 537 /* 538 * We read in some system nodes to do not allow 539 * reclaim them and to have everytime access to them. 540 */ 541 { 542 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 543 for (i=0; i<3; i++) { 544 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 545 if(error) 546 goto out1; 547 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 548 VREF(ntmp->ntm_sysvn[pi[i]]); 549 vput(ntmp->ntm_sysvn[pi[i]]); 550 } 551 } 552 553 /* read the Unicode lowercase --> uppercase translation table, 554 * if necessary */ 555 if ((error = ntfs_toupper_use(mp, ntmp))) 556 goto out1; 557 558 /* 559 * Scan $BitMap and count free clusters 560 */ 561 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 562 if(error) 563 goto out1; 564 565 /* 566 * Read and translate to internal format attribute 567 * definition file. 568 */ 569 { 570 int num,j; 571 struct attrdef ad; 572 573 /* Open $AttrDef */ 574 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 575 if(error) 576 goto out1; 577 578 /* Count valid entries */ 579 for(num=0;;num++) { 580 error = ntfs_readattr(ntmp, VTONT(vp), 581 NTFS_A_DATA, NULL, 582 num * sizeof(ad), sizeof(ad), 583 &ad, NULL); 584 if (error) 585 goto out1; 586 if (ad.ad_name[0] == 0) 587 break; 588 } 589 590 /* Alloc memory for attribute definitions */ 591 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 592 num * sizeof(struct ntvattrdef), 593 M_NTFSMNT, M_WAITOK); 594 595 ntmp->ntm_adnum = num; 596 597 /* Read them and translate */ 598 for(i=0;i<num;i++){ 599 error = ntfs_readattr(ntmp, VTONT(vp), 600 NTFS_A_DATA, NULL, 601 i * sizeof(ad), sizeof(ad), 602 &ad, NULL); 603 if (error) 604 goto out1; 605 j = 0; 606 do { 607 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 608 } while(ad.ad_name[j++]); 609 ntmp->ntm_ad[i].ad_namelen = j - 1; 610 ntmp->ntm_ad[i].ad_type = ad.ad_type; 611 } 612 613 vput(vp); 614 } 615 616 #if defined(__FreeBSD__) 617 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 618 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 619 #else 620 mp->mnt_stat.f_fsid.val[0] = dev; 621 mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_NTFS); 622 #endif 623 mp->mnt_maxsymlinklen = 0; 624 mp->mnt_flag |= MNT_LOCAL; 625 devvp->v_specmountpoint = mp; 626 return (0); 627 628 out1: 629 for(i=0;i<NTFS_SYSNODESNUM;i++) 630 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 631 632 if (vflush(mp,NULLVP,0)) 633 dprintf(("ntfs_mountfs: vflush failed\n")); 634 635 out: 636 devvp->v_specmountpoint = NULL; 637 if (bp) 638 brelse(bp); 639 640 /* lock the device vnode before calling VOP_CLOSE() */ 641 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 642 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); 643 VOP_UNLOCK(devvp, 0); 644 645 return (error); 646 } 647 648 static int 649 ntfs_start ( 650 struct mount *mp, 651 int flags, 652 struct proc *p ) 653 { 654 return (0); 655 } 656 657 static int 658 ntfs_unmount( 659 struct mount *mp, 660 int mntflags, 661 struct proc *p) 662 { 663 struct ntfsmount *ntmp; 664 int error, ronly = 0, flags, i; 665 666 dprintf(("ntfs_unmount: unmounting...\n")); 667 ntmp = VFSTONTFS(mp); 668 669 flags = 0; 670 if(mntflags & MNT_FORCE) 671 flags |= FORCECLOSE; 672 673 dprintf(("ntfs_unmount: vflushing...\n")); 674 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 675 if (error) { 676 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 677 return (error); 678 } 679 680 /* Check if only system vnodes are rest */ 681 for(i=0;i<NTFS_SYSNODESNUM;i++) 682 if((ntmp->ntm_sysvn[i]) && 683 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 684 685 /* Dereference all system vnodes */ 686 for(i=0;i<NTFS_SYSNODESNUM;i++) 687 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 688 689 /* vflush system vnodes */ 690 error = vflush(mp,NULLVP,flags); 691 if (error) { 692 /* XXX should this be panic() ? */ 693 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 694 } 695 696 /* Check if the type of device node isn't VBAD before 697 * touching v_specinfo. If the device vnode is revoked, the 698 * field is NULL and touching it causes null pointer derefercence. 699 */ 700 if (ntmp->ntm_devvp->v_type != VBAD) 701 ntmp->ntm_devvp->v_specmountpoint = NULL; 702 703 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0); 704 705 /* lock the device vnode before calling VOP_CLOSE() */ 706 VOP_LOCK(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 707 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 708 NOCRED, p); 709 VOP_UNLOCK(ntmp->ntm_devvp, 0); 710 711 vrele(ntmp->ntm_devvp); 712 713 /* free the toupper table, if this has been last mounted ntfs volume */ 714 ntfs_toupper_unuse(); 715 716 dprintf(("ntfs_umount: freeing memory...\n")); 717 mp->mnt_data = NULL; 718 mp->mnt_flag &= ~MNT_LOCAL; 719 free(ntmp->ntm_ad, M_NTFSMNT); 720 FREE(ntmp, M_NTFSMNT); 721 return (error); 722 } 723 724 static int 725 ntfs_root( 726 struct mount *mp, 727 struct vnode **vpp ) 728 { 729 struct vnode *nvp; 730 int error = 0; 731 732 dprintf(("ntfs_root(): sysvn: %p\n", 733 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 734 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 735 if(error) { 736 printf("ntfs_root: VFS_VGET failed: %d\n",error); 737 return (error); 738 } 739 740 *vpp = nvp; 741 return (0); 742 } 743 744 /* 745 * Do operations associated with quotas, not supported 746 */ 747 /* ARGSUSED */ 748 static int 749 ntfs_quotactl ( 750 struct mount *mp, 751 int cmds, 752 uid_t uid, 753 caddr_t arg, 754 struct proc *p) 755 { 756 757 return EOPNOTSUPP; 758 } 759 760 int 761 ntfs_calccfree( 762 struct ntfsmount *ntmp, 763 cn_t *cfreep) 764 { 765 struct vnode *vp; 766 u_int8_t *tmp; 767 int j, error; 768 cn_t cfree = 0; 769 size_t bmsize, i; 770 771 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 772 773 bmsize = VTOF(vp)->f_size; 774 775 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 776 777 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 778 0, bmsize, tmp, NULL); 779 if (error) 780 goto out; 781 782 for(i=0;i<bmsize;i++) 783 for(j=0;j<8;j++) 784 if(~tmp[i] & (1 << j)) cfree++; 785 *cfreep = cfree; 786 787 out: 788 free(tmp, M_TEMP); 789 return(error); 790 } 791 792 static int 793 ntfs_statfs( 794 struct mount *mp, 795 struct statfs *sbp, 796 struct proc *p) 797 { 798 struct ntfsmount *ntmp = VFSTONTFS(mp); 799 u_int64_t mftallocated; 800 801 dprintf(("ntfs_statfs():\n")); 802 803 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 804 805 #if defined(__FreeBSD__) 806 sbp->f_type = mp->mnt_vfc->vfc_typenum; 807 #elif defined(__NetBSD__) 808 sbp->f_type = 0; 809 #else 810 sbp->f_type = MOUNT_NTFS; 811 #endif 812 sbp->f_bsize = ntmp->ntm_bps; 813 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 814 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 815 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 816 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec; 817 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 818 sbp->f_ffree; 819 sbp->f_flags = mp->mnt_flag; 820 copy_statfs_info(sbp, mp); 821 return (0); 822 } 823 824 static int 825 ntfs_sync ( 826 struct mount *mp, 827 int waitfor, 828 struct ucred *cred, 829 struct proc *p) 830 { 831 /*dprintf(("ntfs_sync():\n"));*/ 832 return (0); 833 } 834 835 /*ARGSUSED*/ 836 static int 837 ntfs_fhtovp( 838 #if defined(__FreeBSD__) 839 struct mount *mp, 840 struct fid *fhp, 841 struct sockaddr *nam, 842 struct vnode **vpp, 843 int *exflagsp, 844 struct ucred **credanonp) 845 #elif defined(__NetBSD__) 846 struct mount *mp, 847 struct fid *fhp, 848 struct vnode **vpp) 849 #else 850 struct mount *mp, 851 struct fid *fhp, 852 struct mbuf *nam, 853 struct vnode **vpp, 854 int *exflagsp, 855 struct ucred **credanonp) 856 #endif 857 { 858 struct ntfid *ntfhp = (struct ntfid *)fhp; 859 int error; 860 861 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 862 ntfhp->ntfid_ino)); 863 864 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 865 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 866 if (error != 0) { 867 *vpp = NULLVP; 868 return (error); 869 } 870 871 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 872 * with NTFS, we don't need to check anything else for now */ 873 return (0); 874 } 875 876 static int 877 ntfs_vptofh( 878 struct vnode *vp, 879 struct fid *fhp) 880 { 881 struct ntnode *ntp; 882 struct ntfid *ntfhp; 883 struct fnode *fn; 884 885 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 886 vp)); 887 888 fn = VTOF(vp); 889 ntp = VTONT(vp); 890 ntfhp = (struct ntfid *)fhp; 891 ntfhp->ntfid_len = sizeof(struct ntfid); 892 ntfhp->ntfid_ino = ntp->i_number; 893 ntfhp->ntfid_attr = fn->f_attrtype; 894 #ifdef notyet 895 ntfhp->ntfid_gen = ntp->i_gen; 896 #endif 897 return (0); 898 } 899 900 int 901 ntfs_vgetex( 902 struct mount *mp, 903 ino_t ino, 904 u_int32_t attrtype, 905 char *attrname, 906 u_long lkflags, 907 u_long flags, 908 struct proc *p, 909 struct vnode **vpp) 910 { 911 int error; 912 struct ntfsmount *ntmp; 913 struct ntnode *ip; 914 struct fnode *fp; 915 struct vnode *vp; 916 enum vtype f_type = VBAD; 917 918 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 919 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 920 (u_long)flags )); 921 922 ntmp = VFSTONTFS(mp); 923 *vpp = NULL; 924 925 /* Get ntnode */ 926 error = ntfs_ntlookup(ntmp, ino, &ip); 927 if (error) { 928 printf("ntfs_vget: ntfs_ntget failed\n"); 929 return (error); 930 } 931 932 /* It may be not initialized fully, so force load it */ 933 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 934 error = ntfs_loadntnode(ntmp, ip); 935 if(error) { 936 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 937 ip->i_number); 938 ntfs_ntput(ip); 939 return (error); 940 } 941 } 942 943 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 944 if (error) { 945 printf("ntfs_vget: ntfs_fget failed\n"); 946 ntfs_ntput(ip); 947 return (error); 948 } 949 950 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 951 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 952 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 953 f_type = VDIR; 954 } else if (flags & VG_EXT) { 955 f_type = VNON; 956 fp->f_size = fp->f_allocated = 0; 957 } else { 958 f_type = VREG; 959 960 error = ntfs_filesize(ntmp, fp, 961 &fp->f_size, &fp->f_allocated); 962 if (error) { 963 ntfs_ntput(ip); 964 return (error); 965 } 966 } 967 968 fp->f_flag |= FN_VALID; 969 } 970 971 /* 972 * We may be calling vget() now. To avoid potential deadlock, we need 973 * to release ntnode lock, since due to locking order vnode 974 * lock has to be acquired first. 975 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 976 * prematurely. 977 */ 978 ntfs_ntput(ip); 979 980 if (FTOV(fp)) { 981 /* vget() returns error if the vnode has been recycled */ 982 if (vget(FTOV(fp), lkflags) == 0) { 983 *vpp = FTOV(fp); 984 return (0); 985 } 986 } 987 988 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 989 if(error) { 990 ntfs_frele(fp); 991 ntfs_ntput(ip); 992 return (error); 993 } 994 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 995 996 #ifdef __FreeBSD__ 997 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 998 #endif 999 fp->f_vp = vp; 1000 vp->v_data = fp; 1001 if (f_type != VBAD) 1002 vp->v_type = f_type; 1003 1004 if (ino == NTFS_ROOTINO) 1005 vp->v_flag |= VROOT; 1006 1007 if (lkflags & LK_TYPE_MASK) { 1008 error = vn_lock(vp, lkflags); 1009 if (error) { 1010 vput(vp); 1011 return (error); 1012 } 1013 } 1014 1015 genfs_node_init(vp, &ntfs_genfsops); 1016 VREF(ip->i_devvp); 1017 *vpp = vp; 1018 return (0); 1019 } 1020 1021 static int 1022 ntfs_vget( 1023 struct mount *mp, 1024 ino_t ino, 1025 struct vnode **vpp) 1026 { 1027 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 1028 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 1029 } 1030 1031 #if defined(__FreeBSD__) 1032 static struct vfsops ntfs_vfsops = { 1033 ntfs_mount, 1034 ntfs_start, 1035 ntfs_unmount, 1036 ntfs_root, 1037 ntfs_quotactl, 1038 ntfs_statfs, 1039 ntfs_sync, 1040 ntfs_vget, 1041 ntfs_fhtovp, 1042 ntfs_vptofh, 1043 ntfs_init, 1044 NULL 1045 }; 1046 VFS_SET(ntfs_vfsops, ntfs, 0); 1047 #elif defined(__NetBSD__) 1048 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1049 1050 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1051 &ntfs_vnodeop_opv_desc, 1052 NULL, 1053 }; 1054 1055 struct vfsops ntfs_vfsops = { 1056 MOUNT_NTFS, 1057 ntfs_mount, 1058 ntfs_start, 1059 ntfs_unmount, 1060 ntfs_root, 1061 ntfs_quotactl, 1062 ntfs_statfs, 1063 ntfs_sync, 1064 ntfs_vget, 1065 ntfs_fhtovp, 1066 ntfs_vptofh, 1067 ntfs_init, 1068 ntfs_reinit, 1069 ntfs_done, 1070 NULL, 1071 ntfs_mountroot, 1072 ntfs_checkexp, 1073 ntfs_vnodeopv_descs, 1074 }; 1075 #endif 1076
Indexes created Wed Oct 01 19:09:53 GMT 2025