ntfs_vfsops.c revision 1.33
1 /* $NetBSD: ntfs_vfsops.c,v 1.33 2005/08/30 19:01:30 xtraeme 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 1.33 2005/08/30 19:01:30 xtraeme 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(struct mount *, char *, caddr_t, 71 struct nameidata *, struct proc *); 72 #else 73 static int ntfs_mount(struct mount *, const char *, void *, 74 struct nameidata *, struct proc *); 75 #endif 76 static int ntfs_quotactl(struct mount *, int, uid_t, void *, 77 struct proc *); 78 static int ntfs_root(struct mount *, struct vnode **); 79 static int ntfs_start(struct mount *, int, struct proc *); 80 static int ntfs_statvfs(struct mount *, struct statvfs *, 81 struct proc *); 82 static int ntfs_sync(struct mount *, int, struct ucred *, 83 struct proc *); 84 static int ntfs_unmount(struct mount *, int, struct proc *); 85 static int ntfs_vget(struct mount *mp, ino_t ino, 86 struct vnode **vpp); 87 static int ntfs_mountfs(struct vnode *, struct mount *, 88 struct ntfs_args *, struct proc *); 89 static int ntfs_vptofh(struct vnode *, struct fid *); 90 91 #if defined(__FreeBSD__) 92 static int ntfs_init(struct vfsconf *); 93 static int ntfs_fhtovp(struct mount *, struct fid *, 94 struct sockaddr *, struct vnode **, 95 int *, struct ucred **); 96 #elif defined(__NetBSD__) 97 static void ntfs_init(void); 98 static void ntfs_reinit(void); 99 static void ntfs_done(void); 100 static int ntfs_fhtovp(struct mount *, struct fid *, 101 struct vnode **); 102 static int ntfs_checkexp(struct mount *, struct mbuf *, 103 int *, struct ucred **); 104 static int ntfs_mountroot(void); 105 #else 106 static int ntfs_init(void); 107 static int ntfs_fhtovp(struct mount *, struct fid *, 108 struct mbuf *, struct vnode **, 109 int *, struct ucred **); 110 #endif 111 112 static const struct genfs_ops ntfs_genfsops = { 113 .gop_write = genfs_compat_gop_write, 114 }; 115 116 #ifdef __NetBSD__ 117 /* 118 * Verify a remote client has export rights and return these rights via. 119 * exflagsp and credanonp. 120 */ 121 static int 122 ntfs_checkexp(mp, nam, exflagsp, credanonp) 123 struct mount *mp; 124 struct mbuf *nam; 125 int *exflagsp; 126 struct ucred **credanonp; 127 { 128 struct netcred *np; 129 struct ntfsmount *ntm = VFSTONTFS(mp); 130 131 /* 132 * Get the export permission structure for this <mp, client> tuple. 133 */ 134 np = vfs_export_lookup(mp, &ntm->ntm_export, nam); 135 if (np == NULL) 136 return (EACCES); 137 138 *exflagsp = np->netc_exflags; 139 *credanonp = &np->netc_anon; 140 return (0); 141 } 142 143 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 144 { 145 146 sysctl_createv(clog, 0, NULL, NULL, 147 CTLFLAG_PERMANENT, 148 CTLTYPE_NODE, "vfs", NULL, 149 NULL, 0, NULL, 0, 150 CTL_VFS, CTL_EOL); 151 sysctl_createv(clog, 0, NULL, NULL, 152 CTLFLAG_PERMANENT, 153 CTLTYPE_NODE, "ntfs", 154 SYSCTL_DESCR("NTFS file system"), 155 NULL, 0, NULL, 0, 156 CTL_VFS, 20, CTL_EOL); 157 /* 158 * XXX the "20" above could be dynamic, thereby eliminating 159 * one more instance of the "number to vfs" mapping problem, 160 * but "20" is the order as taken from sys/mount.h 161 */ 162 } 163 164 static int 165 ntfs_mountroot() 166 { 167 struct mount *mp; 168 struct proc *p = curproc; /* XXX */ 169 int error; 170 struct ntfs_args args; 171 172 if (root_device->dv_class != DV_DISK) 173 return (ENODEV); 174 175 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 176 vrele(rootvp); 177 return (error); 178 } 179 180 args.flag = 0; 181 args.uid = 0; 182 args.gid = 0; 183 args.mode = 0777; 184 185 if ((error = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 186 mp->mnt_op->vfs_refcount--; 187 vfs_unbusy(mp); 188 free(mp, M_MOUNT); 189 return (error); 190 } 191 192 simple_lock(&mountlist_slock); 193 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 194 simple_unlock(&mountlist_slock); 195 (void)ntfs_statvfs(mp, &mp->mnt_stat, p); 196 vfs_unbusy(mp); 197 return (0); 198 } 199 200 static void 201 ntfs_init() 202 { 203 #ifdef _LKM 204 malloc_type_attach(M_NTFSMNT); 205 malloc_type_attach(M_NTFSNTNODE); 206 malloc_type_attach(M_NTFSFNODE); 207 malloc_type_attach(M_NTFSDIR); 208 malloc_type_attach(M_NTFSNTHASH); 209 malloc_type_attach(M_NTFSNTVATTR); 210 malloc_type_attach(M_NTFSRDATA); 211 malloc_type_attach(M_NTFSDECOMP); 212 malloc_type_attach(M_NTFSRUN); 213 #endif 214 ntfs_nthashinit(); 215 ntfs_toupper_init(); 216 } 217 218 static void 219 ntfs_reinit() 220 { 221 ntfs_nthashreinit(); 222 } 223 224 static void 225 ntfs_done() 226 { 227 ntfs_nthashdone(); 228 #ifdef _LKM 229 malloc_type_detach(M_NTFSMNT); 230 malloc_type_detach(M_NTFSNTNODE); 231 malloc_type_detach(M_NTFSFNODE); 232 malloc_type_detach(M_NTFSDIR); 233 malloc_type_detach(M_NTFSNTHASH); 234 malloc_type_detach(M_NTFSNTVATTR); 235 malloc_type_detach(M_NTFSRDATA); 236 malloc_type_detach(M_NTFSDECOMP); 237 malloc_type_detach(M_NTFSRUN); 238 #endif 239 } 240 241 #elif defined(__FreeBSD__) 242 243 static int 244 ntfs_init ( 245 struct vfsconf *vcp ) 246 { 247 ntfs_nthashinit(); 248 ntfs_toupper_init(); 249 return 0; 250 } 251 252 #endif /* NetBSD */ 253 254 static int 255 ntfs_mount ( 256 struct mount *mp, 257 #if defined(__FreeBSD__) 258 char *path, 259 caddr_t data, 260 #else 261 const char *path, 262 void *data, 263 #endif 264 struct nameidata *ndp, 265 struct proc *p ) 266 { 267 int err = 0, flags; 268 struct vnode *devvp; 269 struct ntfs_args args; 270 271 if (mp->mnt_flag & MNT_GETARGS) { 272 struct ntfsmount *ntmp = VFSTONTFS(mp); 273 if (ntmp == NULL) 274 return EIO; 275 args.fspec = NULL; 276 args.uid = ntmp->ntm_uid; 277 args.gid = ntmp->ntm_gid; 278 args.mode = ntmp->ntm_mode; 279 args.flag = ntmp->ntm_flag; 280 vfs_showexport(mp, &args.export, &ntmp->ntm_export); 281 return copyout(&args, data, sizeof(args)); 282 } 283 /* 284 *** 285 * Mounting non-root file system or updating a file system 286 *** 287 */ 288 289 /* copy in user arguments*/ 290 err = copyin(data, &args, sizeof (struct ntfs_args)); 291 if (err) 292 return (err); /* can't get arguments*/ 293 294 /* 295 * If updating, check whether changing from read-only to 296 * read/write; if there is no device name, that's all we do. 297 */ 298 if (mp->mnt_flag & MNT_UPDATE) { 299 /* if not updating name...*/ 300 if (args.fspec == 0) { 301 /* 302 * Process export requests. Jumping to "success" 303 * will return the vfs_export() error code. 304 */ 305 struct ntfsmount *ntm = VFSTONTFS(mp); 306 return (vfs_export(mp, &ntm->ntm_export, &args.export)); 307 } 308 309 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 310 return (EINVAL); 311 } 312 313 /* 314 * Not an update, or updating the name: look up the name 315 * and verify that it refers to a sensible block device. 316 */ 317 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 318 err = namei(ndp); 319 if (err) { 320 /* can't get devvp!*/ 321 return (err); 322 } 323 324 devvp = ndp->ni_vp; 325 326 if (devvp->v_type != VBLK) { 327 err = ENOTBLK; 328 goto fail; 329 } 330 #ifdef __FreeBSD__ 331 if (bdevsw(devvp->v_rdev) == NULL) { 332 #else 333 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 334 #endif 335 err = ENXIO; 336 goto fail; 337 } 338 if (mp->mnt_flag & MNT_UPDATE) { 339 #if 0 340 /* 341 ******************** 342 * UPDATE 343 ******************** 344 */ 345 346 if (devvp != ntmp->um_devvp) { 347 err = EINVAL; /* needs translation */ 348 goto fail; 349 } 350 351 /* 352 * Update device name only on success 353 */ 354 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 355 UIO_USERSPACE, mp, p); 356 if (err) 357 goto fail; 358 359 vrele(devvp); 360 #endif 361 } else { 362 /* 363 ******************** 364 * NEW MOUNT 365 ******************** 366 */ 367 368 /* 369 * Since this is a new mount, we want the names for 370 * the device and the mount point copied in. If an 371 * error occurs, the mountpoint is discarded by the 372 * upper level code. 373 */ 374 375 /* Save "last mounted on" info for mount point (NULL pad)*/ 376 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 377 UIO_USERSPACE, mp, p); 378 if (err) 379 goto fail; 380 381 /* 382 * Disallow multiple mounts of the same device. 383 * Disallow mounting of a device that is currently in use 384 * (except for root, which might share swap device for 385 * miniroot). 386 */ 387 err = vfs_mountedon(devvp); 388 if (err) 389 goto fail; 390 if (vcount(devvp) > 1 && devvp != rootvp) { 391 err = EBUSY; 392 goto fail; 393 } 394 if (mp->mnt_flag & MNT_RDONLY) 395 flags = FREAD; 396 else 397 flags = FREAD|FWRITE; 398 err = VOP_OPEN(devvp, flags, FSCRED, p); 399 if (err) 400 goto fail; 401 err = ntfs_mountfs(devvp, mp, &args, p); 402 if (err) { 403 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 404 (void)VOP_CLOSE(devvp, flags, NOCRED, p); 405 VOP_UNLOCK(devvp, 0); 406 goto fail; 407 } 408 } 409 410 #ifdef __FreeBSD__ 411 dostatvfs: 412 #endif 413 /* 414 * Initialize FS stat information in mount struct; uses both 415 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 416 * 417 * This code is common to root and non-root mounts 418 */ 419 (void)VFS_STATVFS(mp, &mp->mnt_stat, p); 420 return (err); 421 422 fail: 423 vrele(devvp); 424 return (err); 425 } 426 427 /* 428 * Common code for mount and mountroot 429 */ 430 int 431 ntfs_mountfs(devvp, mp, argsp, p) 432 struct vnode *devvp; 433 struct mount *mp; 434 struct ntfs_args *argsp; 435 struct proc *p; 436 { 437 struct buf *bp; 438 struct ntfsmount *ntmp; 439 dev_t dev = devvp->v_rdev; 440 int error, ronly, i; 441 struct vnode *vp; 442 443 /* 444 * Flush out any old buffers remaining from a previous use. 445 */ 446 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 447 error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); 448 VOP_UNLOCK(devvp, 0); 449 if (error) 450 return (error); 451 452 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 453 454 bp = NULL; 455 456 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 457 if (error) 458 goto out; 459 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 460 bzero( ntmp, sizeof *ntmp ); 461 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 462 brelse( bp ); 463 bp = NULL; 464 465 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 466 error = EINVAL; 467 dprintf(("ntfs_mountfs: invalid boot block\n")); 468 goto out; 469 } 470 471 { 472 int8_t cpr = ntmp->ntm_mftrecsz; 473 if( cpr > 0 ) 474 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 475 else 476 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 477 } 478 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 479 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 480 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 481 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 482 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 483 484 ntmp->ntm_mountp = mp; 485 ntmp->ntm_dev = dev; 486 ntmp->ntm_devvp = devvp; 487 ntmp->ntm_uid = argsp->uid; 488 ntmp->ntm_gid = argsp->gid; 489 ntmp->ntm_mode = argsp->mode; 490 ntmp->ntm_flag = argsp->flag; 491 mp->mnt_data = ntmp; 492 493 /* set file name encode/decode hooks XXX utf-8 only for now */ 494 ntmp->ntm_wget = ntfs_utf8_wget; 495 ntmp->ntm_wput = ntfs_utf8_wput; 496 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 497 498 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 499 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 500 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 501 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 502 503 /* 504 * We read in some system nodes to do not allow 505 * reclaim them and to have everytime access to them. 506 */ 507 { 508 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 509 for (i=0; i<3; i++) { 510 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 511 if(error) 512 goto out1; 513 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 514 VREF(ntmp->ntm_sysvn[pi[i]]); 515 vput(ntmp->ntm_sysvn[pi[i]]); 516 } 517 } 518 519 /* read the Unicode lowercase --> uppercase translation table, 520 * if necessary */ 521 if ((error = ntfs_toupper_use(mp, ntmp))) 522 goto out1; 523 524 /* 525 * Scan $BitMap and count free clusters 526 */ 527 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 528 if(error) 529 goto out1; 530 531 /* 532 * Read and translate to internal format attribute 533 * definition file. 534 */ 535 { 536 int num,j; 537 struct attrdef ad; 538 539 /* Open $AttrDef */ 540 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 541 if(error) 542 goto out1; 543 544 /* Count valid entries */ 545 for(num=0;;num++) { 546 error = ntfs_readattr(ntmp, VTONT(vp), 547 NTFS_A_DATA, NULL, 548 num * sizeof(ad), sizeof(ad), 549 &ad, NULL); 550 if (error) 551 goto out1; 552 if (ad.ad_name[0] == 0) 553 break; 554 } 555 556 /* Alloc memory for attribute definitions */ 557 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 558 num * sizeof(struct ntvattrdef), 559 M_NTFSMNT, M_WAITOK); 560 561 ntmp->ntm_adnum = num; 562 563 /* Read them and translate */ 564 for(i=0;i<num;i++){ 565 error = ntfs_readattr(ntmp, VTONT(vp), 566 NTFS_A_DATA, NULL, 567 i * sizeof(ad), sizeof(ad), 568 &ad, NULL); 569 if (error) 570 goto out1; 571 j = 0; 572 do { 573 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 574 } while(ad.ad_name[j++]); 575 ntmp->ntm_ad[i].ad_namelen = j - 1; 576 ntmp->ntm_ad[i].ad_type = ad.ad_type; 577 } 578 579 vput(vp); 580 } 581 582 #if defined(__FreeBSD__) 583 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 584 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 585 #else 586 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 587 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 588 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 589 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 590 #endif 591 mp->mnt_flag |= MNT_LOCAL; 592 devvp->v_specmountpoint = mp; 593 return (0); 594 595 out1: 596 for(i=0;i<NTFS_SYSNODESNUM;i++) 597 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 598 599 if (vflush(mp,NULLVP,0)) 600 dprintf(("ntfs_mountfs: vflush failed\n")); 601 602 out: 603 devvp->v_specmountpoint = NULL; 604 if (bp) 605 brelse(bp); 606 607 return (error); 608 } 609 610 static int 611 ntfs_start ( 612 struct mount *mp, 613 int flags, 614 struct proc *p ) 615 { 616 return (0); 617 } 618 619 static int 620 ntfs_unmount( 621 struct mount *mp, 622 int mntflags, 623 struct proc *p) 624 { 625 struct ntfsmount *ntmp; 626 int error, ronly = 0, flags, i; 627 628 dprintf(("ntfs_unmount: unmounting...\n")); 629 ntmp = VFSTONTFS(mp); 630 631 flags = 0; 632 if(mntflags & MNT_FORCE) 633 flags |= FORCECLOSE; 634 635 dprintf(("ntfs_unmount: vflushing...\n")); 636 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 637 if (error) { 638 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 639 return (error); 640 } 641 642 /* Check if only system vnodes are rest */ 643 for(i=0;i<NTFS_SYSNODESNUM;i++) 644 if((ntmp->ntm_sysvn[i]) && 645 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 646 647 /* Dereference all system vnodes */ 648 for(i=0;i<NTFS_SYSNODESNUM;i++) 649 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 650 651 /* vflush system vnodes */ 652 error = vflush(mp,NULLVP,flags); 653 if (error) { 654 /* XXX should this be panic() ? */ 655 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 656 } 657 658 /* Check if the type of device node isn't VBAD before 659 * touching v_specinfo. If the device vnode is revoked, the 660 * field is NULL and touching it causes null pointer derefercence. 661 */ 662 if (ntmp->ntm_devvp->v_type != VBAD) 663 ntmp->ntm_devvp->v_specmountpoint = NULL; 664 665 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0); 666 667 /* lock the device vnode before calling VOP_CLOSE() */ 668 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 669 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 670 NOCRED, p); 671 VOP_UNLOCK(ntmp->ntm_devvp, 0); 672 673 vrele(ntmp->ntm_devvp); 674 675 /* free the toupper table, if this has been last mounted ntfs volume */ 676 ntfs_toupper_unuse(); 677 678 dprintf(("ntfs_umount: freeing memory...\n")); 679 mp->mnt_data = NULL; 680 mp->mnt_flag &= ~MNT_LOCAL; 681 free(ntmp->ntm_ad, M_NTFSMNT); 682 FREE(ntmp, M_NTFSMNT); 683 return (error); 684 } 685 686 static int 687 ntfs_root( 688 struct mount *mp, 689 struct vnode **vpp ) 690 { 691 struct vnode *nvp; 692 int error = 0; 693 694 dprintf(("ntfs_root(): sysvn: %p\n", 695 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 696 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 697 if(error) { 698 printf("ntfs_root: VFS_VGET failed: %d\n",error); 699 return (error); 700 } 701 702 *vpp = nvp; 703 return (0); 704 } 705 706 /* 707 * Do operations associated with quotas, not supported 708 */ 709 /* ARGSUSED */ 710 static int 711 ntfs_quotactl ( 712 struct mount *mp, 713 int cmds, 714 uid_t uid, 715 void *arg, 716 struct proc *p) 717 { 718 719 return EOPNOTSUPP; 720 } 721 722 int 723 ntfs_calccfree( 724 struct ntfsmount *ntmp, 725 cn_t *cfreep) 726 { 727 struct vnode *vp; 728 u_int8_t *tmp; 729 int j, error; 730 cn_t cfree = 0; 731 size_t bmsize, i; 732 733 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 734 735 bmsize = VTOF(vp)->f_size; 736 737 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 738 739 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 740 0, bmsize, tmp, NULL); 741 if (error) 742 goto out; 743 744 for(i=0;i<bmsize;i++) 745 for(j=0;j<8;j++) 746 if(~tmp[i] & (1 << j)) cfree++; 747 *cfreep = cfree; 748 749 out: 750 free(tmp, M_TEMP); 751 return(error); 752 } 753 754 static int 755 ntfs_statvfs( 756 struct mount *mp, 757 struct statvfs *sbp, 758 struct proc *p) 759 { 760 struct ntfsmount *ntmp = VFSTONTFS(mp); 761 u_int64_t mftallocated; 762 763 dprintf(("ntfs_statvfs():\n")); 764 765 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 766 767 #if defined(__FreeBSD__) 768 sbp->f_type = mp->mnt_vfc->vfc_typenum; 769 #endif 770 sbp->f_bsize = ntmp->ntm_bps; 771 sbp->f_frsize = sbp->f_bsize; /* XXX */ 772 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 773 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 774 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 775 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 776 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 777 sbp->f_ffree; 778 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 779 sbp->f_flag = mp->mnt_flag; 780 copy_statvfs_info(sbp, mp); 781 return (0); 782 } 783 784 static int 785 ntfs_sync ( 786 struct mount *mp, 787 int waitfor, 788 struct ucred *cred, 789 struct proc *p) 790 { 791 /*dprintf(("ntfs_sync():\n"));*/ 792 return (0); 793 } 794 795 /*ARGSUSED*/ 796 static int 797 ntfs_fhtovp( 798 #if defined(__FreeBSD__) 799 struct mount *mp, 800 struct fid *fhp, 801 struct sockaddr *nam, 802 struct vnode **vpp, 803 int *exflagsp, 804 struct ucred **credanonp) 805 #elif defined(__NetBSD__) 806 struct mount *mp, 807 struct fid *fhp, 808 struct vnode **vpp) 809 #else 810 struct mount *mp, 811 struct fid *fhp, 812 struct mbuf *nam, 813 struct vnode **vpp, 814 int *exflagsp, 815 struct ucred **credanonp) 816 #endif 817 { 818 struct ntfid *ntfhp = (struct ntfid *)fhp; 819 int error; 820 821 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 822 ntfhp->ntfid_ino)); 823 824 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 825 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 826 if (error != 0) { 827 *vpp = NULLVP; 828 return (error); 829 } 830 831 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 832 * with NTFS, we don't need to check anything else for now */ 833 return (0); 834 } 835 836 static int 837 ntfs_vptofh( 838 struct vnode *vp, 839 struct fid *fhp) 840 { 841 struct ntnode *ntp; 842 struct ntfid *ntfhp; 843 struct fnode *fn; 844 845 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 846 vp)); 847 848 fn = VTOF(vp); 849 ntp = VTONT(vp); 850 ntfhp = (struct ntfid *)fhp; 851 ntfhp->ntfid_len = sizeof(struct ntfid); 852 ntfhp->ntfid_ino = ntp->i_number; 853 ntfhp->ntfid_attr = fn->f_attrtype; 854 #ifdef notyet 855 ntfhp->ntfid_gen = ntp->i_gen; 856 #endif 857 return (0); 858 } 859 860 int 861 ntfs_vgetex( 862 struct mount *mp, 863 ino_t ino, 864 u_int32_t attrtype, 865 char *attrname, 866 u_long lkflags, 867 u_long flags, 868 struct proc *p, 869 struct vnode **vpp) 870 { 871 int error; 872 struct ntfsmount *ntmp; 873 struct ntnode *ip; 874 struct fnode *fp; 875 struct vnode *vp; 876 enum vtype f_type = VBAD; 877 878 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 879 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 880 (u_long)flags )); 881 882 ntmp = VFSTONTFS(mp); 883 *vpp = NULL; 884 885 /* Get ntnode */ 886 error = ntfs_ntlookup(ntmp, ino, &ip); 887 if (error) { 888 printf("ntfs_vget: ntfs_ntget failed\n"); 889 return (error); 890 } 891 892 /* It may be not initialized fully, so force load it */ 893 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 894 error = ntfs_loadntnode(ntmp, ip); 895 if(error) { 896 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 897 " %llu\n", (unsigned long long)ip->i_number); 898 ntfs_ntput(ip); 899 return (error); 900 } 901 } 902 903 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 904 if (error) { 905 printf("ntfs_vget: ntfs_fget failed\n"); 906 ntfs_ntput(ip); 907 return (error); 908 } 909 910 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 911 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 912 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 913 f_type = VDIR; 914 } else if (flags & VG_EXT) { 915 f_type = VNON; 916 fp->f_size = fp->f_allocated = 0; 917 } else { 918 f_type = VREG; 919 920 error = ntfs_filesize(ntmp, fp, 921 &fp->f_size, &fp->f_allocated); 922 if (error) { 923 ntfs_ntput(ip); 924 return (error); 925 } 926 } 927 928 fp->f_flag |= FN_VALID; 929 } 930 931 /* 932 * We may be calling vget() now. To avoid potential deadlock, we need 933 * to release ntnode lock, since due to locking order vnode 934 * lock has to be acquired first. 935 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 936 * prematurely. 937 */ 938 ntfs_ntput(ip); 939 940 if (FTOV(fp)) { 941 /* vget() returns error if the vnode has been recycled */ 942 if (vget(FTOV(fp), lkflags) == 0) { 943 *vpp = FTOV(fp); 944 return (0); 945 } 946 } 947 948 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 949 if(error) { 950 ntfs_frele(fp); 951 ntfs_ntput(ip); 952 return (error); 953 } 954 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 955 956 #ifdef __FreeBSD__ 957 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 958 #endif 959 fp->f_vp = vp; 960 vp->v_data = fp; 961 if (f_type != VBAD) 962 vp->v_type = f_type; 963 964 if (ino == NTFS_ROOTINO) 965 vp->v_flag |= VROOT; 966 967 if (lkflags & LK_TYPE_MASK) { 968 error = vn_lock(vp, lkflags); 969 if (error) { 970 vput(vp); 971 return (error); 972 } 973 } 974 975 genfs_node_init(vp, &ntfs_genfsops); 976 VREF(ip->i_devvp); 977 *vpp = vp; 978 return (0); 979 } 980 981 static int 982 ntfs_vget( 983 struct mount *mp, 984 ino_t ino, 985 struct vnode **vpp) 986 { 987 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 988 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 989 } 990 991 #if defined(__FreeBSD__) 992 static struct vfsops ntfs_vfsops = { 993 ntfs_mount, 994 ntfs_start, 995 ntfs_unmount, 996 ntfs_root, 997 ntfs_quotactl, 998 ntfs_statvfs, 999 ntfs_sync, 1000 ntfs_vget, 1001 ntfs_fhtovp, 1002 ntfs_vptofh, 1003 ntfs_init, 1004 NULL 1005 }; 1006 VFS_SET(ntfs_vfsops, ntfs, 0); 1007 #elif defined(__NetBSD__) 1008 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 1009 1010 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 1011 &ntfs_vnodeop_opv_desc, 1012 NULL, 1013 }; 1014 1015 struct vfsops ntfs_vfsops = { 1016 MOUNT_NTFS, 1017 ntfs_mount, 1018 ntfs_start, 1019 ntfs_unmount, 1020 ntfs_root, 1021 ntfs_quotactl, 1022 ntfs_statvfs, 1023 ntfs_sync, 1024 ntfs_vget, 1025 ntfs_fhtovp, 1026 ntfs_vptofh, 1027 ntfs_init, 1028 ntfs_reinit, 1029 ntfs_done, 1030 NULL, 1031 ntfs_mountroot, 1032 ntfs_checkexp, 1033 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 1034 vfs_stdextattrctl, 1035 ntfs_vnodeopv_descs, 1036 }; 1037 VFS_ATTACH(ntfs_vfsops); 1038 #endif 1039
Indexes created Wed Sep 24 22:09:59 GMT 2025