ntfs_vfsops.c revision 1.34
1 /* $NetBSD: ntfs_vfsops.c,v 1.34 2005/09/23 12:10:32 jmmv 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 1.34 2005/09/23 12:10:32 jmmv 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_mountroot(void); 103 #else 104 static int ntfs_init(void); 105 static int ntfs_fhtovp(struct mount *, struct fid *, 106 struct mbuf *, struct vnode **, 107 int *, struct ucred **); 108 #endif 109 110 static const struct genfs_ops ntfs_genfsops = { 111 .gop_write = genfs_compat_gop_write, 112 }; 113 114 #ifdef __NetBSD__ 115 116 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 117 { 118 119 sysctl_createv(clog, 0, NULL, NULL, 120 CTLFLAG_PERMANENT, 121 CTLTYPE_NODE, "vfs", NULL, 122 NULL, 0, NULL, 0, 123 CTL_VFS, CTL_EOL); 124 sysctl_createv(clog, 0, NULL, NULL, 125 CTLFLAG_PERMANENT, 126 CTLTYPE_NODE, "ntfs", 127 SYSCTL_DESCR("NTFS file system"), 128 NULL, 0, NULL, 0, 129 CTL_VFS, 20, CTL_EOL); 130 /* 131 * XXX the "20" above could be dynamic, thereby eliminating 132 * one more instance of the "number to vfs" mapping problem, 133 * but "20" is the order as taken from sys/mount.h 134 */ 135 } 136 137 static int 138 ntfs_mountroot() 139 { 140 struct mount *mp; 141 struct proc *p = curproc; /* XXX */ 142 int error; 143 struct ntfs_args args; 144 145 if (root_device->dv_class != DV_DISK) 146 return (ENODEV); 147 148 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 149 vrele(rootvp); 150 return (error); 151 } 152 153 args.flag = 0; 154 args.uid = 0; 155 args.gid = 0; 156 args.mode = 0777; 157 158 if ((error = ntfs_mountfs(rootvp, mp, &args, p)) != 0) { 159 mp->mnt_op->vfs_refcount--; 160 vfs_unbusy(mp); 161 free(mp, M_MOUNT); 162 return (error); 163 } 164 165 simple_lock(&mountlist_slock); 166 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 167 simple_unlock(&mountlist_slock); 168 (void)ntfs_statvfs(mp, &mp->mnt_stat, p); 169 vfs_unbusy(mp); 170 return (0); 171 } 172 173 static void 174 ntfs_init() 175 { 176 #ifdef _LKM 177 malloc_type_attach(M_NTFSMNT); 178 malloc_type_attach(M_NTFSNTNODE); 179 malloc_type_attach(M_NTFSFNODE); 180 malloc_type_attach(M_NTFSDIR); 181 malloc_type_attach(M_NTFSNTHASH); 182 malloc_type_attach(M_NTFSNTVATTR); 183 malloc_type_attach(M_NTFSRDATA); 184 malloc_type_attach(M_NTFSDECOMP); 185 malloc_type_attach(M_NTFSRUN); 186 #endif 187 ntfs_nthashinit(); 188 ntfs_toupper_init(); 189 } 190 191 static void 192 ntfs_reinit() 193 { 194 ntfs_nthashreinit(); 195 } 196 197 static void 198 ntfs_done() 199 { 200 ntfs_nthashdone(); 201 #ifdef _LKM 202 malloc_type_detach(M_NTFSMNT); 203 malloc_type_detach(M_NTFSNTNODE); 204 malloc_type_detach(M_NTFSFNODE); 205 malloc_type_detach(M_NTFSDIR); 206 malloc_type_detach(M_NTFSNTHASH); 207 malloc_type_detach(M_NTFSNTVATTR); 208 malloc_type_detach(M_NTFSRDATA); 209 malloc_type_detach(M_NTFSDECOMP); 210 malloc_type_detach(M_NTFSRUN); 211 #endif 212 } 213 214 #elif defined(__FreeBSD__) 215 216 static int 217 ntfs_init ( 218 struct vfsconf *vcp ) 219 { 220 ntfs_nthashinit(); 221 ntfs_toupper_init(); 222 return 0; 223 } 224 225 #endif /* NetBSD */ 226 227 static int 228 ntfs_mount ( 229 struct mount *mp, 230 #if defined(__FreeBSD__) 231 char *path, 232 caddr_t data, 233 #else 234 const char *path, 235 void *data, 236 #endif 237 struct nameidata *ndp, 238 struct proc *p ) 239 { 240 int err = 0, flags; 241 struct vnode *devvp; 242 struct ntfs_args args; 243 244 if (mp->mnt_flag & MNT_GETARGS) { 245 struct ntfsmount *ntmp = VFSTONTFS(mp); 246 if (ntmp == NULL) 247 return EIO; 248 args.fspec = NULL; 249 args.uid = ntmp->ntm_uid; 250 args.gid = ntmp->ntm_gid; 251 args.mode = ntmp->ntm_mode; 252 args.flag = ntmp->ntm_flag; 253 return copyout(&args, data, sizeof(args)); 254 } 255 /* 256 *** 257 * Mounting non-root file system or updating a file system 258 *** 259 */ 260 261 /* copy in user arguments*/ 262 err = copyin(data, &args, sizeof (struct ntfs_args)); 263 if (err) 264 return (err); /* can't get arguments*/ 265 266 /* 267 * If updating, check whether changing from read-only to 268 * read/write; if there is no device name, that's all we do. 269 */ 270 if (mp->mnt_flag & MNT_UPDATE) { 271 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 272 return (EINVAL); 273 } 274 275 /* 276 * Not an update, or updating the name: look up the name 277 * and verify that it refers to a sensible block device. 278 */ 279 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 280 err = namei(ndp); 281 if (err) { 282 /* can't get devvp!*/ 283 return (err); 284 } 285 286 devvp = ndp->ni_vp; 287 288 if (devvp->v_type != VBLK) { 289 err = ENOTBLK; 290 goto fail; 291 } 292 #ifdef __FreeBSD__ 293 if (bdevsw(devvp->v_rdev) == NULL) { 294 #else 295 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 296 #endif 297 err = ENXIO; 298 goto fail; 299 } 300 if (mp->mnt_flag & MNT_UPDATE) { 301 #if 0 302 /* 303 ******************** 304 * UPDATE 305 ******************** 306 */ 307 308 if (devvp != ntmp->um_devvp) { 309 err = EINVAL; /* needs translation */ 310 goto fail; 311 } 312 313 /* 314 * Update device name only on success 315 */ 316 err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec, 317 UIO_USERSPACE, mp, p); 318 if (err) 319 goto fail; 320 321 vrele(devvp); 322 #endif 323 } else { 324 /* 325 ******************** 326 * NEW MOUNT 327 ******************** 328 */ 329 330 /* 331 * Since this is a new mount, we want the names for 332 * the device and the mount point copied in. If an 333 * error occurs, the mountpoint is discarded by the 334 * upper level code. 335 */ 336 337 /* Save "last mounted on" info for mount point (NULL pad)*/ 338 err = set_statvfs_info(path, UIO_USERSPACE, args.fspec, 339 UIO_USERSPACE, mp, p); 340 if (err) 341 goto fail; 342 343 /* 344 * Disallow multiple mounts of the same device. 345 * Disallow mounting of a device that is currently in use 346 * (except for root, which might share swap device for 347 * miniroot). 348 */ 349 err = vfs_mountedon(devvp); 350 if (err) 351 goto fail; 352 if (vcount(devvp) > 1 && devvp != rootvp) { 353 err = EBUSY; 354 goto fail; 355 } 356 if (mp->mnt_flag & MNT_RDONLY) 357 flags = FREAD; 358 else 359 flags = FREAD|FWRITE; 360 err = VOP_OPEN(devvp, flags, FSCRED, p); 361 if (err) 362 goto fail; 363 err = ntfs_mountfs(devvp, mp, &args, p); 364 if (err) { 365 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 366 (void)VOP_CLOSE(devvp, flags, NOCRED, p); 367 VOP_UNLOCK(devvp, 0); 368 goto fail; 369 } 370 } 371 372 #ifdef __FreeBSD__ 373 dostatvfs: 374 #endif 375 /* 376 * Initialize FS stat information in mount struct; uses both 377 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 378 * 379 * This code is common to root and non-root mounts 380 */ 381 (void)VFS_STATVFS(mp, &mp->mnt_stat, p); 382 return (err); 383 384 fail: 385 vrele(devvp); 386 return (err); 387 } 388 389 /* 390 * Common code for mount and mountroot 391 */ 392 int 393 ntfs_mountfs(devvp, mp, argsp, p) 394 struct vnode *devvp; 395 struct mount *mp; 396 struct ntfs_args *argsp; 397 struct proc *p; 398 { 399 struct buf *bp; 400 struct ntfsmount *ntmp; 401 dev_t dev = devvp->v_rdev; 402 int error, ronly, i; 403 struct vnode *vp; 404 405 /* 406 * Flush out any old buffers remaining from a previous use. 407 */ 408 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 409 error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); 410 VOP_UNLOCK(devvp, 0); 411 if (error) 412 return (error); 413 414 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 415 416 bp = NULL; 417 418 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 419 if (error) 420 goto out; 421 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 422 bzero( ntmp, sizeof *ntmp ); 423 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 424 brelse( bp ); 425 bp = NULL; 426 427 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 428 error = EINVAL; 429 dprintf(("ntfs_mountfs: invalid boot block\n")); 430 goto out; 431 } 432 433 { 434 int8_t cpr = ntmp->ntm_mftrecsz; 435 if( cpr > 0 ) 436 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 437 else 438 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 439 } 440 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 441 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 442 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 443 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 444 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 445 446 ntmp->ntm_mountp = mp; 447 ntmp->ntm_dev = dev; 448 ntmp->ntm_devvp = devvp; 449 ntmp->ntm_uid = argsp->uid; 450 ntmp->ntm_gid = argsp->gid; 451 ntmp->ntm_mode = argsp->mode; 452 ntmp->ntm_flag = argsp->flag; 453 mp->mnt_data = ntmp; 454 455 /* set file name encode/decode hooks XXX utf-8 only for now */ 456 ntmp->ntm_wget = ntfs_utf8_wget; 457 ntmp->ntm_wput = ntfs_utf8_wput; 458 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 459 460 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 461 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 462 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 463 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 464 465 /* 466 * We read in some system nodes to do not allow 467 * reclaim them and to have everytime access to them. 468 */ 469 { 470 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 471 for (i=0; i<3; i++) { 472 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 473 if(error) 474 goto out1; 475 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 476 VREF(ntmp->ntm_sysvn[pi[i]]); 477 vput(ntmp->ntm_sysvn[pi[i]]); 478 } 479 } 480 481 /* read the Unicode lowercase --> uppercase translation table, 482 * if necessary */ 483 if ((error = ntfs_toupper_use(mp, ntmp))) 484 goto out1; 485 486 /* 487 * Scan $BitMap and count free clusters 488 */ 489 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 490 if(error) 491 goto out1; 492 493 /* 494 * Read and translate to internal format attribute 495 * definition file. 496 */ 497 { 498 int num,j; 499 struct attrdef ad; 500 501 /* Open $AttrDef */ 502 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 503 if(error) 504 goto out1; 505 506 /* Count valid entries */ 507 for(num=0;;num++) { 508 error = ntfs_readattr(ntmp, VTONT(vp), 509 NTFS_A_DATA, NULL, 510 num * sizeof(ad), sizeof(ad), 511 &ad, NULL); 512 if (error) 513 goto out1; 514 if (ad.ad_name[0] == 0) 515 break; 516 } 517 518 /* Alloc memory for attribute definitions */ 519 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 520 num * sizeof(struct ntvattrdef), 521 M_NTFSMNT, M_WAITOK); 522 523 ntmp->ntm_adnum = num; 524 525 /* Read them and translate */ 526 for(i=0;i<num;i++){ 527 error = ntfs_readattr(ntmp, VTONT(vp), 528 NTFS_A_DATA, NULL, 529 i * sizeof(ad), sizeof(ad), 530 &ad, NULL); 531 if (error) 532 goto out1; 533 j = 0; 534 do { 535 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 536 } while(ad.ad_name[j++]); 537 ntmp->ntm_ad[i].ad_namelen = j - 1; 538 ntmp->ntm_ad[i].ad_type = ad.ad_type; 539 } 540 541 vput(vp); 542 } 543 544 #if defined(__FreeBSD__) 545 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 546 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 547 #else 548 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 549 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 550 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 551 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 552 #endif 553 mp->mnt_flag |= MNT_LOCAL; 554 devvp->v_specmountpoint = mp; 555 return (0); 556 557 out1: 558 for(i=0;i<NTFS_SYSNODESNUM;i++) 559 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 560 561 if (vflush(mp,NULLVP,0)) 562 dprintf(("ntfs_mountfs: vflush failed\n")); 563 564 out: 565 devvp->v_specmountpoint = NULL; 566 if (bp) 567 brelse(bp); 568 569 return (error); 570 } 571 572 static int 573 ntfs_start ( 574 struct mount *mp, 575 int flags, 576 struct proc *p ) 577 { 578 return (0); 579 } 580 581 static int 582 ntfs_unmount( 583 struct mount *mp, 584 int mntflags, 585 struct proc *p) 586 { 587 struct ntfsmount *ntmp; 588 int error, ronly = 0, flags, i; 589 590 dprintf(("ntfs_unmount: unmounting...\n")); 591 ntmp = VFSTONTFS(mp); 592 593 flags = 0; 594 if(mntflags & MNT_FORCE) 595 flags |= FORCECLOSE; 596 597 dprintf(("ntfs_unmount: vflushing...\n")); 598 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 599 if (error) { 600 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 601 return (error); 602 } 603 604 /* Check if only system vnodes are rest */ 605 for(i=0;i<NTFS_SYSNODESNUM;i++) 606 if((ntmp->ntm_sysvn[i]) && 607 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 608 609 /* Dereference all system vnodes */ 610 for(i=0;i<NTFS_SYSNODESNUM;i++) 611 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 612 613 /* vflush system vnodes */ 614 error = vflush(mp,NULLVP,flags); 615 if (error) { 616 /* XXX should this be panic() ? */ 617 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 618 } 619 620 /* Check if the type of device node isn't VBAD before 621 * touching v_specinfo. If the device vnode is revoked, the 622 * field is NULL and touching it causes null pointer derefercence. 623 */ 624 if (ntmp->ntm_devvp->v_type != VBAD) 625 ntmp->ntm_devvp->v_specmountpoint = NULL; 626 627 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0); 628 629 /* lock the device vnode before calling VOP_CLOSE() */ 630 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 631 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 632 NOCRED, p); 633 VOP_UNLOCK(ntmp->ntm_devvp, 0); 634 635 vrele(ntmp->ntm_devvp); 636 637 /* free the toupper table, if this has been last mounted ntfs volume */ 638 ntfs_toupper_unuse(); 639 640 dprintf(("ntfs_umount: freeing memory...\n")); 641 mp->mnt_data = NULL; 642 mp->mnt_flag &= ~MNT_LOCAL; 643 free(ntmp->ntm_ad, M_NTFSMNT); 644 FREE(ntmp, M_NTFSMNT); 645 return (error); 646 } 647 648 static int 649 ntfs_root( 650 struct mount *mp, 651 struct vnode **vpp ) 652 { 653 struct vnode *nvp; 654 int error = 0; 655 656 dprintf(("ntfs_root(): sysvn: %p\n", 657 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 658 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 659 if(error) { 660 printf("ntfs_root: VFS_VGET failed: %d\n",error); 661 return (error); 662 } 663 664 *vpp = nvp; 665 return (0); 666 } 667 668 /* 669 * Do operations associated with quotas, not supported 670 */ 671 /* ARGSUSED */ 672 static int 673 ntfs_quotactl ( 674 struct mount *mp, 675 int cmds, 676 uid_t uid, 677 void *arg, 678 struct proc *p) 679 { 680 681 return EOPNOTSUPP; 682 } 683 684 int 685 ntfs_calccfree( 686 struct ntfsmount *ntmp, 687 cn_t *cfreep) 688 { 689 struct vnode *vp; 690 u_int8_t *tmp; 691 int j, error; 692 cn_t cfree = 0; 693 size_t bmsize, i; 694 695 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 696 697 bmsize = VTOF(vp)->f_size; 698 699 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 700 701 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 702 0, bmsize, tmp, NULL); 703 if (error) 704 goto out; 705 706 for(i=0;i<bmsize;i++) 707 for(j=0;j<8;j++) 708 if(~tmp[i] & (1 << j)) cfree++; 709 *cfreep = cfree; 710 711 out: 712 free(tmp, M_TEMP); 713 return(error); 714 } 715 716 static int 717 ntfs_statvfs( 718 struct mount *mp, 719 struct statvfs *sbp, 720 struct proc *p) 721 { 722 struct ntfsmount *ntmp = VFSTONTFS(mp); 723 u_int64_t mftallocated; 724 725 dprintf(("ntfs_statvfs():\n")); 726 727 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 728 729 #if defined(__FreeBSD__) 730 sbp->f_type = mp->mnt_vfc->vfc_typenum; 731 #endif 732 sbp->f_bsize = ntmp->ntm_bps; 733 sbp->f_frsize = sbp->f_bsize; /* XXX */ 734 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 735 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 736 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 737 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 738 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 739 sbp->f_ffree; 740 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 741 sbp->f_flag = mp->mnt_flag; 742 copy_statvfs_info(sbp, mp); 743 return (0); 744 } 745 746 static int 747 ntfs_sync ( 748 struct mount *mp, 749 int waitfor, 750 struct ucred *cred, 751 struct proc *p) 752 { 753 /*dprintf(("ntfs_sync():\n"));*/ 754 return (0); 755 } 756 757 /*ARGSUSED*/ 758 static int 759 ntfs_fhtovp( 760 #if defined(__FreeBSD__) 761 struct mount *mp, 762 struct fid *fhp, 763 struct sockaddr *nam, 764 struct vnode **vpp, 765 int *exflagsp, 766 struct ucred **credanonp) 767 #elif defined(__NetBSD__) 768 struct mount *mp, 769 struct fid *fhp, 770 struct vnode **vpp) 771 #else 772 struct mount *mp, 773 struct fid *fhp, 774 struct mbuf *nam, 775 struct vnode **vpp, 776 int *exflagsp, 777 struct ucred **credanonp) 778 #endif 779 { 780 struct ntfid *ntfhp = (struct ntfid *)fhp; 781 int error; 782 783 ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname, 784 ntfhp->ntfid_ino)); 785 786 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 787 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 788 if (error != 0) { 789 *vpp = NULLVP; 790 return (error); 791 } 792 793 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 794 * with NTFS, we don't need to check anything else for now */ 795 return (0); 796 } 797 798 static int 799 ntfs_vptofh( 800 struct vnode *vp, 801 struct fid *fhp) 802 { 803 struct ntnode *ntp; 804 struct ntfid *ntfhp; 805 struct fnode *fn; 806 807 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 808 vp)); 809 810 fn = VTOF(vp); 811 ntp = VTONT(vp); 812 ntfhp = (struct ntfid *)fhp; 813 ntfhp->ntfid_len = sizeof(struct ntfid); 814 ntfhp->ntfid_ino = ntp->i_number; 815 ntfhp->ntfid_attr = fn->f_attrtype; 816 #ifdef notyet 817 ntfhp->ntfid_gen = ntp->i_gen; 818 #endif 819 return (0); 820 } 821 822 int 823 ntfs_vgetex( 824 struct mount *mp, 825 ino_t ino, 826 u_int32_t attrtype, 827 char *attrname, 828 u_long lkflags, 829 u_long flags, 830 struct proc *p, 831 struct vnode **vpp) 832 { 833 int error; 834 struct ntfsmount *ntmp; 835 struct ntnode *ip; 836 struct fnode *fp; 837 struct vnode *vp; 838 enum vtype f_type = VBAD; 839 840 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 841 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 842 (u_long)flags )); 843 844 ntmp = VFSTONTFS(mp); 845 *vpp = NULL; 846 847 /* Get ntnode */ 848 error = ntfs_ntlookup(ntmp, ino, &ip); 849 if (error) { 850 printf("ntfs_vget: ntfs_ntget failed\n"); 851 return (error); 852 } 853 854 /* It may be not initialized fully, so force load it */ 855 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 856 error = ntfs_loadntnode(ntmp, ip); 857 if(error) { 858 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 859 " %llu\n", (unsigned long long)ip->i_number); 860 ntfs_ntput(ip); 861 return (error); 862 } 863 } 864 865 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 866 if (error) { 867 printf("ntfs_vget: ntfs_fget failed\n"); 868 ntfs_ntput(ip); 869 return (error); 870 } 871 872 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 873 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 874 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 875 f_type = VDIR; 876 } else if (flags & VG_EXT) { 877 f_type = VNON; 878 fp->f_size = fp->f_allocated = 0; 879 } else { 880 f_type = VREG; 881 882 error = ntfs_filesize(ntmp, fp, 883 &fp->f_size, &fp->f_allocated); 884 if (error) { 885 ntfs_ntput(ip); 886 return (error); 887 } 888 } 889 890 fp->f_flag |= FN_VALID; 891 } 892 893 /* 894 * We may be calling vget() now. To avoid potential deadlock, we need 895 * to release ntnode lock, since due to locking order vnode 896 * lock has to be acquired first. 897 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 898 * prematurely. 899 */ 900 ntfs_ntput(ip); 901 902 if (FTOV(fp)) { 903 /* vget() returns error if the vnode has been recycled */ 904 if (vget(FTOV(fp), lkflags) == 0) { 905 *vpp = FTOV(fp); 906 return (0); 907 } 908 } 909 910 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 911 if(error) { 912 ntfs_frele(fp); 913 ntfs_ntput(ip); 914 return (error); 915 } 916 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 917 918 #ifdef __FreeBSD__ 919 lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); 920 #endif 921 fp->f_vp = vp; 922 vp->v_data = fp; 923 if (f_type != VBAD) 924 vp->v_type = f_type; 925 926 if (ino == NTFS_ROOTINO) 927 vp->v_flag |= VROOT; 928 929 if (lkflags & LK_TYPE_MASK) { 930 error = vn_lock(vp, lkflags); 931 if (error) { 932 vput(vp); 933 return (error); 934 } 935 } 936 937 genfs_node_init(vp, &ntfs_genfsops); 938 VREF(ip->i_devvp); 939 *vpp = vp; 940 return (0); 941 } 942 943 static int 944 ntfs_vget( 945 struct mount *mp, 946 ino_t ino, 947 struct vnode **vpp) 948 { 949 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 950 LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */ 951 } 952 953 #if defined(__FreeBSD__) 954 static struct vfsops ntfs_vfsops = { 955 ntfs_mount, 956 ntfs_start, 957 ntfs_unmount, 958 ntfs_root, 959 ntfs_quotactl, 960 ntfs_statvfs, 961 ntfs_sync, 962 ntfs_vget, 963 ntfs_fhtovp, 964 ntfs_vptofh, 965 ntfs_init, 966 NULL 967 }; 968 VFS_SET(ntfs_vfsops, ntfs, 0); 969 #elif defined(__NetBSD__) 970 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 971 972 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 973 &ntfs_vnodeop_opv_desc, 974 NULL, 975 }; 976 977 struct vfsops ntfs_vfsops = { 978 MOUNT_NTFS, 979 ntfs_mount, 980 ntfs_start, 981 ntfs_unmount, 982 ntfs_root, 983 ntfs_quotactl, 984 ntfs_statvfs, 985 ntfs_sync, 986 ntfs_vget, 987 ntfs_fhtovp, 988 ntfs_vptofh, 989 ntfs_init, 990 ntfs_reinit, 991 ntfs_done, 992 ntfs_mountroot, 993 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 994 vfs_stdextattrctl, 995 ntfs_vnodeopv_descs, 996 }; 997 VFS_ATTACH(ntfs_vfsops); 998 #endif 999
Indexes created Wed Oct 01 15:09:59 GMT 2025