ntfs_vfsops.c revision 1.67
1 /* $NetBSD: ntfs_vfsops.c,v 1.67 2008/04/30 12:49:16 ad 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 1.67 2008/04/30 12:49:16 ad 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 #include <sys/kauth.h> 48 49 #include <uvm/uvm_extern.h> 50 51 #include <miscfs/genfs/genfs.h> 52 #include <miscfs/specfs/specdev.h> 53 54 #include <fs/ntfs/ntfs.h> 55 #include <fs/ntfs/ntfs_inode.h> 56 #include <fs/ntfs/ntfs_subr.h> 57 #include <fs/ntfs/ntfs_vfsops.h> 58 #include <fs/ntfs/ntfs_ihash.h> 59 #include <fs/ntfs/ntfsmount.h> 60 61 MALLOC_JUSTDEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 62 MALLOC_JUSTDEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 63 MALLOC_JUSTDEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 64 MALLOC_JUSTDEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 65 66 static int ntfs_mount(struct mount *, const char *, void *, size_t *); 67 static int ntfs_root(struct mount *, struct vnode **); 68 static int ntfs_start(struct mount *, int); 69 static int ntfs_statvfs(struct mount *, struct statvfs *); 70 static int ntfs_sync(struct mount *, int, kauth_cred_t); 71 static int ntfs_unmount(struct mount *, int); 72 static int ntfs_vget(struct mount *mp, ino_t ino, 73 struct vnode **vpp); 74 static int ntfs_mountfs(struct vnode *, struct mount *, 75 struct ntfs_args *, struct lwp *); 76 static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); 77 78 static void ntfs_init(void); 79 static void ntfs_reinit(void); 80 static void ntfs_done(void); 81 static int ntfs_fhtovp(struct mount *, struct fid *, 82 struct vnode **); 83 static int ntfs_mountroot(void); 84 85 static const struct genfs_ops ntfs_genfsops = { 86 .gop_write = genfs_compat_gop_write, 87 }; 88 89 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup") 90 { 91 92 sysctl_createv(clog, 0, NULL, NULL, 93 CTLFLAG_PERMANENT, 94 CTLTYPE_NODE, "vfs", NULL, 95 NULL, 0, NULL, 0, 96 CTL_VFS, CTL_EOL); 97 sysctl_createv(clog, 0, NULL, NULL, 98 CTLFLAG_PERMANENT, 99 CTLTYPE_NODE, "ntfs", 100 SYSCTL_DESCR("NTFS file system"), 101 NULL, 0, NULL, 0, 102 CTL_VFS, 20, CTL_EOL); 103 /* 104 * XXX the "20" above could be dynamic, thereby eliminating 105 * one more instance of the "number to vfs" mapping problem, 106 * but "20" is the order as taken from sys/mount.h 107 */ 108 } 109 110 static int 111 ntfs_mountroot() 112 { 113 struct mount *mp; 114 struct lwp *l = curlwp; /* XXX */ 115 int error; 116 struct ntfs_args args; 117 118 if (device_class(root_device) != DV_DISK) 119 return (ENODEV); 120 121 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 122 vrele(rootvp); 123 return (error); 124 } 125 126 args.flag = 0; 127 args.uid = 0; 128 args.gid = 0; 129 args.mode = 0777; 130 131 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 132 vfs_unbusy(mp, false, NULL); 133 vfs_destroy(mp, false); 134 return (error); 135 } 136 137 mutex_enter(&mountlist_lock); 138 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 139 mp->mnt_iflag |= IMNT_ONLIST; 140 mutex_exit(&mountlist_lock); 141 (void)ntfs_statvfs(mp, &mp->mnt_stat); 142 vfs_unbusy(mp, false, NULL); 143 return (0); 144 } 145 146 static void 147 ntfs_init() 148 { 149 150 malloc_type_attach(M_NTFSMNT); 151 malloc_type_attach(M_NTFSNTNODE); 152 malloc_type_attach(M_NTFSFNODE); 153 malloc_type_attach(M_NTFSDIR); 154 malloc_type_attach(M_NTFSNTHASH); 155 malloc_type_attach(M_NTFSNTVATTR); 156 malloc_type_attach(M_NTFSRDATA); 157 malloc_type_attach(M_NTFSDECOMP); 158 malloc_type_attach(M_NTFSRUN); 159 ntfs_nthashinit(); 160 ntfs_toupper_init(); 161 } 162 163 static void 164 ntfs_reinit() 165 { 166 ntfs_nthashreinit(); 167 } 168 169 static void 170 ntfs_done() 171 { 172 ntfs_nthashdone(); 173 malloc_type_detach(M_NTFSMNT); 174 malloc_type_detach(M_NTFSNTNODE); 175 malloc_type_detach(M_NTFSFNODE); 176 malloc_type_detach(M_NTFSDIR); 177 malloc_type_detach(M_NTFSNTHASH); 178 malloc_type_detach(M_NTFSNTVATTR); 179 malloc_type_detach(M_NTFSRDATA); 180 malloc_type_detach(M_NTFSDECOMP); 181 malloc_type_detach(M_NTFSRUN); 182 } 183 184 static int 185 ntfs_mount ( 186 struct mount *mp, 187 const char *path, 188 void *data, 189 size_t *data_len) 190 { 191 struct nameidata nd; 192 struct lwp *l = curlwp; 193 struct nameidata *ndp = &nd; 194 int err = 0, flags; 195 struct vnode *devvp; 196 struct ntfs_args *args = data; 197 198 if (*data_len < sizeof *args) 199 return EINVAL; 200 201 if (mp->mnt_flag & MNT_GETARGS) { 202 struct ntfsmount *ntmp = VFSTONTFS(mp); 203 if (ntmp == NULL) 204 return EIO; 205 args->fspec = NULL; 206 args->uid = ntmp->ntm_uid; 207 args->gid = ntmp->ntm_gid; 208 args->mode = ntmp->ntm_mode; 209 args->flag = ntmp->ntm_flag; 210 *data_len = sizeof *args; 211 return 0; 212 } 213 /* 214 *** 215 * Mounting non-root file system or updating a file system 216 *** 217 */ 218 219 /* 220 * If updating, check whether changing from read-only to 221 * read/write; if there is no device name, that's all we do. 222 */ 223 if (mp->mnt_flag & MNT_UPDATE) { 224 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 225 return (EINVAL); 226 } 227 228 /* 229 * Not an update, or updating the name: look up the name 230 * and verify that it refers to a sensible block device. 231 */ 232 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 233 err = namei(ndp); 234 if (err) { 235 /* can't get devvp!*/ 236 return (err); 237 } 238 239 devvp = ndp->ni_vp; 240 241 if (devvp->v_type != VBLK) { 242 err = ENOTBLK; 243 goto fail; 244 } 245 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 246 err = ENXIO; 247 goto fail; 248 } 249 if (mp->mnt_flag & MNT_UPDATE) { 250 #if 0 251 /* 252 ******************** 253 * UPDATE 254 ******************** 255 */ 256 257 if (devvp != ntmp->um_devvp) { 258 err = EINVAL; /* needs translation */ 259 goto fail; 260 } 261 262 /* 263 * Update device name only on success 264 */ 265 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 266 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 267 if (err) 268 goto fail; 269 270 vrele(devvp); 271 #endif 272 } else { 273 /* 274 ******************** 275 * NEW MOUNT 276 ******************** 277 */ 278 279 /* 280 * Since this is a new mount, we want the names for 281 * the device and the mount point copied in. If an 282 * error occurs, the mountpoint is discarded by the 283 * upper level code. 284 */ 285 286 /* Save "last mounted on" info for mount point (NULL pad)*/ 287 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 288 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 289 if (err) 290 goto fail; 291 292 if (mp->mnt_flag & MNT_RDONLY) 293 flags = FREAD; 294 else 295 flags = FREAD|FWRITE; 296 err = VOP_OPEN(devvp, flags, FSCRED); 297 if (err) 298 goto fail; 299 err = ntfs_mountfs(devvp, mp, args, l); 300 if (err) { 301 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 302 (void)VOP_CLOSE(devvp, flags, NOCRED); 303 VOP_UNLOCK(devvp, 0); 304 goto fail; 305 } 306 } 307 308 /* 309 * Initialize FS stat information in mount struct; uses both 310 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 311 * 312 * This code is common to root and non-root mounts 313 */ 314 (void)VFS_STATVFS(mp, &mp->mnt_stat); 315 return (err); 316 317 fail: 318 vrele(devvp); 319 return (err); 320 } 321 322 /* 323 * Common code for mount and mountroot 324 */ 325 int 326 ntfs_mountfs(devvp, mp, argsp, l) 327 struct vnode *devvp; 328 struct mount *mp; 329 struct ntfs_args *argsp; 330 struct lwp *l; 331 { 332 struct buf *bp; 333 struct ntfsmount *ntmp; 334 dev_t dev = devvp->v_rdev; 335 int error, ronly, i; 336 struct vnode *vp; 337 338 ntmp = NULL; 339 340 /* 341 * Flush out any old buffers remaining from a previous use. 342 */ 343 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 344 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 345 VOP_UNLOCK(devvp, 0); 346 if (error) 347 return (error); 348 349 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 350 351 bp = NULL; 352 353 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 354 if (error) 355 goto out; 356 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 357 bzero( ntmp, sizeof *ntmp ); 358 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 359 brelse( bp , 0 ); 360 bp = NULL; 361 362 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 363 error = EINVAL; 364 dprintf(("ntfs_mountfs: invalid boot block\n")); 365 goto out; 366 } 367 368 { 369 int8_t cpr = ntmp->ntm_mftrecsz; 370 if( cpr > 0 ) 371 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 372 else 373 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 374 } 375 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 376 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 377 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 378 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 379 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 380 381 ntmp->ntm_mountp = mp; 382 ntmp->ntm_dev = dev; 383 ntmp->ntm_devvp = devvp; 384 ntmp->ntm_uid = argsp->uid; 385 ntmp->ntm_gid = argsp->gid; 386 ntmp->ntm_mode = argsp->mode; 387 ntmp->ntm_flag = argsp->flag; 388 mp->mnt_data = ntmp; 389 390 /* set file name encode/decode hooks XXX utf-8 only for now */ 391 ntmp->ntm_wget = ntfs_utf8_wget; 392 ntmp->ntm_wput = ntfs_utf8_wput; 393 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 394 395 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 396 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 397 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 398 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 399 400 /* 401 * We read in some system nodes to do not allow 402 * reclaim them and to have everytime access to them. 403 */ 404 { 405 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 406 for (i=0; i<3; i++) { 407 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 408 if(error) 409 goto out1; 410 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 411 VREF(ntmp->ntm_sysvn[pi[i]]); 412 vput(ntmp->ntm_sysvn[pi[i]]); 413 } 414 } 415 416 /* read the Unicode lowercase --> uppercase translation table, 417 * if necessary */ 418 if ((error = ntfs_toupper_use(mp, ntmp))) 419 goto out1; 420 421 /* 422 * Scan $BitMap and count free clusters 423 */ 424 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 425 if(error) 426 goto out1; 427 428 /* 429 * Read and translate to internal format attribute 430 * definition file. 431 */ 432 { 433 int num,j; 434 struct attrdef ad; 435 436 /* Open $AttrDef */ 437 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 438 if(error) 439 goto out1; 440 441 /* Count valid entries */ 442 for(num=0;;num++) { 443 error = ntfs_readattr(ntmp, VTONT(vp), 444 NTFS_A_DATA, NULL, 445 num * sizeof(ad), sizeof(ad), 446 &ad, NULL); 447 if (error) 448 goto out1; 449 if (ad.ad_name[0] == 0) 450 break; 451 } 452 453 /* Alloc memory for attribute definitions */ 454 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 455 num * sizeof(struct ntvattrdef), 456 M_NTFSMNT, M_WAITOK); 457 458 ntmp->ntm_adnum = num; 459 460 /* Read them and translate */ 461 for(i=0;i<num;i++){ 462 error = ntfs_readattr(ntmp, VTONT(vp), 463 NTFS_A_DATA, NULL, 464 i * sizeof(ad), sizeof(ad), 465 &ad, NULL); 466 if (error) 467 goto out1; 468 j = 0; 469 do { 470 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 471 } while(ad.ad_name[j++]); 472 ntmp->ntm_ad[i].ad_namelen = j - 1; 473 ntmp->ntm_ad[i].ad_type = ad.ad_type; 474 } 475 476 vput(vp); 477 } 478 479 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 480 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 481 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 482 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 483 mp->mnt_flag |= MNT_LOCAL; 484 devvp->v_specmountpoint = mp; 485 return (0); 486 487 out1: 488 for(i=0;i<NTFS_SYSNODESNUM;i++) 489 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 490 491 if (vflush(mp,NULLVP,0)) { 492 dprintf(("ntfs_mountfs: vflush failed\n")); 493 } 494 out: 495 devvp->v_specmountpoint = NULL; 496 if (bp) 497 brelse(bp, 0); 498 499 if (error) { 500 if (ntmp) { 501 if (ntmp->ntm_ad) 502 free(ntmp->ntm_ad, M_NTFSMNT); 503 free(ntmp, M_NTFSMNT); 504 } 505 } 506 507 return (error); 508 } 509 510 static int 511 ntfs_start ( 512 struct mount *mp, 513 int flags) 514 { 515 return (0); 516 } 517 518 static int 519 ntfs_unmount( 520 struct mount *mp, 521 int mntflags) 522 { 523 struct lwp *l = curlwp; 524 struct ntfsmount *ntmp; 525 int error, ronly = 0, flags, i; 526 527 dprintf(("ntfs_unmount: unmounting...\n")); 528 ntmp = VFSTONTFS(mp); 529 530 flags = 0; 531 if(mntflags & MNT_FORCE) 532 flags |= FORCECLOSE; 533 534 dprintf(("ntfs_unmount: vflushing...\n")); 535 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 536 if (error) { 537 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 538 return (error); 539 } 540 541 /* Check if only system vnodes are rest */ 542 for(i=0;i<NTFS_SYSNODESNUM;i++) 543 if((ntmp->ntm_sysvn[i]) && 544 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 545 546 /* Dereference all system vnodes */ 547 for(i=0;i<NTFS_SYSNODESNUM;i++) 548 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 549 550 /* vflush system vnodes */ 551 error = vflush(mp,NULLVP,flags); 552 if (error) { 553 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 554 } 555 556 /* Check if the type of device node isn't VBAD before 557 * touching v_specinfo. If the device vnode is revoked, the 558 * field is NULL and touching it causes null pointer derefercence. 559 */ 560 if (ntmp->ntm_devvp->v_type != VBAD) 561 ntmp->ntm_devvp->v_specmountpoint = NULL; 562 563 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 564 565 /* lock the device vnode before calling VOP_CLOSE() */ 566 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 567 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 568 NOCRED); 569 KASSERT(error == 0); 570 VOP_UNLOCK(ntmp->ntm_devvp, 0); 571 572 vrele(ntmp->ntm_devvp); 573 574 /* free the toupper table, if this has been last mounted ntfs volume */ 575 ntfs_toupper_unuse(); 576 577 dprintf(("ntfs_umount: freeing memory...\n")); 578 mp->mnt_data = NULL; 579 mp->mnt_flag &= ~MNT_LOCAL; 580 free(ntmp->ntm_ad, M_NTFSMNT); 581 FREE(ntmp, M_NTFSMNT); 582 return (0); 583 } 584 585 static int 586 ntfs_root( 587 struct mount *mp, 588 struct vnode **vpp) 589 { 590 struct vnode *nvp; 591 int error = 0; 592 593 dprintf(("ntfs_root(): sysvn: %p\n", 594 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 595 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 596 if(error) { 597 printf("ntfs_root: VFS_VGET failed: %d\n",error); 598 return (error); 599 } 600 601 *vpp = nvp; 602 return (0); 603 } 604 605 int 606 ntfs_calccfree( 607 struct ntfsmount *ntmp, 608 cn_t *cfreep) 609 { 610 struct vnode *vp; 611 u_int8_t *tmp; 612 int j, error; 613 cn_t cfree = 0; 614 size_t bmsize, i; 615 616 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 617 618 bmsize = VTOF(vp)->f_size; 619 620 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 621 622 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 623 0, bmsize, tmp, NULL); 624 if (error) 625 goto out; 626 627 for(i=0;i<bmsize;i++) 628 for(j=0;j<8;j++) 629 if(~tmp[i] & (1 << j)) cfree++; 630 *cfreep = cfree; 631 632 out: 633 free(tmp, M_TEMP); 634 return(error); 635 } 636 637 static int 638 ntfs_statvfs( 639 struct mount *mp, 640 struct statvfs *sbp) 641 { 642 struct ntfsmount *ntmp = VFSTONTFS(mp); 643 u_int64_t mftallocated; 644 645 dprintf(("ntfs_statvfs():\n")); 646 647 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 648 649 sbp->f_bsize = ntmp->ntm_bps; 650 sbp->f_frsize = sbp->f_bsize; /* XXX */ 651 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 652 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 653 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 654 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 655 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 656 sbp->f_ffree; 657 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 658 sbp->f_flag = mp->mnt_flag; 659 copy_statvfs_info(sbp, mp); 660 return (0); 661 } 662 663 static int 664 ntfs_sync ( 665 struct mount *mp, 666 int waitfor, 667 kauth_cred_t cred) 668 { 669 /*dprintf(("ntfs_sync():\n"));*/ 670 return (0); 671 } 672 673 /*ARGSUSED*/ 674 static int 675 ntfs_fhtovp( 676 struct mount *mp, 677 struct fid *fhp, 678 struct vnode **vpp) 679 { 680 struct ntfid ntfh; 681 int error; 682 683 if (fhp->fid_len != sizeof(struct ntfid)) 684 return EINVAL; 685 memcpy(&ntfh, fhp, sizeof(ntfh)); 686 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 687 (unsigned long long)ntfh.ntfid_ino)); 688 689 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 690 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 691 if (error != 0) { 692 *vpp = NULLVP; 693 return (error); 694 } 695 696 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 697 * with NTFS, we don't need to check anything else for now */ 698 return (0); 699 } 700 701 static int 702 ntfs_vptofh( 703 struct vnode *vp, 704 struct fid *fhp, 705 size_t *fh_size) 706 { 707 struct ntnode *ntp; 708 struct ntfid ntfh; 709 struct fnode *fn; 710 711 if (*fh_size < sizeof(struct ntfid)) { 712 *fh_size = sizeof(struct ntfid); 713 return E2BIG; 714 } 715 *fh_size = sizeof(struct ntfid); 716 717 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 718 vp)); 719 720 fn = VTOF(vp); 721 ntp = VTONT(vp); 722 memset(&ntfh, 0, sizeof(ntfh)); 723 ntfh.ntfid_len = sizeof(struct ntfid); 724 ntfh.ntfid_ino = ntp->i_number; 725 ntfh.ntfid_attr = fn->f_attrtype; 726 #ifdef notyet 727 ntfh.ntfid_gen = ntp->i_gen; 728 #endif 729 memcpy(fhp, &ntfh, sizeof(ntfh)); 730 return (0); 731 } 732 733 int 734 ntfs_vgetex( 735 struct mount *mp, 736 ino_t ino, 737 u_int32_t attrtype, 738 char *attrname, 739 u_long lkflags, 740 u_long flags, 741 struct vnode **vpp) 742 { 743 int error; 744 struct ntfsmount *ntmp; 745 struct ntnode *ip; 746 struct fnode *fp; 747 struct vnode *vp; 748 enum vtype f_type = VBAD; 749 750 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 751 " 0x%lx\n", (unsigned long long)ino, attrtype, 752 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 753 754 ntmp = VFSTONTFS(mp); 755 *vpp = NULL; 756 757 /* Get ntnode */ 758 error = ntfs_ntlookup(ntmp, ino, &ip); 759 if (error) { 760 printf("ntfs_vget: ntfs_ntget failed\n"); 761 return (error); 762 } 763 764 /* It may be not initialized fully, so force load it */ 765 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 766 error = ntfs_loadntnode(ntmp, ip); 767 if(error) { 768 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 769 " %llu\n", (unsigned long long)ip->i_number); 770 ntfs_ntput(ip); 771 return (error); 772 } 773 } 774 775 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 776 if (error) { 777 printf("ntfs_vget: ntfs_fget failed\n"); 778 ntfs_ntput(ip); 779 return (error); 780 } 781 782 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 783 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 784 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 785 f_type = VDIR; 786 } else if (flags & VG_EXT) { 787 f_type = VNON; 788 fp->f_size = fp->f_allocated = 0; 789 } else { 790 f_type = VREG; 791 792 error = ntfs_filesize(ntmp, fp, 793 &fp->f_size, &fp->f_allocated); 794 if (error) { 795 ntfs_ntput(ip); 796 return (error); 797 } 798 } 799 800 fp->f_flag |= FN_VALID; 801 } 802 803 /* 804 * We may be calling vget() now. To avoid potential deadlock, we need 805 * to release ntnode lock, since due to locking order vnode 806 * lock has to be acquired first. 807 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 808 * prematurely. 809 */ 810 ntfs_ntput(ip); 811 812 if (FTOV(fp)) { 813 /* vget() returns error if the vnode has been recycled */ 814 if (vget(FTOV(fp), lkflags) == 0) { 815 *vpp = FTOV(fp); 816 return (0); 817 } 818 } 819 820 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 821 if(error) { 822 ntfs_frele(fp); 823 ntfs_ntput(ip); 824 return (error); 825 } 826 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 827 (unsigned long long)ino)); 828 829 fp->f_vp = vp; 830 vp->v_data = fp; 831 if (f_type != VBAD) 832 vp->v_type = f_type; 833 genfs_node_init(vp, &ntfs_genfsops); 834 835 if (ino == NTFS_ROOTINO) 836 vp->v_vflag |= VV_ROOT; 837 838 if (lkflags & LK_TYPE_MASK) { 839 error = vn_lock(vp, lkflags); 840 if (error) { 841 vput(vp); 842 return (error); 843 } 844 } 845 846 uvm_vnp_setsize(vp, 0); /* XXX notused */ 847 VREF(ip->i_devvp); 848 *vpp = vp; 849 return (0); 850 } 851 852 static int 853 ntfs_vget( 854 struct mount *mp, 855 ino_t ino, 856 struct vnode **vpp) 857 { 858 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 859 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 860 } 861 862 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 863 864 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 865 &ntfs_vnodeop_opv_desc, 866 NULL, 867 }; 868 869 struct vfsops ntfs_vfsops = { 870 MOUNT_NTFS, 871 sizeof (struct ntfs_args), 872 ntfs_mount, 873 ntfs_start, 874 ntfs_unmount, 875 ntfs_root, 876 (void *)eopnotsupp, /* vfs_quotactl */ 877 ntfs_statvfs, 878 ntfs_sync, 879 ntfs_vget, 880 ntfs_fhtovp, 881 ntfs_vptofh, 882 ntfs_init, 883 ntfs_reinit, 884 ntfs_done, 885 ntfs_mountroot, 886 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 887 vfs_stdextattrctl, 888 (void *)eopnotsupp, /* vfs_suspendctl */ 889 genfs_renamelock_enter, 890 genfs_renamelock_exit, 891 (void *)eopnotsupp, 892 ntfs_vnodeopv_descs, 893 0, 894 { NULL, NULL }, 895 }; 896 VFS_ATTACH(ntfs_vfsops); 897
Indexes created Mon Sep 22 10:09:38 GMT 2025