ntfs_vfsops.c revision 1.68
1 /* $NetBSD: ntfs_vfsops.c,v 1.68 2008/05/05 17:11:16 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 1.68 2008/05/05 17:11:16 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_NTFSNTVATTR); 155 malloc_type_attach(M_NTFSRDATA); 156 malloc_type_attach(M_NTFSDECOMP); 157 malloc_type_attach(M_NTFSRUN); 158 ntfs_nthashinit(); 159 ntfs_toupper_init(); 160 } 161 162 static void 163 ntfs_reinit() 164 { 165 ntfs_nthashreinit(); 166 } 167 168 static void 169 ntfs_done() 170 { 171 ntfs_nthashdone(); 172 malloc_type_detach(M_NTFSMNT); 173 malloc_type_detach(M_NTFSNTNODE); 174 malloc_type_detach(M_NTFSFNODE); 175 malloc_type_detach(M_NTFSDIR); 176 malloc_type_detach(M_NTFSNTVATTR); 177 malloc_type_detach(M_NTFSRDATA); 178 malloc_type_detach(M_NTFSDECOMP); 179 malloc_type_detach(M_NTFSRUN); 180 } 181 182 static int 183 ntfs_mount ( 184 struct mount *mp, 185 const char *path, 186 void *data, 187 size_t *data_len) 188 { 189 struct nameidata nd; 190 struct lwp *l = curlwp; 191 struct nameidata *ndp = &nd; 192 int err = 0, flags; 193 struct vnode *devvp; 194 struct ntfs_args *args = data; 195 196 if (*data_len < sizeof *args) 197 return EINVAL; 198 199 if (mp->mnt_flag & MNT_GETARGS) { 200 struct ntfsmount *ntmp = VFSTONTFS(mp); 201 if (ntmp == NULL) 202 return EIO; 203 args->fspec = NULL; 204 args->uid = ntmp->ntm_uid; 205 args->gid = ntmp->ntm_gid; 206 args->mode = ntmp->ntm_mode; 207 args->flag = ntmp->ntm_flag; 208 *data_len = sizeof *args; 209 return 0; 210 } 211 /* 212 *** 213 * Mounting non-root file system or updating a file system 214 *** 215 */ 216 217 /* 218 * If updating, check whether changing from read-only to 219 * read/write; if there is no device name, that's all we do. 220 */ 221 if (mp->mnt_flag & MNT_UPDATE) { 222 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 223 return (EINVAL); 224 } 225 226 /* 227 * Not an update, or updating the name: look up the name 228 * and verify that it refers to a sensible block device. 229 */ 230 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 231 err = namei(ndp); 232 if (err) { 233 /* can't get devvp!*/ 234 return (err); 235 } 236 237 devvp = ndp->ni_vp; 238 239 if (devvp->v_type != VBLK) { 240 err = ENOTBLK; 241 goto fail; 242 } 243 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 244 err = ENXIO; 245 goto fail; 246 } 247 if (mp->mnt_flag & MNT_UPDATE) { 248 #if 0 249 /* 250 ******************** 251 * UPDATE 252 ******************** 253 */ 254 255 if (devvp != ntmp->um_devvp) { 256 err = EINVAL; /* needs translation */ 257 goto fail; 258 } 259 260 /* 261 * Update device name only on success 262 */ 263 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 264 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 265 if (err) 266 goto fail; 267 268 vrele(devvp); 269 #endif 270 } else { 271 /* 272 ******************** 273 * NEW MOUNT 274 ******************** 275 */ 276 277 /* 278 * Since this is a new mount, we want the names for 279 * the device and the mount point copied in. If an 280 * error occurs, the mountpoint is discarded by the 281 * upper level code. 282 */ 283 284 /* Save "last mounted on" info for mount point (NULL pad)*/ 285 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 286 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 287 if (err) 288 goto fail; 289 290 if (mp->mnt_flag & MNT_RDONLY) 291 flags = FREAD; 292 else 293 flags = FREAD|FWRITE; 294 err = VOP_OPEN(devvp, flags, FSCRED); 295 if (err) 296 goto fail; 297 err = ntfs_mountfs(devvp, mp, args, l); 298 if (err) { 299 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 300 (void)VOP_CLOSE(devvp, flags, NOCRED); 301 VOP_UNLOCK(devvp, 0); 302 goto fail; 303 } 304 } 305 306 /* 307 * Initialize FS stat information in mount struct; uses both 308 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 309 * 310 * This code is common to root and non-root mounts 311 */ 312 (void)VFS_STATVFS(mp, &mp->mnt_stat); 313 return (err); 314 315 fail: 316 vrele(devvp); 317 return (err); 318 } 319 320 /* 321 * Common code for mount and mountroot 322 */ 323 int 324 ntfs_mountfs(devvp, mp, argsp, l) 325 struct vnode *devvp; 326 struct mount *mp; 327 struct ntfs_args *argsp; 328 struct lwp *l; 329 { 330 struct buf *bp; 331 struct ntfsmount *ntmp; 332 dev_t dev = devvp->v_rdev; 333 int error, ronly, i; 334 struct vnode *vp; 335 336 ntmp = NULL; 337 338 /* 339 * Flush out any old buffers remaining from a previous use. 340 */ 341 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 342 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 343 VOP_UNLOCK(devvp, 0); 344 if (error) 345 return (error); 346 347 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 348 349 bp = NULL; 350 351 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 352 if (error) 353 goto out; 354 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 355 bzero( ntmp, sizeof *ntmp ); 356 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 357 brelse( bp , 0 ); 358 bp = NULL; 359 360 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 361 error = EINVAL; 362 dprintf(("ntfs_mountfs: invalid boot block\n")); 363 goto out; 364 } 365 366 { 367 int8_t cpr = ntmp->ntm_mftrecsz; 368 if( cpr > 0 ) 369 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 370 else 371 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 372 } 373 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 374 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 375 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 376 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 377 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 378 379 ntmp->ntm_mountp = mp; 380 ntmp->ntm_dev = dev; 381 ntmp->ntm_devvp = devvp; 382 ntmp->ntm_uid = argsp->uid; 383 ntmp->ntm_gid = argsp->gid; 384 ntmp->ntm_mode = argsp->mode; 385 ntmp->ntm_flag = argsp->flag; 386 mp->mnt_data = ntmp; 387 388 /* set file name encode/decode hooks XXX utf-8 only for now */ 389 ntmp->ntm_wget = ntfs_utf8_wget; 390 ntmp->ntm_wput = ntfs_utf8_wput; 391 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 392 393 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 394 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 395 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 396 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 397 398 /* 399 * We read in some system nodes to do not allow 400 * reclaim them and to have everytime access to them. 401 */ 402 { 403 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 404 for (i=0; i<3; i++) { 405 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 406 if(error) 407 goto out1; 408 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 409 VREF(ntmp->ntm_sysvn[pi[i]]); 410 vput(ntmp->ntm_sysvn[pi[i]]); 411 } 412 } 413 414 /* read the Unicode lowercase --> uppercase translation table, 415 * if necessary */ 416 if ((error = ntfs_toupper_use(mp, ntmp))) 417 goto out1; 418 419 /* 420 * Scan $BitMap and count free clusters 421 */ 422 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 423 if(error) 424 goto out1; 425 426 /* 427 * Read and translate to internal format attribute 428 * definition file. 429 */ 430 { 431 int num,j; 432 struct attrdef ad; 433 434 /* Open $AttrDef */ 435 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 436 if(error) 437 goto out1; 438 439 /* Count valid entries */ 440 for(num=0;;num++) { 441 error = ntfs_readattr(ntmp, VTONT(vp), 442 NTFS_A_DATA, NULL, 443 num * sizeof(ad), sizeof(ad), 444 &ad, NULL); 445 if (error) 446 goto out1; 447 if (ad.ad_name[0] == 0) 448 break; 449 } 450 451 /* Alloc memory for attribute definitions */ 452 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 453 num * sizeof(struct ntvattrdef), 454 M_NTFSMNT, M_WAITOK); 455 456 ntmp->ntm_adnum = num; 457 458 /* Read them and translate */ 459 for(i=0;i<num;i++){ 460 error = ntfs_readattr(ntmp, VTONT(vp), 461 NTFS_A_DATA, NULL, 462 i * sizeof(ad), sizeof(ad), 463 &ad, NULL); 464 if (error) 465 goto out1; 466 j = 0; 467 do { 468 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 469 } while(ad.ad_name[j++]); 470 ntmp->ntm_ad[i].ad_namelen = j - 1; 471 ntmp->ntm_ad[i].ad_type = ad.ad_type; 472 } 473 474 vput(vp); 475 } 476 477 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 478 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 479 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 480 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 481 mp->mnt_flag |= MNT_LOCAL; 482 devvp->v_specmountpoint = mp; 483 return (0); 484 485 out1: 486 for(i=0;i<NTFS_SYSNODESNUM;i++) 487 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 488 489 if (vflush(mp,NULLVP,0)) { 490 dprintf(("ntfs_mountfs: vflush failed\n")); 491 } 492 out: 493 devvp->v_specmountpoint = NULL; 494 if (bp) 495 brelse(bp, 0); 496 497 if (error) { 498 if (ntmp) { 499 if (ntmp->ntm_ad) 500 free(ntmp->ntm_ad, M_NTFSMNT); 501 free(ntmp, M_NTFSMNT); 502 } 503 } 504 505 return (error); 506 } 507 508 static int 509 ntfs_start ( 510 struct mount *mp, 511 int flags) 512 { 513 return (0); 514 } 515 516 static int 517 ntfs_unmount( 518 struct mount *mp, 519 int mntflags) 520 { 521 struct lwp *l = curlwp; 522 struct ntfsmount *ntmp; 523 int error, ronly = 0, flags, i; 524 525 dprintf(("ntfs_unmount: unmounting...\n")); 526 ntmp = VFSTONTFS(mp); 527 528 flags = 0; 529 if(mntflags & MNT_FORCE) 530 flags |= FORCECLOSE; 531 532 dprintf(("ntfs_unmount: vflushing...\n")); 533 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 534 if (error) { 535 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 536 return (error); 537 } 538 539 /* Check if only system vnodes are rest */ 540 for(i=0;i<NTFS_SYSNODESNUM;i++) 541 if((ntmp->ntm_sysvn[i]) && 542 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 543 544 /* Dereference all system vnodes */ 545 for(i=0;i<NTFS_SYSNODESNUM;i++) 546 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 547 548 /* vflush system vnodes */ 549 error = vflush(mp,NULLVP,flags); 550 if (error) { 551 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 552 } 553 554 /* Check if the type of device node isn't VBAD before 555 * touching v_specinfo. If the device vnode is revoked, the 556 * field is NULL and touching it causes null pointer derefercence. 557 */ 558 if (ntmp->ntm_devvp->v_type != VBAD) 559 ntmp->ntm_devvp->v_specmountpoint = NULL; 560 561 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 562 563 /* lock the device vnode before calling VOP_CLOSE() */ 564 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 565 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 566 NOCRED); 567 KASSERT(error == 0); 568 VOP_UNLOCK(ntmp->ntm_devvp, 0); 569 570 vrele(ntmp->ntm_devvp); 571 572 /* free the toupper table, if this has been last mounted ntfs volume */ 573 ntfs_toupper_unuse(); 574 575 dprintf(("ntfs_umount: freeing memory...\n")); 576 mp->mnt_data = NULL; 577 mp->mnt_flag &= ~MNT_LOCAL; 578 free(ntmp->ntm_ad, M_NTFSMNT); 579 FREE(ntmp, M_NTFSMNT); 580 return (0); 581 } 582 583 static int 584 ntfs_root( 585 struct mount *mp, 586 struct vnode **vpp) 587 { 588 struct vnode *nvp; 589 int error = 0; 590 591 dprintf(("ntfs_root(): sysvn: %p\n", 592 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 593 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 594 if(error) { 595 printf("ntfs_root: VFS_VGET failed: %d\n",error); 596 return (error); 597 } 598 599 *vpp = nvp; 600 return (0); 601 } 602 603 int 604 ntfs_calccfree( 605 struct ntfsmount *ntmp, 606 cn_t *cfreep) 607 { 608 struct vnode *vp; 609 u_int8_t *tmp; 610 int j, error; 611 cn_t cfree = 0; 612 size_t bmsize, i; 613 614 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 615 616 bmsize = VTOF(vp)->f_size; 617 618 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 619 620 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 621 0, bmsize, tmp, NULL); 622 if (error) 623 goto out; 624 625 for(i=0;i<bmsize;i++) 626 for(j=0;j<8;j++) 627 if(~tmp[i] & (1 << j)) cfree++; 628 *cfreep = cfree; 629 630 out: 631 free(tmp, M_TEMP); 632 return(error); 633 } 634 635 static int 636 ntfs_statvfs( 637 struct mount *mp, 638 struct statvfs *sbp) 639 { 640 struct ntfsmount *ntmp = VFSTONTFS(mp); 641 u_int64_t mftallocated; 642 643 dprintf(("ntfs_statvfs():\n")); 644 645 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 646 647 sbp->f_bsize = ntmp->ntm_bps; 648 sbp->f_frsize = sbp->f_bsize; /* XXX */ 649 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 650 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 651 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 652 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 653 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 654 sbp->f_ffree; 655 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 656 sbp->f_flag = mp->mnt_flag; 657 copy_statvfs_info(sbp, mp); 658 return (0); 659 } 660 661 static int 662 ntfs_sync ( 663 struct mount *mp, 664 int waitfor, 665 kauth_cred_t cred) 666 { 667 /*dprintf(("ntfs_sync():\n"));*/ 668 return (0); 669 } 670 671 /*ARGSUSED*/ 672 static int 673 ntfs_fhtovp( 674 struct mount *mp, 675 struct fid *fhp, 676 struct vnode **vpp) 677 { 678 struct ntfid ntfh; 679 int error; 680 681 if (fhp->fid_len != sizeof(struct ntfid)) 682 return EINVAL; 683 memcpy(&ntfh, fhp, sizeof(ntfh)); 684 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 685 (unsigned long long)ntfh.ntfid_ino)); 686 687 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 688 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 689 if (error != 0) { 690 *vpp = NULLVP; 691 return (error); 692 } 693 694 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 695 * with NTFS, we don't need to check anything else for now */ 696 return (0); 697 } 698 699 static int 700 ntfs_vptofh( 701 struct vnode *vp, 702 struct fid *fhp, 703 size_t *fh_size) 704 { 705 struct ntnode *ntp; 706 struct ntfid ntfh; 707 struct fnode *fn; 708 709 if (*fh_size < sizeof(struct ntfid)) { 710 *fh_size = sizeof(struct ntfid); 711 return E2BIG; 712 } 713 *fh_size = sizeof(struct ntfid); 714 715 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 716 vp)); 717 718 fn = VTOF(vp); 719 ntp = VTONT(vp); 720 memset(&ntfh, 0, sizeof(ntfh)); 721 ntfh.ntfid_len = sizeof(struct ntfid); 722 ntfh.ntfid_ino = ntp->i_number; 723 ntfh.ntfid_attr = fn->f_attrtype; 724 #ifdef notyet 725 ntfh.ntfid_gen = ntp->i_gen; 726 #endif 727 memcpy(fhp, &ntfh, sizeof(ntfh)); 728 return (0); 729 } 730 731 int 732 ntfs_vgetex( 733 struct mount *mp, 734 ino_t ino, 735 u_int32_t attrtype, 736 char *attrname, 737 u_long lkflags, 738 u_long flags, 739 struct vnode **vpp) 740 { 741 int error; 742 struct ntfsmount *ntmp; 743 struct ntnode *ip; 744 struct fnode *fp; 745 struct vnode *vp; 746 enum vtype f_type = VBAD; 747 748 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 749 " 0x%lx\n", (unsigned long long)ino, attrtype, 750 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 751 752 ntmp = VFSTONTFS(mp); 753 *vpp = NULL; 754 755 /* Get ntnode */ 756 error = ntfs_ntlookup(ntmp, ino, &ip); 757 if (error) { 758 printf("ntfs_vget: ntfs_ntget failed\n"); 759 return (error); 760 } 761 762 /* It may be not initialized fully, so force load it */ 763 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 764 error = ntfs_loadntnode(ntmp, ip); 765 if(error) { 766 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 767 " %llu\n", (unsigned long long)ip->i_number); 768 ntfs_ntput(ip); 769 return (error); 770 } 771 } 772 773 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 774 if (error) { 775 printf("ntfs_vget: ntfs_fget failed\n"); 776 ntfs_ntput(ip); 777 return (error); 778 } 779 780 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 781 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 782 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 783 f_type = VDIR; 784 } else if (flags & VG_EXT) { 785 f_type = VNON; 786 fp->f_size = fp->f_allocated = 0; 787 } else { 788 f_type = VREG; 789 790 error = ntfs_filesize(ntmp, fp, 791 &fp->f_size, &fp->f_allocated); 792 if (error) { 793 ntfs_ntput(ip); 794 return (error); 795 } 796 } 797 798 fp->f_flag |= FN_VALID; 799 } 800 801 /* 802 * We may be calling vget() now. To avoid potential deadlock, we need 803 * to release ntnode lock, since due to locking order vnode 804 * lock has to be acquired first. 805 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 806 * prematurely. 807 */ 808 ntfs_ntput(ip); 809 810 if (FTOV(fp)) { 811 /* vget() returns error if the vnode has been recycled */ 812 if (vget(FTOV(fp), lkflags) == 0) { 813 *vpp = FTOV(fp); 814 return (0); 815 } 816 } 817 818 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 819 if(error) { 820 ntfs_frele(fp); 821 ntfs_ntput(ip); 822 return (error); 823 } 824 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 825 (unsigned long long)ino)); 826 827 fp->f_vp = vp; 828 vp->v_data = fp; 829 if (f_type != VBAD) 830 vp->v_type = f_type; 831 genfs_node_init(vp, &ntfs_genfsops); 832 833 if (ino == NTFS_ROOTINO) 834 vp->v_vflag |= VV_ROOT; 835 836 if (lkflags & LK_TYPE_MASK) { 837 error = vn_lock(vp, lkflags); 838 if (error) { 839 vput(vp); 840 return (error); 841 } 842 } 843 844 uvm_vnp_setsize(vp, 0); /* XXX notused */ 845 VREF(ip->i_devvp); 846 *vpp = vp; 847 return (0); 848 } 849 850 static int 851 ntfs_vget( 852 struct mount *mp, 853 ino_t ino, 854 struct vnode **vpp) 855 { 856 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 857 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 858 } 859 860 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 861 862 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 863 &ntfs_vnodeop_opv_desc, 864 NULL, 865 }; 866 867 struct vfsops ntfs_vfsops = { 868 MOUNT_NTFS, 869 sizeof (struct ntfs_args), 870 ntfs_mount, 871 ntfs_start, 872 ntfs_unmount, 873 ntfs_root, 874 (void *)eopnotsupp, /* vfs_quotactl */ 875 ntfs_statvfs, 876 ntfs_sync, 877 ntfs_vget, 878 ntfs_fhtovp, 879 ntfs_vptofh, 880 ntfs_init, 881 ntfs_reinit, 882 ntfs_done, 883 ntfs_mountroot, 884 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 885 vfs_stdextattrctl, 886 (void *)eopnotsupp, /* vfs_suspendctl */ 887 genfs_renamelock_enter, 888 genfs_renamelock_exit, 889 (void *)eopnotsupp, 890 ntfs_vnodeopv_descs, 891 0, 892 { NULL, NULL }, 893 }; 894 VFS_ATTACH(ntfs_vfsops); 895
Indexes created Wed Oct 01 19:09:53 GMT 2025