ntfs_vfsops.c revision 1.69
1 /* $NetBSD: ntfs_vfsops.c,v 1.69 2008/05/06 18:43:44 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 1.69 2008/05/06 18:43:44 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); 134 return (error); 135 } 136 137 mutex_enter(&mountlist_lock); 138 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 139 mutex_exit(&mountlist_lock); 140 (void)ntfs_statvfs(mp, &mp->mnt_stat); 141 vfs_unbusy(mp, false, NULL); 142 return (0); 143 } 144 145 static void 146 ntfs_init() 147 { 148 149 malloc_type_attach(M_NTFSMNT); 150 malloc_type_attach(M_NTFSNTNODE); 151 malloc_type_attach(M_NTFSFNODE); 152 malloc_type_attach(M_NTFSDIR); 153 malloc_type_attach(M_NTFSNTVATTR); 154 malloc_type_attach(M_NTFSRDATA); 155 malloc_type_attach(M_NTFSDECOMP); 156 malloc_type_attach(M_NTFSRUN); 157 ntfs_nthashinit(); 158 ntfs_toupper_init(); 159 } 160 161 static void 162 ntfs_reinit() 163 { 164 ntfs_nthashreinit(); 165 } 166 167 static void 168 ntfs_done() 169 { 170 ntfs_nthashdone(); 171 malloc_type_detach(M_NTFSMNT); 172 malloc_type_detach(M_NTFSNTNODE); 173 malloc_type_detach(M_NTFSFNODE); 174 malloc_type_detach(M_NTFSDIR); 175 malloc_type_detach(M_NTFSNTVATTR); 176 malloc_type_detach(M_NTFSRDATA); 177 malloc_type_detach(M_NTFSDECOMP); 178 malloc_type_detach(M_NTFSRUN); 179 } 180 181 static int 182 ntfs_mount ( 183 struct mount *mp, 184 const char *path, 185 void *data, 186 size_t *data_len) 187 { 188 struct nameidata nd; 189 struct lwp *l = curlwp; 190 struct nameidata *ndp = &nd; 191 int err = 0, flags; 192 struct vnode *devvp; 193 struct ntfs_args *args = data; 194 195 if (*data_len < sizeof *args) 196 return EINVAL; 197 198 if (mp->mnt_flag & MNT_GETARGS) { 199 struct ntfsmount *ntmp = VFSTONTFS(mp); 200 if (ntmp == NULL) 201 return EIO; 202 args->fspec = NULL; 203 args->uid = ntmp->ntm_uid; 204 args->gid = ntmp->ntm_gid; 205 args->mode = ntmp->ntm_mode; 206 args->flag = ntmp->ntm_flag; 207 *data_len = sizeof *args; 208 return 0; 209 } 210 /* 211 *** 212 * Mounting non-root file system or updating a file system 213 *** 214 */ 215 216 /* 217 * If updating, check whether changing from read-only to 218 * read/write; if there is no device name, that's all we do. 219 */ 220 if (mp->mnt_flag & MNT_UPDATE) { 221 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 222 return (EINVAL); 223 } 224 225 /* 226 * Not an update, or updating the name: look up the name 227 * and verify that it refers to a sensible block device. 228 */ 229 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 230 err = namei(ndp); 231 if (err) { 232 /* can't get devvp!*/ 233 return (err); 234 } 235 236 devvp = ndp->ni_vp; 237 238 if (devvp->v_type != VBLK) { 239 err = ENOTBLK; 240 goto fail; 241 } 242 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 243 err = ENXIO; 244 goto fail; 245 } 246 if (mp->mnt_flag & MNT_UPDATE) { 247 #if 0 248 /* 249 ******************** 250 * UPDATE 251 ******************** 252 */ 253 254 if (devvp != ntmp->um_devvp) { 255 err = EINVAL; /* needs translation */ 256 goto fail; 257 } 258 259 /* 260 * Update device name only on success 261 */ 262 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 263 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 264 if (err) 265 goto fail; 266 267 vrele(devvp); 268 #endif 269 } else { 270 /* 271 ******************** 272 * NEW MOUNT 273 ******************** 274 */ 275 276 /* 277 * Since this is a new mount, we want the names for 278 * the device and the mount point copied in. If an 279 * error occurs, the mountpoint is discarded by the 280 * upper level code. 281 */ 282 283 /* Save "last mounted on" info for mount point (NULL pad)*/ 284 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 285 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 286 if (err) 287 goto fail; 288 289 if (mp->mnt_flag & MNT_RDONLY) 290 flags = FREAD; 291 else 292 flags = FREAD|FWRITE; 293 err = VOP_OPEN(devvp, flags, FSCRED); 294 if (err) 295 goto fail; 296 err = ntfs_mountfs(devvp, mp, args, l); 297 if (err) { 298 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 299 (void)VOP_CLOSE(devvp, flags, NOCRED); 300 VOP_UNLOCK(devvp, 0); 301 goto fail; 302 } 303 } 304 305 /* 306 * Initialize FS stat information in mount struct; uses both 307 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 308 * 309 * This code is common to root and non-root mounts 310 */ 311 (void)VFS_STATVFS(mp, &mp->mnt_stat); 312 return (err); 313 314 fail: 315 vrele(devvp); 316 return (err); 317 } 318 319 /* 320 * Common code for mount and mountroot 321 */ 322 int 323 ntfs_mountfs(devvp, mp, argsp, l) 324 struct vnode *devvp; 325 struct mount *mp; 326 struct ntfs_args *argsp; 327 struct lwp *l; 328 { 329 struct buf *bp; 330 struct ntfsmount *ntmp; 331 dev_t dev = devvp->v_rdev; 332 int error, ronly, i; 333 struct vnode *vp; 334 335 ntmp = NULL; 336 337 /* 338 * Flush out any old buffers remaining from a previous use. 339 */ 340 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 341 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 342 VOP_UNLOCK(devvp, 0); 343 if (error) 344 return (error); 345 346 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 347 348 bp = NULL; 349 350 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 351 if (error) 352 goto out; 353 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 354 bzero( ntmp, sizeof *ntmp ); 355 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 356 brelse( bp , 0 ); 357 bp = NULL; 358 359 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 360 error = EINVAL; 361 dprintf(("ntfs_mountfs: invalid boot block\n")); 362 goto out; 363 } 364 365 { 366 int8_t cpr = ntmp->ntm_mftrecsz; 367 if( cpr > 0 ) 368 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 369 else 370 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 371 } 372 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 373 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 374 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 375 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 376 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 377 378 ntmp->ntm_mountp = mp; 379 ntmp->ntm_dev = dev; 380 ntmp->ntm_devvp = devvp; 381 ntmp->ntm_uid = argsp->uid; 382 ntmp->ntm_gid = argsp->gid; 383 ntmp->ntm_mode = argsp->mode; 384 ntmp->ntm_flag = argsp->flag; 385 mp->mnt_data = ntmp; 386 387 /* set file name encode/decode hooks XXX utf-8 only for now */ 388 ntmp->ntm_wget = ntfs_utf8_wget; 389 ntmp->ntm_wput = ntfs_utf8_wput; 390 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 391 392 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 393 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 394 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 395 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 396 397 /* 398 * We read in some system nodes to do not allow 399 * reclaim them and to have everytime access to them. 400 */ 401 { 402 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 403 for (i=0; i<3; i++) { 404 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 405 if(error) 406 goto out1; 407 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 408 VREF(ntmp->ntm_sysvn[pi[i]]); 409 vput(ntmp->ntm_sysvn[pi[i]]); 410 } 411 } 412 413 /* read the Unicode lowercase --> uppercase translation table, 414 * if necessary */ 415 if ((error = ntfs_toupper_use(mp, ntmp))) 416 goto out1; 417 418 /* 419 * Scan $BitMap and count free clusters 420 */ 421 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 422 if(error) 423 goto out1; 424 425 /* 426 * Read and translate to internal format attribute 427 * definition file. 428 */ 429 { 430 int num,j; 431 struct attrdef ad; 432 433 /* Open $AttrDef */ 434 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 435 if(error) 436 goto out1; 437 438 /* Count valid entries */ 439 for(num=0;;num++) { 440 error = ntfs_readattr(ntmp, VTONT(vp), 441 NTFS_A_DATA, NULL, 442 num * sizeof(ad), sizeof(ad), 443 &ad, NULL); 444 if (error) 445 goto out1; 446 if (ad.ad_name[0] == 0) 447 break; 448 } 449 450 /* Alloc memory for attribute definitions */ 451 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 452 num * sizeof(struct ntvattrdef), 453 M_NTFSMNT, M_WAITOK); 454 455 ntmp->ntm_adnum = num; 456 457 /* Read them and translate */ 458 for(i=0;i<num;i++){ 459 error = ntfs_readattr(ntmp, VTONT(vp), 460 NTFS_A_DATA, NULL, 461 i * sizeof(ad), sizeof(ad), 462 &ad, NULL); 463 if (error) 464 goto out1; 465 j = 0; 466 do { 467 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 468 } while(ad.ad_name[j++]); 469 ntmp->ntm_ad[i].ad_namelen = j - 1; 470 ntmp->ntm_ad[i].ad_type = ad.ad_type; 471 } 472 473 vput(vp); 474 } 475 476 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 477 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 478 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 479 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 480 mp->mnt_flag |= MNT_LOCAL; 481 devvp->v_specmountpoint = mp; 482 return (0); 483 484 out1: 485 for(i=0;i<NTFS_SYSNODESNUM;i++) 486 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 487 488 if (vflush(mp,NULLVP,0)) { 489 dprintf(("ntfs_mountfs: vflush failed\n")); 490 } 491 out: 492 devvp->v_specmountpoint = NULL; 493 if (bp) 494 brelse(bp, 0); 495 496 if (error) { 497 if (ntmp) { 498 if (ntmp->ntm_ad) 499 free(ntmp->ntm_ad, M_NTFSMNT); 500 free(ntmp, M_NTFSMNT); 501 } 502 } 503 504 return (error); 505 } 506 507 static int 508 ntfs_start ( 509 struct mount *mp, 510 int flags) 511 { 512 return (0); 513 } 514 515 static int 516 ntfs_unmount( 517 struct mount *mp, 518 int mntflags) 519 { 520 struct lwp *l = curlwp; 521 struct ntfsmount *ntmp; 522 int error, ronly = 0, flags, i; 523 524 dprintf(("ntfs_unmount: unmounting...\n")); 525 ntmp = VFSTONTFS(mp); 526 527 flags = 0; 528 if(mntflags & MNT_FORCE) 529 flags |= FORCECLOSE; 530 531 dprintf(("ntfs_unmount: vflushing...\n")); 532 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 533 if (error) { 534 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 535 return (error); 536 } 537 538 /* Check if only system vnodes are rest */ 539 for(i=0;i<NTFS_SYSNODESNUM;i++) 540 if((ntmp->ntm_sysvn[i]) && 541 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 542 543 /* Dereference all system vnodes */ 544 for(i=0;i<NTFS_SYSNODESNUM;i++) 545 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 546 547 /* vflush system vnodes */ 548 error = vflush(mp,NULLVP,flags); 549 if (error) { 550 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 551 } 552 553 /* Check if the type of device node isn't VBAD before 554 * touching v_specinfo. If the device vnode is revoked, the 555 * field is NULL and touching it causes null pointer derefercence. 556 */ 557 if (ntmp->ntm_devvp->v_type != VBAD) 558 ntmp->ntm_devvp->v_specmountpoint = NULL; 559 560 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 561 562 /* lock the device vnode before calling VOP_CLOSE() */ 563 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 564 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 565 NOCRED); 566 KASSERT(error == 0); 567 VOP_UNLOCK(ntmp->ntm_devvp, 0); 568 569 vrele(ntmp->ntm_devvp); 570 571 /* free the toupper table, if this has been last mounted ntfs volume */ 572 ntfs_toupper_unuse(); 573 574 dprintf(("ntfs_umount: freeing memory...\n")); 575 mp->mnt_data = NULL; 576 mp->mnt_flag &= ~MNT_LOCAL; 577 free(ntmp->ntm_ad, M_NTFSMNT); 578 FREE(ntmp, M_NTFSMNT); 579 return (0); 580 } 581 582 static int 583 ntfs_root( 584 struct mount *mp, 585 struct vnode **vpp) 586 { 587 struct vnode *nvp; 588 int error = 0; 589 590 dprintf(("ntfs_root(): sysvn: %p\n", 591 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 592 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 593 if(error) { 594 printf("ntfs_root: VFS_VGET failed: %d\n",error); 595 return (error); 596 } 597 598 *vpp = nvp; 599 return (0); 600 } 601 602 int 603 ntfs_calccfree( 604 struct ntfsmount *ntmp, 605 cn_t *cfreep) 606 { 607 struct vnode *vp; 608 u_int8_t *tmp; 609 int j, error; 610 cn_t cfree = 0; 611 size_t bmsize, i; 612 613 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 614 615 bmsize = VTOF(vp)->f_size; 616 617 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 618 619 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 620 0, bmsize, tmp, NULL); 621 if (error) 622 goto out; 623 624 for(i=0;i<bmsize;i++) 625 for(j=0;j<8;j++) 626 if(~tmp[i] & (1 << j)) cfree++; 627 *cfreep = cfree; 628 629 out: 630 free(tmp, M_TEMP); 631 return(error); 632 } 633 634 static int 635 ntfs_statvfs( 636 struct mount *mp, 637 struct statvfs *sbp) 638 { 639 struct ntfsmount *ntmp = VFSTONTFS(mp); 640 u_int64_t mftallocated; 641 642 dprintf(("ntfs_statvfs():\n")); 643 644 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 645 646 sbp->f_bsize = ntmp->ntm_bps; 647 sbp->f_frsize = sbp->f_bsize; /* XXX */ 648 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 649 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 650 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 651 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 652 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 653 sbp->f_ffree; 654 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 655 sbp->f_flag = mp->mnt_flag; 656 copy_statvfs_info(sbp, mp); 657 return (0); 658 } 659 660 static int 661 ntfs_sync ( 662 struct mount *mp, 663 int waitfor, 664 kauth_cred_t cred) 665 { 666 /*dprintf(("ntfs_sync():\n"));*/ 667 return (0); 668 } 669 670 /*ARGSUSED*/ 671 static int 672 ntfs_fhtovp( 673 struct mount *mp, 674 struct fid *fhp, 675 struct vnode **vpp) 676 { 677 struct ntfid ntfh; 678 int error; 679 680 if (fhp->fid_len != sizeof(struct ntfid)) 681 return EINVAL; 682 memcpy(&ntfh, fhp, sizeof(ntfh)); 683 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 684 (unsigned long long)ntfh.ntfid_ino)); 685 686 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 687 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 688 if (error != 0) { 689 *vpp = NULLVP; 690 return (error); 691 } 692 693 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 694 * with NTFS, we don't need to check anything else for now */ 695 return (0); 696 } 697 698 static int 699 ntfs_vptofh( 700 struct vnode *vp, 701 struct fid *fhp, 702 size_t *fh_size) 703 { 704 struct ntnode *ntp; 705 struct ntfid ntfh; 706 struct fnode *fn; 707 708 if (*fh_size < sizeof(struct ntfid)) { 709 *fh_size = sizeof(struct ntfid); 710 return E2BIG; 711 } 712 *fh_size = sizeof(struct ntfid); 713 714 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 715 vp)); 716 717 fn = VTOF(vp); 718 ntp = VTONT(vp); 719 memset(&ntfh, 0, sizeof(ntfh)); 720 ntfh.ntfid_len = sizeof(struct ntfid); 721 ntfh.ntfid_ino = ntp->i_number; 722 ntfh.ntfid_attr = fn->f_attrtype; 723 #ifdef notyet 724 ntfh.ntfid_gen = ntp->i_gen; 725 #endif 726 memcpy(fhp, &ntfh, sizeof(ntfh)); 727 return (0); 728 } 729 730 int 731 ntfs_vgetex( 732 struct mount *mp, 733 ino_t ino, 734 u_int32_t attrtype, 735 char *attrname, 736 u_long lkflags, 737 u_long flags, 738 struct vnode **vpp) 739 { 740 int error; 741 struct ntfsmount *ntmp; 742 struct ntnode *ip; 743 struct fnode *fp; 744 struct vnode *vp; 745 enum vtype f_type = VBAD; 746 747 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 748 " 0x%lx\n", (unsigned long long)ino, attrtype, 749 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 750 751 ntmp = VFSTONTFS(mp); 752 *vpp = NULL; 753 754 /* Get ntnode */ 755 error = ntfs_ntlookup(ntmp, ino, &ip); 756 if (error) { 757 printf("ntfs_vget: ntfs_ntget failed\n"); 758 return (error); 759 } 760 761 /* It may be not initialized fully, so force load it */ 762 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 763 error = ntfs_loadntnode(ntmp, ip); 764 if(error) { 765 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 766 " %llu\n", (unsigned long long)ip->i_number); 767 ntfs_ntput(ip); 768 return (error); 769 } 770 } 771 772 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 773 if (error) { 774 printf("ntfs_vget: ntfs_fget failed\n"); 775 ntfs_ntput(ip); 776 return (error); 777 } 778 779 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 780 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 781 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 782 f_type = VDIR; 783 } else if (flags & VG_EXT) { 784 f_type = VNON; 785 fp->f_size = fp->f_allocated = 0; 786 } else { 787 f_type = VREG; 788 789 error = ntfs_filesize(ntmp, fp, 790 &fp->f_size, &fp->f_allocated); 791 if (error) { 792 ntfs_ntput(ip); 793 return (error); 794 } 795 } 796 797 fp->f_flag |= FN_VALID; 798 } 799 800 /* 801 * We may be calling vget() now. To avoid potential deadlock, we need 802 * to release ntnode lock, since due to locking order vnode 803 * lock has to be acquired first. 804 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 805 * prematurely. 806 */ 807 ntfs_ntput(ip); 808 809 if (FTOV(fp)) { 810 /* vget() returns error if the vnode has been recycled */ 811 if (vget(FTOV(fp), lkflags) == 0) { 812 *vpp = FTOV(fp); 813 return (0); 814 } 815 } 816 817 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 818 if(error) { 819 ntfs_frele(fp); 820 ntfs_ntput(ip); 821 return (error); 822 } 823 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 824 (unsigned long long)ino)); 825 826 fp->f_vp = vp; 827 vp->v_data = fp; 828 if (f_type != VBAD) 829 vp->v_type = f_type; 830 genfs_node_init(vp, &ntfs_genfsops); 831 832 if (ino == NTFS_ROOTINO) 833 vp->v_vflag |= VV_ROOT; 834 835 if (lkflags & LK_TYPE_MASK) { 836 error = vn_lock(vp, lkflags); 837 if (error) { 838 vput(vp); 839 return (error); 840 } 841 } 842 843 uvm_vnp_setsize(vp, 0); /* XXX notused */ 844 VREF(ip->i_devvp); 845 *vpp = vp; 846 return (0); 847 } 848 849 static int 850 ntfs_vget( 851 struct mount *mp, 852 ino_t ino, 853 struct vnode **vpp) 854 { 855 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 856 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 857 } 858 859 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 860 861 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 862 &ntfs_vnodeop_opv_desc, 863 NULL, 864 }; 865 866 struct vfsops ntfs_vfsops = { 867 MOUNT_NTFS, 868 sizeof (struct ntfs_args), 869 ntfs_mount, 870 ntfs_start, 871 ntfs_unmount, 872 ntfs_root, 873 (void *)eopnotsupp, /* vfs_quotactl */ 874 ntfs_statvfs, 875 ntfs_sync, 876 ntfs_vget, 877 ntfs_fhtovp, 878 ntfs_vptofh, 879 ntfs_init, 880 ntfs_reinit, 881 ntfs_done, 882 ntfs_mountroot, 883 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 884 vfs_stdextattrctl, 885 (void *)eopnotsupp, /* vfs_suspendctl */ 886 genfs_renamelock_enter, 887 genfs_renamelock_exit, 888 (void *)eopnotsupp, 889 ntfs_vnodeopv_descs, 890 0, 891 { NULL, NULL }, 892 }; 893 VFS_ATTACH(ntfs_vfsops); 894
Indexes created Tue Sep 23 21:09:50 GMT 2025