ntfs_vfsops.c revision 1.72
1 /* $NetBSD: ntfs_vfsops.c,v 1.72 2008/06/28 01:34:05 rumble 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 1.72 2008/06/28 01:34:05 rumble 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 #include <sys/module.h> 49 50 #include <uvm/uvm_extern.h> 51 52 #include <miscfs/genfs/genfs.h> 53 #include <miscfs/specfs/specdev.h> 54 55 #include <fs/ntfs/ntfs.h> 56 #include <fs/ntfs/ntfs_inode.h> 57 #include <fs/ntfs/ntfs_subr.h> 58 #include <fs/ntfs/ntfs_vfsops.h> 59 #include <fs/ntfs/ntfs_ihash.h> 60 #include <fs/ntfs/ntfsmount.h> 61 62 MODULE(MODULE_CLASS_VFS, ntfs, NULL); 63 64 MALLOC_JUSTDEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 65 MALLOC_JUSTDEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 66 MALLOC_JUSTDEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 67 MALLOC_JUSTDEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 68 69 static int ntfs_mount(struct mount *, const char *, void *, size_t *); 70 static int ntfs_root(struct mount *, struct vnode **); 71 static int ntfs_start(struct mount *, int); 72 static int ntfs_statvfs(struct mount *, struct statvfs *); 73 static int ntfs_sync(struct mount *, int, kauth_cred_t); 74 static int ntfs_unmount(struct mount *, int); 75 static int ntfs_vget(struct mount *mp, ino_t ino, 76 struct vnode **vpp); 77 static int ntfs_mountfs(struct vnode *, struct mount *, 78 struct ntfs_args *, struct lwp *); 79 static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); 80 81 static void ntfs_init(void); 82 static void ntfs_reinit(void); 83 static void ntfs_done(void); 84 static int ntfs_fhtovp(struct mount *, struct fid *, 85 struct vnode **); 86 static int ntfs_mountroot(void); 87 88 static const struct genfs_ops ntfs_genfsops = { 89 .gop_write = genfs_compat_gop_write, 90 }; 91 92 static struct sysctllog *ntfs_sysctl_log; 93 94 static int 95 ntfs_mountroot() 96 { 97 struct mount *mp; 98 struct lwp *l = curlwp; /* XXX */ 99 int error; 100 struct ntfs_args args; 101 102 if (device_class(root_device) != DV_DISK) 103 return (ENODEV); 104 105 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 106 vrele(rootvp); 107 return (error); 108 } 109 110 args.flag = 0; 111 args.uid = 0; 112 args.gid = 0; 113 args.mode = 0777; 114 115 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 116 vfs_unbusy(mp, false, NULL); 117 vfs_destroy(mp); 118 return (error); 119 } 120 121 mutex_enter(&mountlist_lock); 122 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 123 mutex_exit(&mountlist_lock); 124 (void)ntfs_statvfs(mp, &mp->mnt_stat); 125 vfs_unbusy(mp, false, NULL); 126 return (0); 127 } 128 129 static void 130 ntfs_init() 131 { 132 133 malloc_type_attach(M_NTFSMNT); 134 malloc_type_attach(M_NTFSNTNODE); 135 malloc_type_attach(M_NTFSFNODE); 136 malloc_type_attach(M_NTFSDIR); 137 malloc_type_attach(M_NTFSNTVATTR); 138 malloc_type_attach(M_NTFSRDATA); 139 malloc_type_attach(M_NTFSDECOMP); 140 malloc_type_attach(M_NTFSRUN); 141 ntfs_nthashinit(); 142 ntfs_toupper_init(); 143 } 144 145 static void 146 ntfs_reinit() 147 { 148 ntfs_nthashreinit(); 149 } 150 151 static void 152 ntfs_done() 153 { 154 ntfs_nthashdone(); 155 malloc_type_detach(M_NTFSMNT); 156 malloc_type_detach(M_NTFSNTNODE); 157 malloc_type_detach(M_NTFSFNODE); 158 malloc_type_detach(M_NTFSDIR); 159 malloc_type_detach(M_NTFSNTVATTR); 160 malloc_type_detach(M_NTFSRDATA); 161 malloc_type_detach(M_NTFSDECOMP); 162 malloc_type_detach(M_NTFSRUN); 163 } 164 165 static int 166 ntfs_mount ( 167 struct mount *mp, 168 const char *path, 169 void *data, 170 size_t *data_len) 171 { 172 struct nameidata nd; 173 struct lwp *l = curlwp; 174 struct nameidata *ndp = &nd; 175 int err = 0, flags; 176 struct vnode *devvp; 177 struct ntfs_args *args = data; 178 179 if (*data_len < sizeof *args) 180 return EINVAL; 181 182 if (mp->mnt_flag & MNT_GETARGS) { 183 struct ntfsmount *ntmp = VFSTONTFS(mp); 184 if (ntmp == NULL) 185 return EIO; 186 args->fspec = NULL; 187 args->uid = ntmp->ntm_uid; 188 args->gid = ntmp->ntm_gid; 189 args->mode = ntmp->ntm_mode; 190 args->flag = ntmp->ntm_flag; 191 *data_len = sizeof *args; 192 return 0; 193 } 194 /* 195 *** 196 * Mounting non-root file system or updating a file system 197 *** 198 */ 199 200 /* 201 * If updating, check whether changing from read-only to 202 * read/write; if there is no device name, that's all we do. 203 */ 204 if (mp->mnt_flag & MNT_UPDATE) { 205 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 206 return (EINVAL); 207 } 208 209 /* 210 * Not an update, or updating the name: look up the name 211 * and verify that it refers to a sensible block device. 212 */ 213 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 214 err = namei(ndp); 215 if (err) { 216 /* can't get devvp!*/ 217 return (err); 218 } 219 220 devvp = ndp->ni_vp; 221 222 if (devvp->v_type != VBLK) { 223 err = ENOTBLK; 224 goto fail; 225 } 226 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 227 err = ENXIO; 228 goto fail; 229 } 230 if (mp->mnt_flag & MNT_UPDATE) { 231 #if 0 232 /* 233 ******************** 234 * UPDATE 235 ******************** 236 */ 237 238 if (devvp != ntmp->um_devvp) { 239 err = EINVAL; /* needs translation */ 240 goto fail; 241 } 242 243 /* 244 * Update device name only on success 245 */ 246 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 247 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 248 if (err) 249 goto fail; 250 251 vrele(devvp); 252 #endif 253 } else { 254 /* 255 ******************** 256 * NEW MOUNT 257 ******************** 258 */ 259 260 /* 261 * Since this is a new mount, we want the names for 262 * the device and the mount point copied in. If an 263 * error occurs, the mountpoint is discarded by the 264 * upper level code. 265 */ 266 267 /* Save "last mounted on" info for mount point (NULL pad)*/ 268 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 269 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 270 if (err) 271 goto fail; 272 273 if (mp->mnt_flag & MNT_RDONLY) 274 flags = FREAD; 275 else 276 flags = FREAD|FWRITE; 277 err = VOP_OPEN(devvp, flags, FSCRED); 278 if (err) 279 goto fail; 280 err = ntfs_mountfs(devvp, mp, args, l); 281 if (err) { 282 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 283 (void)VOP_CLOSE(devvp, flags, NOCRED); 284 VOP_UNLOCK(devvp, 0); 285 goto fail; 286 } 287 } 288 289 /* 290 * Initialize FS stat information in mount struct; uses both 291 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 292 * 293 * This code is common to root and non-root mounts 294 */ 295 (void)VFS_STATVFS(mp, &mp->mnt_stat); 296 return (err); 297 298 fail: 299 vrele(devvp); 300 return (err); 301 } 302 303 /* 304 * Common code for mount and mountroot 305 */ 306 int 307 ntfs_mountfs(devvp, mp, argsp, l) 308 struct vnode *devvp; 309 struct mount *mp; 310 struct ntfs_args *argsp; 311 struct lwp *l; 312 { 313 struct buf *bp; 314 struct ntfsmount *ntmp; 315 dev_t dev = devvp->v_rdev; 316 int error, ronly, i; 317 struct vnode *vp; 318 319 ntmp = NULL; 320 321 /* 322 * Flush out any old buffers remaining from a previous use. 323 */ 324 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 325 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 326 VOP_UNLOCK(devvp, 0); 327 if (error) 328 return (error); 329 330 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 331 332 bp = NULL; 333 334 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, 0, &bp); 335 if (error) 336 goto out; 337 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 338 bzero( ntmp, sizeof *ntmp ); 339 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 340 brelse( bp , 0 ); 341 bp = NULL; 342 343 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 344 error = EINVAL; 345 dprintf(("ntfs_mountfs: invalid boot block\n")); 346 goto out; 347 } 348 349 { 350 int8_t cpr = ntmp->ntm_mftrecsz; 351 if( cpr > 0 ) 352 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 353 else 354 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 355 } 356 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 357 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 358 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 359 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 360 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 361 362 ntmp->ntm_mountp = mp; 363 ntmp->ntm_dev = dev; 364 ntmp->ntm_devvp = devvp; 365 ntmp->ntm_uid = argsp->uid; 366 ntmp->ntm_gid = argsp->gid; 367 ntmp->ntm_mode = argsp->mode; 368 ntmp->ntm_flag = argsp->flag; 369 mp->mnt_data = ntmp; 370 371 /* set file name encode/decode hooks XXX utf-8 only for now */ 372 ntmp->ntm_wget = ntfs_utf8_wget; 373 ntmp->ntm_wput = ntfs_utf8_wput; 374 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 375 376 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 377 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 378 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 379 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 380 381 /* 382 * We read in some system nodes to do not allow 383 * reclaim them and to have everytime access to them. 384 */ 385 { 386 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 387 for (i=0; i<3; i++) { 388 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 389 if(error) 390 goto out1; 391 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 392 VREF(ntmp->ntm_sysvn[pi[i]]); 393 vput(ntmp->ntm_sysvn[pi[i]]); 394 } 395 } 396 397 /* read the Unicode lowercase --> uppercase translation table, 398 * if necessary */ 399 if ((error = ntfs_toupper_use(mp, ntmp))) 400 goto out1; 401 402 /* 403 * Scan $BitMap and count free clusters 404 */ 405 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 406 if(error) 407 goto out1; 408 409 /* 410 * Read and translate to internal format attribute 411 * definition file. 412 */ 413 { 414 int num,j; 415 struct attrdef ad; 416 417 /* Open $AttrDef */ 418 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 419 if(error) 420 goto out1; 421 422 /* Count valid entries */ 423 for(num=0;;num++) { 424 error = ntfs_readattr(ntmp, VTONT(vp), 425 NTFS_A_DATA, NULL, 426 num * sizeof(ad), sizeof(ad), 427 &ad, NULL); 428 if (error) 429 goto out1; 430 if (ad.ad_name[0] == 0) 431 break; 432 } 433 434 /* Alloc memory for attribute definitions */ 435 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 436 num * sizeof(struct ntvattrdef), 437 M_NTFSMNT, M_WAITOK); 438 439 ntmp->ntm_adnum = num; 440 441 /* Read them and translate */ 442 for(i=0;i<num;i++){ 443 error = ntfs_readattr(ntmp, VTONT(vp), 444 NTFS_A_DATA, NULL, 445 i * sizeof(ad), sizeof(ad), 446 &ad, NULL); 447 if (error) 448 goto out1; 449 j = 0; 450 do { 451 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 452 } while(ad.ad_name[j++]); 453 ntmp->ntm_ad[i].ad_namelen = j - 1; 454 ntmp->ntm_ad[i].ad_type = ad.ad_type; 455 } 456 457 vput(vp); 458 } 459 460 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 461 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 462 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 463 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 464 mp->mnt_flag |= MNT_LOCAL; 465 devvp->v_specmountpoint = mp; 466 return (0); 467 468 out1: 469 for(i=0;i<NTFS_SYSNODESNUM;i++) 470 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 471 472 if (vflush(mp,NULLVP,0)) { 473 dprintf(("ntfs_mountfs: vflush failed\n")); 474 } 475 out: 476 devvp->v_specmountpoint = NULL; 477 if (bp) 478 brelse(bp, 0); 479 480 if (error) { 481 if (ntmp) { 482 if (ntmp->ntm_ad) 483 free(ntmp->ntm_ad, M_NTFSMNT); 484 free(ntmp, M_NTFSMNT); 485 } 486 } 487 488 return (error); 489 } 490 491 static int 492 ntfs_start ( 493 struct mount *mp, 494 int flags) 495 { 496 return (0); 497 } 498 499 static int 500 ntfs_unmount( 501 struct mount *mp, 502 int mntflags) 503 { 504 struct lwp *l = curlwp; 505 struct ntfsmount *ntmp; 506 int error, ronly = 0, flags, i; 507 508 dprintf(("ntfs_unmount: unmounting...\n")); 509 ntmp = VFSTONTFS(mp); 510 511 flags = 0; 512 if(mntflags & MNT_FORCE) 513 flags |= FORCECLOSE; 514 515 dprintf(("ntfs_unmount: vflushing...\n")); 516 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 517 if (error) { 518 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 519 return (error); 520 } 521 522 /* Check if only system vnodes are rest */ 523 for(i=0;i<NTFS_SYSNODESNUM;i++) 524 if((ntmp->ntm_sysvn[i]) && 525 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 526 527 /* Dereference all system vnodes */ 528 for(i=0;i<NTFS_SYSNODESNUM;i++) 529 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 530 531 /* vflush system vnodes */ 532 error = vflush(mp,NULLVP,flags); 533 if (error) { 534 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 535 } 536 537 /* Check if the type of device node isn't VBAD before 538 * touching v_specinfo. If the device vnode is revoked, the 539 * field is NULL and touching it causes null pointer derefercence. 540 */ 541 if (ntmp->ntm_devvp->v_type != VBAD) 542 ntmp->ntm_devvp->v_specmountpoint = NULL; 543 544 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 545 546 /* lock the device vnode before calling VOP_CLOSE() */ 547 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 548 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 549 NOCRED); 550 KASSERT(error == 0); 551 VOP_UNLOCK(ntmp->ntm_devvp, 0); 552 553 vrele(ntmp->ntm_devvp); 554 555 /* free the toupper table, if this has been last mounted ntfs volume */ 556 ntfs_toupper_unuse(); 557 558 dprintf(("ntfs_umount: freeing memory...\n")); 559 mp->mnt_data = NULL; 560 mp->mnt_flag &= ~MNT_LOCAL; 561 free(ntmp->ntm_ad, M_NTFSMNT); 562 FREE(ntmp, M_NTFSMNT); 563 return (0); 564 } 565 566 static int 567 ntfs_root( 568 struct mount *mp, 569 struct vnode **vpp) 570 { 571 struct vnode *nvp; 572 int error = 0; 573 574 dprintf(("ntfs_root(): sysvn: %p\n", 575 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 576 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 577 if(error) { 578 printf("ntfs_root: VFS_VGET failed: %d\n",error); 579 return (error); 580 } 581 582 *vpp = nvp; 583 return (0); 584 } 585 586 int 587 ntfs_calccfree( 588 struct ntfsmount *ntmp, 589 cn_t *cfreep) 590 { 591 struct vnode *vp; 592 u_int8_t *tmp; 593 int j, error; 594 cn_t cfree = 0; 595 size_t bmsize, i; 596 597 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 598 599 bmsize = VTOF(vp)->f_size; 600 601 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 602 603 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 604 0, bmsize, tmp, NULL); 605 if (error) 606 goto out; 607 608 for(i=0;i<bmsize;i++) 609 for(j=0;j<8;j++) 610 if(~tmp[i] & (1 << j)) cfree++; 611 *cfreep = cfree; 612 613 out: 614 free(tmp, M_TEMP); 615 return(error); 616 } 617 618 static int 619 ntfs_statvfs( 620 struct mount *mp, 621 struct statvfs *sbp) 622 { 623 struct ntfsmount *ntmp = VFSTONTFS(mp); 624 u_int64_t mftallocated; 625 626 dprintf(("ntfs_statvfs():\n")); 627 628 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 629 630 sbp->f_bsize = ntmp->ntm_bps; 631 sbp->f_frsize = sbp->f_bsize; /* XXX */ 632 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 633 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 634 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 635 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 636 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 637 sbp->f_ffree; 638 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 639 sbp->f_flag = mp->mnt_flag; 640 copy_statvfs_info(sbp, mp); 641 return (0); 642 } 643 644 static int 645 ntfs_sync ( 646 struct mount *mp, 647 int waitfor, 648 kauth_cred_t cred) 649 { 650 /*dprintf(("ntfs_sync():\n"));*/ 651 return (0); 652 } 653 654 /*ARGSUSED*/ 655 static int 656 ntfs_fhtovp( 657 struct mount *mp, 658 struct fid *fhp, 659 struct vnode **vpp) 660 { 661 struct ntfid ntfh; 662 int error; 663 664 if (fhp->fid_len != sizeof(struct ntfid)) 665 return EINVAL; 666 memcpy(&ntfh, fhp, sizeof(ntfh)); 667 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 668 (unsigned long long)ntfh.ntfid_ino)); 669 670 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 671 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 672 if (error != 0) { 673 *vpp = NULLVP; 674 return (error); 675 } 676 677 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 678 * with NTFS, we don't need to check anything else for now */ 679 return (0); 680 } 681 682 static int 683 ntfs_vptofh( 684 struct vnode *vp, 685 struct fid *fhp, 686 size_t *fh_size) 687 { 688 struct ntnode *ntp; 689 struct ntfid ntfh; 690 struct fnode *fn; 691 692 if (*fh_size < sizeof(struct ntfid)) { 693 *fh_size = sizeof(struct ntfid); 694 return E2BIG; 695 } 696 *fh_size = sizeof(struct ntfid); 697 698 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 699 vp)); 700 701 fn = VTOF(vp); 702 ntp = VTONT(vp); 703 memset(&ntfh, 0, sizeof(ntfh)); 704 ntfh.ntfid_len = sizeof(struct ntfid); 705 ntfh.ntfid_ino = ntp->i_number; 706 ntfh.ntfid_attr = fn->f_attrtype; 707 #ifdef notyet 708 ntfh.ntfid_gen = ntp->i_gen; 709 #endif 710 memcpy(fhp, &ntfh, sizeof(ntfh)); 711 return (0); 712 } 713 714 int 715 ntfs_vgetex( 716 struct mount *mp, 717 ino_t ino, 718 u_int32_t attrtype, 719 char *attrname, 720 u_long lkflags, 721 u_long flags, 722 struct vnode **vpp) 723 { 724 int error; 725 struct ntfsmount *ntmp; 726 struct ntnode *ip; 727 struct fnode *fp; 728 struct vnode *vp; 729 enum vtype f_type = VBAD; 730 731 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 732 " 0x%lx\n", (unsigned long long)ino, attrtype, 733 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 734 735 ntmp = VFSTONTFS(mp); 736 *vpp = NULL; 737 738 /* Get ntnode */ 739 error = ntfs_ntlookup(ntmp, ino, &ip); 740 if (error) { 741 printf("ntfs_vget: ntfs_ntget failed\n"); 742 return (error); 743 } 744 745 /* It may be not initialized fully, so force load it */ 746 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 747 error = ntfs_loadntnode(ntmp, ip); 748 if(error) { 749 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 750 " %llu\n", (unsigned long long)ip->i_number); 751 ntfs_ntput(ip); 752 return (error); 753 } 754 } 755 756 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 757 if (error) { 758 printf("ntfs_vget: ntfs_fget failed\n"); 759 ntfs_ntput(ip); 760 return (error); 761 } 762 763 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 764 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 765 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 766 f_type = VDIR; 767 } else if (flags & VG_EXT) { 768 f_type = VNON; 769 fp->f_size = fp->f_allocated = 0; 770 } else { 771 f_type = VREG; 772 773 error = ntfs_filesize(ntmp, fp, 774 &fp->f_size, &fp->f_allocated); 775 if (error) { 776 ntfs_ntput(ip); 777 return (error); 778 } 779 } 780 781 fp->f_flag |= FN_VALID; 782 } 783 784 /* 785 * We may be calling vget() now. To avoid potential deadlock, we need 786 * to release ntnode lock, since due to locking order vnode 787 * lock has to be acquired first. 788 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 789 * prematurely. 790 */ 791 ntfs_ntput(ip); 792 793 if (FTOV(fp)) { 794 /* vget() returns error if the vnode has been recycled */ 795 if (vget(FTOV(fp), lkflags) == 0) { 796 *vpp = FTOV(fp); 797 return (0); 798 } 799 } 800 801 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 802 if(error) { 803 ntfs_frele(fp); 804 ntfs_ntput(ip); 805 return (error); 806 } 807 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 808 (unsigned long long)ino)); 809 810 fp->f_vp = vp; 811 vp->v_data = fp; 812 if (f_type != VBAD) 813 vp->v_type = f_type; 814 genfs_node_init(vp, &ntfs_genfsops); 815 816 if (ino == NTFS_ROOTINO) 817 vp->v_vflag |= VV_ROOT; 818 819 if (lkflags & LK_TYPE_MASK) { 820 error = vn_lock(vp, lkflags); 821 if (error) { 822 vput(vp); 823 return (error); 824 } 825 } 826 827 uvm_vnp_setsize(vp, 0); /* XXX notused */ 828 VREF(ip->i_devvp); 829 *vpp = vp; 830 return (0); 831 } 832 833 static int 834 ntfs_vget( 835 struct mount *mp, 836 ino_t ino, 837 struct vnode **vpp) 838 { 839 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 840 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 841 } 842 843 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 844 845 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 846 &ntfs_vnodeop_opv_desc, 847 NULL, 848 }; 849 850 struct vfsops ntfs_vfsops = { 851 MOUNT_NTFS, 852 sizeof (struct ntfs_args), 853 ntfs_mount, 854 ntfs_start, 855 ntfs_unmount, 856 ntfs_root, 857 (void *)eopnotsupp, /* vfs_quotactl */ 858 ntfs_statvfs, 859 ntfs_sync, 860 ntfs_vget, 861 ntfs_fhtovp, 862 ntfs_vptofh, 863 ntfs_init, 864 ntfs_reinit, 865 ntfs_done, 866 ntfs_mountroot, 867 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 868 vfs_stdextattrctl, 869 (void *)eopnotsupp, /* vfs_suspendctl */ 870 genfs_renamelock_enter, 871 genfs_renamelock_exit, 872 (void *)eopnotsupp, 873 ntfs_vnodeopv_descs, 874 0, 875 { NULL, NULL }, 876 }; 877 878 static int 879 ntfs_modcmd(modcmd_t cmd, void *arg) 880 { 881 int error; 882 883 switch (cmd) { 884 case MODULE_CMD_INIT: 885 error = vfs_attach(&ntfs_vfsops); 886 if (error != 0) 887 break; 888 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 889 CTLFLAG_PERMANENT, 890 CTLTYPE_NODE, "vfs", NULL, 891 NULL, 0, NULL, 0, 892 CTL_VFS, CTL_EOL); 893 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 894 CTLFLAG_PERMANENT, 895 CTLTYPE_NODE, "ntfs", 896 SYSCTL_DESCR("NTFS file system"), 897 NULL, 0, NULL, 0, 898 CTL_VFS, 20, CTL_EOL); 899 /* 900 * XXX the "20" above could be dynamic, thereby eliminating 901 * one more instance of the "number to vfs" mapping problem, 902 * but "20" is the order as taken from sys/mount.h 903 */ 904 break; 905 case MODULE_CMD_FINI: 906 error = vfs_detach(&ntfs_vfsops); 907 if (error != 0) 908 break; 909 sysctl_teardown(&ntfs_sysctl_log); 910 break; 911 default: 912 error = ENOTTY; 913 break; 914 } 915 916 return (error); 917 } 918
Indexes created Tue Sep 23 02:09:52 GMT 2025