ntfs_vfsops.c revision 1.65.6.3
1 /* $NetBSD: ntfs_vfsops.c,v 1.65.6.3 2009/01/17 13:29:17 mjf 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 1.65.6.3 2009/01/17 13:29:17 mjf 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|M_ZERO); 338 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 339 brelse( bp , 0 ); 340 bp = NULL; 341 342 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 343 error = EINVAL; 344 dprintf(("ntfs_mountfs: invalid boot block\n")); 345 goto out; 346 } 347 348 { 349 int8_t cpr = ntmp->ntm_mftrecsz; 350 if( cpr > 0 ) 351 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 352 else 353 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 354 } 355 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 356 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 357 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 358 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 359 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 360 361 ntmp->ntm_mountp = mp; 362 ntmp->ntm_dev = dev; 363 ntmp->ntm_devvp = devvp; 364 ntmp->ntm_uid = argsp->uid; 365 ntmp->ntm_gid = argsp->gid; 366 ntmp->ntm_mode = argsp->mode; 367 ntmp->ntm_flag = argsp->flag; 368 mp->mnt_data = ntmp; 369 370 /* set file name encode/decode hooks XXX utf-8 only for now */ 371 ntmp->ntm_wget = ntfs_utf8_wget; 372 ntmp->ntm_wput = ntfs_utf8_wput; 373 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 374 375 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 376 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 377 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 378 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 379 380 /* 381 * We read in some system nodes to do not allow 382 * reclaim them and to have everytime access to them. 383 */ 384 { 385 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 386 for (i=0; i<3; i++) { 387 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 388 if(error) 389 goto out1; 390 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 391 VREF(ntmp->ntm_sysvn[pi[i]]); 392 vput(ntmp->ntm_sysvn[pi[i]]); 393 } 394 } 395 396 /* read the Unicode lowercase --> uppercase translation table, 397 * if necessary */ 398 if ((error = ntfs_toupper_use(mp, ntmp))) 399 goto out1; 400 401 /* 402 * Scan $BitMap and count free clusters 403 */ 404 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 405 if(error) 406 goto out1; 407 408 /* 409 * Read and translate to internal format attribute 410 * definition file. 411 */ 412 { 413 int num,j; 414 struct attrdef ad; 415 416 /* Open $AttrDef */ 417 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 418 if(error) 419 goto out1; 420 421 /* Count valid entries */ 422 for(num=0;;num++) { 423 error = ntfs_readattr(ntmp, VTONT(vp), 424 NTFS_A_DATA, NULL, 425 num * sizeof(ad), sizeof(ad), 426 &ad, NULL); 427 if (error) 428 goto out1; 429 if (ad.ad_name[0] == 0) 430 break; 431 } 432 433 /* Alloc memory for attribute definitions */ 434 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 435 num * sizeof(struct ntvattrdef), 436 M_NTFSMNT, M_WAITOK); 437 438 ntmp->ntm_adnum = num; 439 440 /* Read them and translate */ 441 for(i=0;i<num;i++){ 442 error = ntfs_readattr(ntmp, VTONT(vp), 443 NTFS_A_DATA, NULL, 444 i * sizeof(ad), sizeof(ad), 445 &ad, NULL); 446 if (error) 447 goto out1; 448 j = 0; 449 do { 450 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 451 } while(ad.ad_name[j++]); 452 ntmp->ntm_ad[i].ad_namelen = j - 1; 453 ntmp->ntm_ad[i].ad_type = ad.ad_type; 454 } 455 456 vput(vp); 457 } 458 459 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 460 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 461 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 462 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 463 mp->mnt_flag |= MNT_LOCAL; 464 devvp->v_specmountpoint = mp; 465 return (0); 466 467 out1: 468 for(i=0;i<NTFS_SYSNODESNUM;i++) 469 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 470 471 if (vflush(mp,NULLVP,0)) { 472 dprintf(("ntfs_mountfs: vflush failed\n")); 473 } 474 out: 475 devvp->v_specmountpoint = NULL; 476 if (bp) 477 brelse(bp, 0); 478 479 if (error) { 480 if (ntmp) { 481 if (ntmp->ntm_ad) 482 free(ntmp->ntm_ad, M_NTFSMNT); 483 free(ntmp, M_NTFSMNT); 484 } 485 } 486 487 return (error); 488 } 489 490 static int 491 ntfs_start ( 492 struct mount *mp, 493 int flags) 494 { 495 return (0); 496 } 497 498 static int 499 ntfs_unmount( 500 struct mount *mp, 501 int mntflags) 502 { 503 struct lwp *l = curlwp; 504 struct ntfsmount *ntmp; 505 int error, ronly = 0, flags, i; 506 507 dprintf(("ntfs_unmount: unmounting...\n")); 508 ntmp = VFSTONTFS(mp); 509 510 flags = 0; 511 if(mntflags & MNT_FORCE) 512 flags |= FORCECLOSE; 513 514 dprintf(("ntfs_unmount: vflushing...\n")); 515 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 516 if (error) { 517 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 518 return (error); 519 } 520 521 /* Check if only system vnodes are rest */ 522 for(i=0;i<NTFS_SYSNODESNUM;i++) 523 if((ntmp->ntm_sysvn[i]) && 524 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 525 526 /* Dereference all system vnodes */ 527 for(i=0;i<NTFS_SYSNODESNUM;i++) 528 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 529 530 /* vflush system vnodes */ 531 error = vflush(mp,NULLVP,flags); 532 if (error) { 533 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 534 } 535 536 /* Check if the type of device node isn't VBAD before 537 * touching v_specinfo. If the device vnode is revoked, the 538 * field is NULL and touching it causes null pointer derefercence. 539 */ 540 if (ntmp->ntm_devvp->v_type != VBAD) 541 ntmp->ntm_devvp->v_specmountpoint = NULL; 542 543 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 544 545 /* lock the device vnode before calling VOP_CLOSE() */ 546 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 547 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 548 NOCRED); 549 KASSERT(error == 0); 550 VOP_UNLOCK(ntmp->ntm_devvp, 0); 551 552 vrele(ntmp->ntm_devvp); 553 554 /* free the toupper table, if this has been last mounted ntfs volume */ 555 ntfs_toupper_unuse(); 556 557 dprintf(("ntfs_umount: freeing memory...\n")); 558 mp->mnt_data = NULL; 559 mp->mnt_flag &= ~MNT_LOCAL; 560 free(ntmp->ntm_ad, M_NTFSMNT); 561 free(ntmp, M_NTFSMNT); 562 return (0); 563 } 564 565 static int 566 ntfs_root( 567 struct mount *mp, 568 struct vnode **vpp) 569 { 570 struct vnode *nvp; 571 int error = 0; 572 573 dprintf(("ntfs_root(): sysvn: %p\n", 574 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 575 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 576 if(error) { 577 printf("ntfs_root: VFS_VGET failed: %d\n",error); 578 return (error); 579 } 580 581 *vpp = nvp; 582 return (0); 583 } 584 585 int 586 ntfs_calccfree( 587 struct ntfsmount *ntmp, 588 cn_t *cfreep) 589 { 590 struct vnode *vp; 591 u_int8_t *tmp; 592 int j, error; 593 cn_t cfree = 0; 594 size_t bmsize, i; 595 596 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 597 598 bmsize = VTOF(vp)->f_size; 599 600 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 601 602 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 603 0, bmsize, tmp, NULL); 604 if (error) 605 goto out; 606 607 for(i=0;i<bmsize;i++) 608 for(j=0;j<8;j++) 609 if(~tmp[i] & (1 << j)) cfree++; 610 *cfreep = cfree; 611 612 out: 613 free(tmp, M_TEMP); 614 return(error); 615 } 616 617 static int 618 ntfs_statvfs( 619 struct mount *mp, 620 struct statvfs *sbp) 621 { 622 struct ntfsmount *ntmp = VFSTONTFS(mp); 623 u_int64_t mftallocated; 624 625 dprintf(("ntfs_statvfs():\n")); 626 627 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 628 629 sbp->f_bsize = ntmp->ntm_bps; 630 sbp->f_frsize = sbp->f_bsize; /* XXX */ 631 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 632 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 633 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 634 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 635 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 636 sbp->f_ffree; 637 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 638 sbp->f_flag = mp->mnt_flag; 639 copy_statvfs_info(sbp, mp); 640 return (0); 641 } 642 643 static int 644 ntfs_sync ( 645 struct mount *mp, 646 int waitfor, 647 kauth_cred_t cred) 648 { 649 /*dprintf(("ntfs_sync():\n"));*/ 650 return (0); 651 } 652 653 /*ARGSUSED*/ 654 static int 655 ntfs_fhtovp( 656 struct mount *mp, 657 struct fid *fhp, 658 struct vnode **vpp) 659 { 660 struct ntfid ntfh; 661 int error; 662 663 if (fhp->fid_len != sizeof(struct ntfid)) 664 return EINVAL; 665 memcpy(&ntfh, fhp, sizeof(ntfh)); 666 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 667 (unsigned long long)ntfh.ntfid_ino)); 668 669 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 670 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 671 if (error != 0) { 672 *vpp = NULLVP; 673 return (error); 674 } 675 676 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 677 * with NTFS, we don't need to check anything else for now */ 678 return (0); 679 } 680 681 static int 682 ntfs_vptofh( 683 struct vnode *vp, 684 struct fid *fhp, 685 size_t *fh_size) 686 { 687 struct ntnode *ntp; 688 struct ntfid ntfh; 689 struct fnode *fn; 690 691 if (*fh_size < sizeof(struct ntfid)) { 692 *fh_size = sizeof(struct ntfid); 693 return E2BIG; 694 } 695 *fh_size = sizeof(struct ntfid); 696 697 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 698 vp)); 699 700 fn = VTOF(vp); 701 ntp = VTONT(vp); 702 memset(&ntfh, 0, sizeof(ntfh)); 703 ntfh.ntfid_len = sizeof(struct ntfid); 704 ntfh.ntfid_ino = ntp->i_number; 705 ntfh.ntfid_attr = fn->f_attrtype; 706 #ifdef notyet 707 ntfh.ntfid_gen = ntp->i_gen; 708 #endif 709 memcpy(fhp, &ntfh, sizeof(ntfh)); 710 return (0); 711 } 712 713 int 714 ntfs_vgetex( 715 struct mount *mp, 716 ino_t ino, 717 u_int32_t attrtype, 718 char *attrname, 719 u_long lkflags, 720 u_long flags, 721 struct vnode **vpp) 722 { 723 int error; 724 struct ntfsmount *ntmp; 725 struct ntnode *ip; 726 struct fnode *fp; 727 struct vnode *vp; 728 enum vtype f_type = VBAD; 729 730 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 731 " 0x%lx\n", (unsigned long long)ino, attrtype, 732 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 733 734 ntmp = VFSTONTFS(mp); 735 *vpp = NULL; 736 737 /* Get ntnode */ 738 error = ntfs_ntlookup(ntmp, ino, &ip); 739 if (error) { 740 printf("ntfs_vget: ntfs_ntget failed\n"); 741 return (error); 742 } 743 744 /* It may be not initialized fully, so force load it */ 745 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 746 error = ntfs_loadntnode(ntmp, ip); 747 if(error) { 748 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 749 " %llu\n", (unsigned long long)ip->i_number); 750 ntfs_ntput(ip); 751 return (error); 752 } 753 } 754 755 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 756 if (error) { 757 printf("ntfs_vget: ntfs_fget failed\n"); 758 ntfs_ntput(ip); 759 return (error); 760 } 761 762 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 763 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 764 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 765 f_type = VDIR; 766 } else if (flags & VG_EXT) { 767 f_type = VNON; 768 fp->f_size = fp->f_allocated = 0; 769 } else { 770 f_type = VREG; 771 772 error = ntfs_filesize(ntmp, fp, 773 &fp->f_size, &fp->f_allocated); 774 if (error) { 775 ntfs_ntput(ip); 776 return (error); 777 } 778 } 779 780 fp->f_flag |= FN_VALID; 781 } 782 783 /* 784 * We may be calling vget() now. To avoid potential deadlock, we need 785 * to release ntnode lock, since due to locking order vnode 786 * lock has to be acquired first. 787 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 788 * prematurely. 789 */ 790 ntfs_ntput(ip); 791 792 if (FTOV(fp)) { 793 /* vget() returns error if the vnode has been recycled */ 794 if (vget(FTOV(fp), lkflags) == 0) { 795 *vpp = FTOV(fp); 796 return (0); 797 } 798 } 799 800 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 801 if(error) { 802 ntfs_frele(fp); 803 ntfs_ntput(ip); 804 return (error); 805 } 806 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 807 (unsigned long long)ino)); 808 809 fp->f_vp = vp; 810 vp->v_data = fp; 811 if (f_type != VBAD) 812 vp->v_type = f_type; 813 genfs_node_init(vp, &ntfs_genfsops); 814 815 if (ino == NTFS_ROOTINO) 816 vp->v_vflag |= VV_ROOT; 817 818 if (lkflags & LK_TYPE_MASK) { 819 error = vn_lock(vp, lkflags); 820 if (error) { 821 vput(vp); 822 return (error); 823 } 824 } 825 826 uvm_vnp_setsize(vp, 0); /* XXX notused */ 827 VREF(ip->i_devvp); 828 *vpp = vp; 829 return (0); 830 } 831 832 static int 833 ntfs_vget( 834 struct mount *mp, 835 ino_t ino, 836 struct vnode **vpp) 837 { 838 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 839 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 840 } 841 842 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 843 844 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 845 &ntfs_vnodeop_opv_desc, 846 NULL, 847 }; 848 849 struct vfsops ntfs_vfsops = { 850 MOUNT_NTFS, 851 sizeof (struct ntfs_args), 852 ntfs_mount, 853 ntfs_start, 854 ntfs_unmount, 855 ntfs_root, 856 (void *)eopnotsupp, /* vfs_quotactl */ 857 ntfs_statvfs, 858 ntfs_sync, 859 ntfs_vget, 860 ntfs_fhtovp, 861 ntfs_vptofh, 862 ntfs_init, 863 ntfs_reinit, 864 ntfs_done, 865 ntfs_mountroot, 866 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 867 vfs_stdextattrctl, 868 (void *)eopnotsupp, /* vfs_suspendctl */ 869 genfs_renamelock_enter, 870 genfs_renamelock_exit, 871 (void *)eopnotsupp, 872 ntfs_vnodeopv_descs, 873 0, 874 { NULL, NULL }, 875 }; 876 877 static int 878 ntfs_modcmd(modcmd_t cmd, void *arg) 879 { 880 int error; 881 882 switch (cmd) { 883 case MODULE_CMD_INIT: 884 error = vfs_attach(&ntfs_vfsops); 885 if (error != 0) 886 break; 887 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 888 CTLFLAG_PERMANENT, 889 CTLTYPE_NODE, "vfs", NULL, 890 NULL, 0, NULL, 0, 891 CTL_VFS, CTL_EOL); 892 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 893 CTLFLAG_PERMANENT, 894 CTLTYPE_NODE, "ntfs", 895 SYSCTL_DESCR("NTFS file system"), 896 NULL, 0, NULL, 0, 897 CTL_VFS, 20, CTL_EOL); 898 /* 899 * XXX the "20" above could be dynamic, thereby eliminating 900 * one more instance of the "number to vfs" mapping problem, 901 * but "20" is the order as taken from sys/mount.h 902 */ 903 break; 904 case MODULE_CMD_FINI: 905 error = vfs_detach(&ntfs_vfsops); 906 if (error != 0) 907 break; 908 sysctl_teardown(&ntfs_sysctl_log); 909 break; 910 default: 911 error = ENOTTY; 912 break; 913 } 914 915 return (error); 916 } 917
Indexes created Wed Oct 01 19:09:53 GMT 2025