ntfs_vfsops.c revision 1.72.6.1.2.1
1 /* $NetBSD: ntfs_vfsops.c,v 1.72.6.1.2.1 2014/04/28 16:03:15 sborrill 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 1.72.6.1.2.1 2014/04/28 16:03:15 sborrill 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 (args == NULL) 180 return EINVAL; 181 if (*data_len < sizeof *args) 182 return EINVAL; 183 184 if (mp->mnt_flag & MNT_GETARGS) { 185 struct ntfsmount *ntmp = VFSTONTFS(mp); 186 if (ntmp == NULL) 187 return EIO; 188 args->fspec = NULL; 189 args->uid = ntmp->ntm_uid; 190 args->gid = ntmp->ntm_gid; 191 args->mode = ntmp->ntm_mode; 192 args->flag = ntmp->ntm_flag; 193 *data_len = sizeof *args; 194 return 0; 195 } 196 /* 197 *** 198 * Mounting non-root file system or updating a file system 199 *** 200 */ 201 202 /* 203 * If updating, check whether changing from read-only to 204 * read/write; if there is no device name, that's all we do. 205 */ 206 if (mp->mnt_flag & MNT_UPDATE) { 207 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 208 return (EINVAL); 209 } 210 211 /* 212 * Not an update, or updating the name: look up the name 213 * and verify that it refers to a sensible block device. 214 */ 215 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 216 err = namei(ndp); 217 if (err) { 218 /* can't get devvp!*/ 219 return (err); 220 } 221 222 devvp = ndp->ni_vp; 223 224 if (devvp->v_type != VBLK) { 225 err = ENOTBLK; 226 goto fail; 227 } 228 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 229 err = ENXIO; 230 goto fail; 231 } 232 if (mp->mnt_flag & MNT_UPDATE) { 233 #if 0 234 /* 235 ******************** 236 * UPDATE 237 ******************** 238 */ 239 240 if (devvp != ntmp->um_devvp) { 241 err = EINVAL; /* needs translation */ 242 goto fail; 243 } 244 245 /* 246 * Update device name only on success 247 */ 248 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 249 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 250 if (err) 251 goto fail; 252 253 vrele(devvp); 254 #endif 255 } else { 256 /* 257 ******************** 258 * NEW MOUNT 259 ******************** 260 */ 261 262 /* 263 * Since this is a new mount, we want the names for 264 * the device and the mount point copied in. If an 265 * error occurs, the mountpoint is discarded by the 266 * upper level code. 267 */ 268 269 /* Save "last mounted on" info for mount point (NULL pad)*/ 270 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 271 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 272 if (err) 273 goto fail; 274 275 if (mp->mnt_flag & MNT_RDONLY) 276 flags = FREAD; 277 else 278 flags = FREAD|FWRITE; 279 err = VOP_OPEN(devvp, flags, FSCRED); 280 if (err) 281 goto fail; 282 err = ntfs_mountfs(devvp, mp, args, l); 283 if (err) { 284 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 285 (void)VOP_CLOSE(devvp, flags, NOCRED); 286 VOP_UNLOCK(devvp, 0); 287 goto fail; 288 } 289 } 290 291 /* 292 * Initialize FS stat information in mount struct; uses both 293 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 294 * 295 * This code is common to root and non-root mounts 296 */ 297 (void)VFS_STATVFS(mp, &mp->mnt_stat); 298 return (err); 299 300 fail: 301 vrele(devvp); 302 return (err); 303 } 304 305 /* 306 * Common code for mount and mountroot 307 */ 308 int 309 ntfs_mountfs(devvp, mp, argsp, l) 310 struct vnode *devvp; 311 struct mount *mp; 312 struct ntfs_args *argsp; 313 struct lwp *l; 314 { 315 struct buf *bp; 316 struct ntfsmount *ntmp; 317 dev_t dev = devvp->v_rdev; 318 int error, ronly, i; 319 struct vnode *vp; 320 321 ntmp = NULL; 322 323 /* 324 * Flush out any old buffers remaining from a previous use. 325 */ 326 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 327 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 328 VOP_UNLOCK(devvp, 0); 329 if (error) 330 return (error); 331 332 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 333 334 bp = NULL; 335 336 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, 0, &bp); 337 if (error) 338 goto out; 339 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK ); 340 bzero( ntmp, sizeof *ntmp ); 341 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 342 brelse( bp , 0 ); 343 bp = NULL; 344 345 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 346 error = EINVAL; 347 dprintf(("ntfs_mountfs: invalid boot block\n")); 348 goto out; 349 } 350 351 { 352 int8_t cpr = ntmp->ntm_mftrecsz; 353 if( cpr > 0 ) 354 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 355 else 356 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 357 } 358 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 359 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 360 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 361 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 362 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 363 364 ntmp->ntm_mountp = mp; 365 ntmp->ntm_dev = dev; 366 ntmp->ntm_devvp = devvp; 367 ntmp->ntm_uid = argsp->uid; 368 ntmp->ntm_gid = argsp->gid; 369 ntmp->ntm_mode = argsp->mode; 370 ntmp->ntm_flag = argsp->flag; 371 mp->mnt_data = ntmp; 372 373 /* set file name encode/decode hooks XXX utf-8 only for now */ 374 ntmp->ntm_wget = ntfs_utf8_wget; 375 ntmp->ntm_wput = ntfs_utf8_wput; 376 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 377 378 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 379 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 380 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 381 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 382 383 /* 384 * We read in some system nodes to do not allow 385 * reclaim them and to have everytime access to them. 386 */ 387 { 388 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 389 for (i=0; i<3; i++) { 390 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 391 if(error) 392 goto out1; 393 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 394 VREF(ntmp->ntm_sysvn[pi[i]]); 395 vput(ntmp->ntm_sysvn[pi[i]]); 396 } 397 } 398 399 /* read the Unicode lowercase --> uppercase translation table, 400 * if necessary */ 401 if ((error = ntfs_toupper_use(mp, ntmp))) 402 goto out1; 403 404 /* 405 * Scan $BitMap and count free clusters 406 */ 407 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 408 if(error) 409 goto out1; 410 411 /* 412 * Read and translate to internal format attribute 413 * definition file. 414 */ 415 { 416 int num,j; 417 struct attrdef ad; 418 419 /* Open $AttrDef */ 420 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 421 if(error) 422 goto out1; 423 424 /* Count valid entries */ 425 for(num=0;;num++) { 426 error = ntfs_readattr(ntmp, VTONT(vp), 427 NTFS_A_DATA, NULL, 428 num * sizeof(ad), sizeof(ad), 429 &ad, NULL); 430 if (error) 431 goto out1; 432 if (ad.ad_name[0] == 0) 433 break; 434 } 435 436 /* Alloc memory for attribute definitions */ 437 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 438 num * sizeof(struct ntvattrdef), 439 M_NTFSMNT, M_WAITOK); 440 441 ntmp->ntm_adnum = num; 442 443 /* Read them and translate */ 444 for(i=0;i<num;i++){ 445 error = ntfs_readattr(ntmp, VTONT(vp), 446 NTFS_A_DATA, NULL, 447 i * sizeof(ad), sizeof(ad), 448 &ad, NULL); 449 if (error) 450 goto out1; 451 j = 0; 452 do { 453 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 454 } while(ad.ad_name[j++]); 455 ntmp->ntm_ad[i].ad_namelen = j - 1; 456 ntmp->ntm_ad[i].ad_type = ad.ad_type; 457 } 458 459 vput(vp); 460 } 461 462 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 463 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 464 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 465 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 466 mp->mnt_flag |= MNT_LOCAL; 467 devvp->v_specmountpoint = mp; 468 return (0); 469 470 out1: 471 for(i=0;i<NTFS_SYSNODESNUM;i++) 472 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 473 474 if (vflush(mp,NULLVP,0)) { 475 dprintf(("ntfs_mountfs: vflush failed\n")); 476 } 477 out: 478 devvp->v_specmountpoint = NULL; 479 if (bp) 480 brelse(bp, 0); 481 482 if (error) { 483 if (ntmp) { 484 if (ntmp->ntm_ad) 485 free(ntmp->ntm_ad, M_NTFSMNT); 486 free(ntmp, M_NTFSMNT); 487 } 488 } 489 490 return (error); 491 } 492 493 static int 494 ntfs_start ( 495 struct mount *mp, 496 int flags) 497 { 498 return (0); 499 } 500 501 static int 502 ntfs_unmount( 503 struct mount *mp, 504 int mntflags) 505 { 506 struct lwp *l = curlwp; 507 struct ntfsmount *ntmp; 508 int error, ronly = 0, flags, i; 509 510 dprintf(("ntfs_unmount: unmounting...\n")); 511 ntmp = VFSTONTFS(mp); 512 513 flags = 0; 514 if(mntflags & MNT_FORCE) 515 flags |= FORCECLOSE; 516 517 dprintf(("ntfs_unmount: vflushing...\n")); 518 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 519 if (error) { 520 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 521 return (error); 522 } 523 524 /* Check if only system vnodes are rest */ 525 for(i=0;i<NTFS_SYSNODESNUM;i++) 526 if((ntmp->ntm_sysvn[i]) && 527 (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); 528 529 /* Dereference all system vnodes */ 530 for(i=0;i<NTFS_SYSNODESNUM;i++) 531 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 532 533 /* vflush system vnodes */ 534 error = vflush(mp,NULLVP,flags); 535 if (error) { 536 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 537 } 538 539 /* Check if the type of device node isn't VBAD before 540 * touching v_specinfo. If the device vnode is revoked, the 541 * field is NULL and touching it causes null pointer derefercence. 542 */ 543 if (ntmp->ntm_devvp->v_type != VBAD) 544 ntmp->ntm_devvp->v_specmountpoint = NULL; 545 546 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 547 548 /* lock the device vnode before calling VOP_CLOSE() */ 549 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 550 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 551 NOCRED); 552 KASSERT(error == 0); 553 VOP_UNLOCK(ntmp->ntm_devvp, 0); 554 555 vrele(ntmp->ntm_devvp); 556 557 /* free the toupper table, if this has been last mounted ntfs volume */ 558 ntfs_toupper_unuse(); 559 560 dprintf(("ntfs_umount: freeing memory...\n")); 561 mp->mnt_data = NULL; 562 mp->mnt_flag &= ~MNT_LOCAL; 563 free(ntmp->ntm_ad, M_NTFSMNT); 564 FREE(ntmp, M_NTFSMNT); 565 return (0); 566 } 567 568 static int 569 ntfs_root( 570 struct mount *mp, 571 struct vnode **vpp) 572 { 573 struct vnode *nvp; 574 int error = 0; 575 576 dprintf(("ntfs_root(): sysvn: %p\n", 577 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 578 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 579 if(error) { 580 printf("ntfs_root: VFS_VGET failed: %d\n",error); 581 return (error); 582 } 583 584 *vpp = nvp; 585 return (0); 586 } 587 588 int 589 ntfs_calccfree( 590 struct ntfsmount *ntmp, 591 cn_t *cfreep) 592 { 593 struct vnode *vp; 594 u_int8_t *tmp; 595 int j, error; 596 cn_t cfree = 0; 597 size_t bmsize, i; 598 599 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 600 601 bmsize = VTOF(vp)->f_size; 602 603 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 604 605 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 606 0, bmsize, tmp, NULL); 607 if (error) 608 goto out; 609 610 for(i=0;i<bmsize;i++) 611 for(j=0;j<8;j++) 612 if(~tmp[i] & (1 << j)) cfree++; 613 *cfreep = cfree; 614 615 out: 616 free(tmp, M_TEMP); 617 return(error); 618 } 619 620 static int 621 ntfs_statvfs( 622 struct mount *mp, 623 struct statvfs *sbp) 624 { 625 struct ntfsmount *ntmp = VFSTONTFS(mp); 626 u_int64_t mftallocated; 627 628 dprintf(("ntfs_statvfs():\n")); 629 630 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 631 632 sbp->f_bsize = ntmp->ntm_bps; 633 sbp->f_frsize = sbp->f_bsize; /* XXX */ 634 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 635 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 636 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 637 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 638 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 639 sbp->f_ffree; 640 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 641 sbp->f_flag = mp->mnt_flag; 642 copy_statvfs_info(sbp, mp); 643 return (0); 644 } 645 646 static int 647 ntfs_sync ( 648 struct mount *mp, 649 int waitfor, 650 kauth_cred_t cred) 651 { 652 /*dprintf(("ntfs_sync():\n"));*/ 653 return (0); 654 } 655 656 /*ARGSUSED*/ 657 static int 658 ntfs_fhtovp( 659 struct mount *mp, 660 struct fid *fhp, 661 struct vnode **vpp) 662 { 663 struct ntfid ntfh; 664 int error; 665 666 if (fhp->fid_len != sizeof(struct ntfid)) 667 return EINVAL; 668 memcpy(&ntfh, fhp, sizeof(ntfh)); 669 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 670 (unsigned long long)ntfh.ntfid_ino)); 671 672 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 673 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 674 if (error != 0) { 675 *vpp = NULLVP; 676 return (error); 677 } 678 679 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 680 * with NTFS, we don't need to check anything else for now */ 681 return (0); 682 } 683 684 static int 685 ntfs_vptofh( 686 struct vnode *vp, 687 struct fid *fhp, 688 size_t *fh_size) 689 { 690 struct ntnode *ntp; 691 struct ntfid ntfh; 692 struct fnode *fn; 693 694 if (*fh_size < sizeof(struct ntfid)) { 695 *fh_size = sizeof(struct ntfid); 696 return E2BIG; 697 } 698 *fh_size = sizeof(struct ntfid); 699 700 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 701 vp)); 702 703 fn = VTOF(vp); 704 ntp = VTONT(vp); 705 memset(&ntfh, 0, sizeof(ntfh)); 706 ntfh.ntfid_len = sizeof(struct ntfid); 707 ntfh.ntfid_ino = ntp->i_number; 708 ntfh.ntfid_attr = fn->f_attrtype; 709 #ifdef notyet 710 ntfh.ntfid_gen = ntp->i_gen; 711 #endif 712 memcpy(fhp, &ntfh, sizeof(ntfh)); 713 return (0); 714 } 715 716 int 717 ntfs_vgetex( 718 struct mount *mp, 719 ino_t ino, 720 u_int32_t attrtype, 721 char *attrname, 722 u_long lkflags, 723 u_long flags, 724 struct vnode **vpp) 725 { 726 int error; 727 struct ntfsmount *ntmp; 728 struct ntnode *ip; 729 struct fnode *fp; 730 struct vnode *vp; 731 enum vtype f_type = VBAD; 732 733 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 734 " 0x%lx\n", (unsigned long long)ino, attrtype, 735 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 736 737 ntmp = VFSTONTFS(mp); 738 *vpp = NULL; 739 740 /* Get ntnode */ 741 error = ntfs_ntlookup(ntmp, ino, &ip); 742 if (error) { 743 printf("ntfs_vget: ntfs_ntget failed\n"); 744 return (error); 745 } 746 747 /* It may be not initialized fully, so force load it */ 748 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 749 error = ntfs_loadntnode(ntmp, ip); 750 if(error) { 751 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 752 " %llu\n", (unsigned long long)ip->i_number); 753 ntfs_ntput(ip); 754 return (error); 755 } 756 } 757 758 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 759 if (error) { 760 printf("ntfs_vget: ntfs_fget failed\n"); 761 ntfs_ntput(ip); 762 return (error); 763 } 764 765 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 766 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 767 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 768 f_type = VDIR; 769 } else if (flags & VG_EXT) { 770 f_type = VNON; 771 fp->f_size = fp->f_allocated = 0; 772 } else { 773 f_type = VREG; 774 775 error = ntfs_filesize(ntmp, fp, 776 &fp->f_size, &fp->f_allocated); 777 if (error) { 778 ntfs_ntput(ip); 779 return (error); 780 } 781 } 782 783 fp->f_flag |= FN_VALID; 784 } 785 786 /* 787 * We may be calling vget() now. To avoid potential deadlock, we need 788 * to release ntnode lock, since due to locking order vnode 789 * lock has to be acquired first. 790 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 791 * prematurely. 792 */ 793 ntfs_ntput(ip); 794 795 if (FTOV(fp)) { 796 /* vget() returns error if the vnode has been recycled */ 797 if (vget(FTOV(fp), lkflags) == 0) { 798 *vpp = FTOV(fp); 799 return (0); 800 } 801 } 802 803 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); 804 if(error) { 805 ntfs_frele(fp); 806 ntfs_ntput(ip); 807 return (error); 808 } 809 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 810 (unsigned long long)ino)); 811 812 fp->f_vp = vp; 813 vp->v_data = fp; 814 if (f_type != VBAD) 815 vp->v_type = f_type; 816 genfs_node_init(vp, &ntfs_genfsops); 817 818 if (ino == NTFS_ROOTINO) 819 vp->v_vflag |= VV_ROOT; 820 821 if (lkflags & LK_TYPE_MASK) { 822 error = vn_lock(vp, lkflags); 823 if (error) { 824 vput(vp); 825 return (error); 826 } 827 } 828 829 uvm_vnp_setsize(vp, fp->f_size); /* XXX: mess, cf. ntfs_lookupfile() */ 830 VREF(ip->i_devvp); 831 *vpp = vp; 832 return (0); 833 } 834 835 static int 836 ntfs_vget( 837 struct mount *mp, 838 ino_t ino, 839 struct vnode **vpp) 840 { 841 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 842 LK_EXCLUSIVE | LK_RETRY, 0, vpp); 843 } 844 845 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 846 847 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 848 &ntfs_vnodeop_opv_desc, 849 NULL, 850 }; 851 852 struct vfsops ntfs_vfsops = { 853 MOUNT_NTFS, 854 sizeof (struct ntfs_args), 855 ntfs_mount, 856 ntfs_start, 857 ntfs_unmount, 858 ntfs_root, 859 (void *)eopnotsupp, /* vfs_quotactl */ 860 ntfs_statvfs, 861 ntfs_sync, 862 ntfs_vget, 863 ntfs_fhtovp, 864 ntfs_vptofh, 865 ntfs_init, 866 ntfs_reinit, 867 ntfs_done, 868 ntfs_mountroot, 869 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 870 vfs_stdextattrctl, 871 (void *)eopnotsupp, /* vfs_suspendctl */ 872 genfs_renamelock_enter, 873 genfs_renamelock_exit, 874 (void *)eopnotsupp, 875 ntfs_vnodeopv_descs, 876 0, 877 { NULL, NULL }, 878 }; 879 880 static int 881 ntfs_modcmd(modcmd_t cmd, void *arg) 882 { 883 int error; 884 885 switch (cmd) { 886 case MODULE_CMD_INIT: 887 error = vfs_attach(&ntfs_vfsops); 888 if (error != 0) 889 break; 890 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 891 CTLFLAG_PERMANENT, 892 CTLTYPE_NODE, "vfs", NULL, 893 NULL, 0, NULL, 0, 894 CTL_VFS, CTL_EOL); 895 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 896 CTLFLAG_PERMANENT, 897 CTLTYPE_NODE, "ntfs", 898 SYSCTL_DESCR("NTFS file system"), 899 NULL, 0, NULL, 0, 900 CTL_VFS, 20, CTL_EOL); 901 /* 902 * XXX the "20" above could be dynamic, thereby eliminating 903 * one more instance of the "number to vfs" mapping problem, 904 * but "20" is the order as taken from sys/mount.h 905 */ 906 break; 907 case MODULE_CMD_FINI: 908 error = vfs_detach(&ntfs_vfsops); 909 if (error != 0) 910 break; 911 sysctl_teardown(&ntfs_sysctl_log); 912 break; 913 default: 914 error = ENOTTY; 915 break; 916 } 917 918 return (error); 919 } 920
Indexes created Wed Oct 01 15:09:59 GMT 2025