ntfs_vfsops.c revision 1.94.2.1
1 /* $NetBSD: ntfs_vfsops.c,v 1.94.2.1 2015/02/14 08:11:07 snj 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 1.94.2.1 2015/02/14 08:11:07 snj 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(void) 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 mountlist_append(mp); 122 (void)ntfs_statvfs(mp, &mp->mnt_stat); 123 vfs_unbusy(mp, false, NULL); 124 return (0); 125 } 126 127 static void 128 ntfs_init(void) 129 { 130 131 malloc_type_attach(M_NTFSMNT); 132 malloc_type_attach(M_NTFSNTNODE); 133 malloc_type_attach(M_NTFSFNODE); 134 malloc_type_attach(M_NTFSDIR); 135 malloc_type_attach(M_NTFSNTVATTR); 136 malloc_type_attach(M_NTFSRDATA); 137 malloc_type_attach(M_NTFSDECOMP); 138 malloc_type_attach(M_NTFSRUN); 139 ntfs_nthashinit(); 140 ntfs_toupper_init(); 141 } 142 143 static void 144 ntfs_reinit(void) 145 { 146 ntfs_nthashreinit(); 147 } 148 149 static void 150 ntfs_done(void) 151 { 152 ntfs_nthashdone(); 153 malloc_type_detach(M_NTFSMNT); 154 malloc_type_detach(M_NTFSNTNODE); 155 malloc_type_detach(M_NTFSFNODE); 156 malloc_type_detach(M_NTFSDIR); 157 malloc_type_detach(M_NTFSNTVATTR); 158 malloc_type_detach(M_NTFSRDATA); 159 malloc_type_detach(M_NTFSDECOMP); 160 malloc_type_detach(M_NTFSRUN); 161 } 162 163 static int 164 ntfs_mount ( 165 struct mount *mp, 166 const char *path, 167 void *data, 168 size_t *data_len) 169 { 170 struct lwp *l = curlwp; 171 int err = 0, flags; 172 struct vnode *devvp; 173 struct ntfs_args *args = data; 174 175 if (args == NULL) 176 return EINVAL; 177 if (*data_len < sizeof *args) 178 return EINVAL; 179 180 if (mp->mnt_flag & MNT_GETARGS) { 181 struct ntfsmount *ntmp = VFSTONTFS(mp); 182 if (ntmp == NULL) 183 return EIO; 184 args->fspec = NULL; 185 args->uid = ntmp->ntm_uid; 186 args->gid = ntmp->ntm_gid; 187 args->mode = ntmp->ntm_mode; 188 args->flag = ntmp->ntm_flag; 189 *data_len = sizeof *args; 190 return 0; 191 } 192 /* 193 *** 194 * Mounting non-root file system or updating a file system 195 *** 196 */ 197 198 /* 199 * If updating, check whether changing from read-only to 200 * read/write; if there is no device name, that's all we do. 201 */ 202 if (mp->mnt_flag & MNT_UPDATE) { 203 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 204 return (EINVAL); 205 } 206 207 /* 208 * Not an update, or updating the name: look up the name 209 * and verify that it refers to a sensible block device. 210 */ 211 err = namei_simple_user(args->fspec, 212 NSM_FOLLOW_NOEMULROOT, &devvp); 213 if (err) { 214 /* can't get devvp!*/ 215 return (err); 216 } 217 218 if (devvp->v_type != VBLK) { 219 err = ENOTBLK; 220 goto fail; 221 } 222 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 223 err = ENXIO; 224 goto fail; 225 } 226 if (mp->mnt_flag & MNT_UPDATE) { 227 #if 0 228 /* 229 ******************** 230 * UPDATE 231 ******************** 232 */ 233 234 if (devvp != ntmp->um_devvp) { 235 err = EINVAL; /* needs translation */ 236 goto fail; 237 } 238 239 /* 240 * Update device name only on success 241 */ 242 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 243 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 244 if (err) 245 goto fail; 246 247 vrele(devvp); 248 #endif 249 } else { 250 /* 251 ******************** 252 * NEW MOUNT 253 ******************** 254 */ 255 256 /* 257 * Since this is a new mount, we want the names for 258 * the device and the mount point copied in. If an 259 * error occurs, the mountpoint is discarded by the 260 * upper level code. 261 */ 262 263 /* Save "last mounted on" info for mount point (NULL pad)*/ 264 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 265 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 266 if (err) 267 goto fail; 268 269 if (mp->mnt_flag & MNT_RDONLY) 270 flags = FREAD; 271 else 272 flags = FREAD|FWRITE; 273 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 274 err = VOP_OPEN(devvp, flags, FSCRED); 275 VOP_UNLOCK(devvp); 276 if (err) 277 goto fail; 278 err = ntfs_mountfs(devvp, mp, args, l); 279 if (err) { 280 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 281 (void)VOP_CLOSE(devvp, flags, NOCRED); 282 VOP_UNLOCK(devvp); 283 goto fail; 284 } 285 } 286 287 /* 288 * Initialize FS stat information in mount struct; uses both 289 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 290 * 291 * This code is common to root and non-root mounts 292 */ 293 (void)VFS_STATVFS(mp, &mp->mnt_stat); 294 return (err); 295 296 fail: 297 vrele(devvp); 298 return (err); 299 } 300 301 /* 302 * Common code for mount and mountroot 303 */ 304 int 305 ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp, struct lwp *l) 306 { 307 struct buf *bp; 308 struct ntfsmount *ntmp; 309 dev_t dev = devvp->v_rdev; 310 int error, i; 311 struct vnode *vp; 312 313 ntmp = NULL; 314 315 /* 316 * Flush out any old buffers remaining from a previous use. 317 */ 318 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 319 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 320 VOP_UNLOCK(devvp); 321 if (error) 322 return (error); 323 324 bp = NULL; 325 326 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, 0, &bp); 327 if (error) 328 goto out; 329 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK|M_ZERO); 330 memcpy( &ntmp->ntm_bootfile, bp->b_data, sizeof(struct bootfile) ); 331 brelse( bp , 0 ); 332 bp = NULL; 333 334 /* Sanity checks. XXX: More checks are probably needed. */ 335 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 336 error = EINVAL; 337 dprintf(("ntfs_mountfs: invalid boot block\n")); 338 goto out; 339 } 340 if (ntmp->ntm_bps == 0) { 341 error = EINVAL; 342 dprintf(("ntfs_mountfs: invalid bytes per sector\n")); 343 goto out; 344 } 345 if (ntmp->ntm_spc == 0) { 346 error = EINVAL; 347 dprintf(("ntfs_mountfs: invalid sectors per cluster\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 spec_node_setmountedfs(devvp, 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 spec_node_setmountedfs(devvp, 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 spec_node_setmountedfs(ntmp->ntm_devvp, NULL); 545 546 error = vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 547 KASSERT(error == 0); 548 549 /* lock the device vnode before calling VOP_CLOSE() */ 550 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 551 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 552 NOCRED); 553 KASSERT(error == 0); 554 VOP_UNLOCK(ntmp->ntm_devvp); 555 556 vrele(ntmp->ntm_devvp); 557 558 /* free the toupper table, if this has been last mounted ntfs volume */ 559 ntfs_toupper_unuse(); 560 561 dprintf(("ntfs_umount: freeing memory...\n")); 562 mp->mnt_data = NULL; 563 mp->mnt_flag &= ~MNT_LOCAL; 564 free(ntmp->ntm_ad, M_NTFSMNT); 565 free(ntmp, M_NTFSMNT); 566 return (0); 567 } 568 569 static int 570 ntfs_root( 571 struct mount *mp, 572 struct vnode **vpp) 573 { 574 struct vnode *nvp; 575 int error = 0; 576 577 dprintf(("ntfs_root(): sysvn: %p\n", 578 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 579 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 580 if(error) { 581 printf("ntfs_root: VFS_VGET failed: %d\n",error); 582 return (error); 583 } 584 585 *vpp = nvp; 586 return (0); 587 } 588 589 int 590 ntfs_calccfree( 591 struct ntfsmount *ntmp, 592 cn_t *cfreep) 593 { 594 struct vnode *vp; 595 u_int8_t *tmp; 596 int j, error; 597 cn_t cfree = 0; 598 size_t bmsize, i; 599 600 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 601 602 bmsize = VTOF(vp)->f_size; 603 604 tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); 605 606 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 607 0, bmsize, tmp, NULL); 608 if (error) 609 goto out; 610 611 for(i=0;i<bmsize;i++) 612 for(j=0;j<8;j++) 613 if(~tmp[i] & (1 << j)) cfree++; 614 *cfreep = cfree; 615 616 out: 617 free(tmp, M_TEMP); 618 return(error); 619 } 620 621 static int 622 ntfs_statvfs( 623 struct mount *mp, 624 struct statvfs *sbp) 625 { 626 struct ntfsmount *ntmp = VFSTONTFS(mp); 627 u_int64_t mftallocated; 628 629 dprintf(("ntfs_statvfs():\n")); 630 631 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 632 633 sbp->f_bsize = ntmp->ntm_bps; 634 sbp->f_frsize = sbp->f_bsize; /* XXX */ 635 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 636 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 637 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 638 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 639 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 640 sbp->f_ffree; 641 sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ 642 sbp->f_flag = mp->mnt_flag; 643 copy_statvfs_info(sbp, mp); 644 return (0); 645 } 646 647 static int 648 ntfs_sync ( 649 struct mount *mp, 650 int waitfor, 651 kauth_cred_t cred) 652 { 653 /*dprintf(("ntfs_sync():\n"));*/ 654 return (0); 655 } 656 657 /*ARGSUSED*/ 658 static int 659 ntfs_fhtovp( 660 struct mount *mp, 661 struct fid *fhp, 662 struct vnode **vpp) 663 { 664 struct ntfid ntfh; 665 int error; 666 667 if (fhp->fid_len != sizeof(struct ntfid)) 668 return EINVAL; 669 memcpy(&ntfh, fhp, sizeof(ntfh)); 670 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 671 (unsigned long long)ntfh.ntfid_ino)); 672 673 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, NULL, 674 LK_EXCLUSIVE, 0, vpp); 675 if (error != 0) { 676 *vpp = NULLVP; 677 return (error); 678 } 679 680 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 681 * with NTFS, we don't need to check anything else for now */ 682 return (0); 683 } 684 685 static int 686 ntfs_vptofh( 687 struct vnode *vp, 688 struct fid *fhp, 689 size_t *fh_size) 690 { 691 struct ntnode *ntp; 692 struct ntfid ntfh; 693 struct fnode *fn; 694 695 if (*fh_size < sizeof(struct ntfid)) { 696 *fh_size = sizeof(struct ntfid); 697 return E2BIG; 698 } 699 *fh_size = sizeof(struct ntfid); 700 701 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 702 vp)); 703 704 fn = VTOF(vp); 705 ntp = VTONT(vp); 706 memset(&ntfh, 0, sizeof(ntfh)); 707 ntfh.ntfid_len = sizeof(struct ntfid); 708 ntfh.ntfid_ino = ntp->i_number; 709 ntfh.ntfid_attr = fn->f_attrtype; 710 #ifdef notyet 711 ntfh.ntfid_gen = ntp->i_gen; 712 #endif 713 memcpy(fhp, &ntfh, sizeof(ntfh)); 714 return (0); 715 } 716 717 int 718 ntfs_vgetex( 719 struct mount *mp, 720 ino_t ino, 721 u_int32_t attrtype, 722 char *attrname, 723 u_long lkflags, 724 u_long flags, 725 struct vnode **vpp) 726 { 727 int error; 728 struct ntfsmount *ntmp; 729 struct ntnode *ip; 730 struct fnode *fp; 731 struct vnode *vp; 732 enum vtype f_type = VBAD; 733 734 dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:" 735 " 0x%lx\n", (unsigned long long)ino, attrtype, 736 attrname ? attrname : "", (u_long)lkflags, (u_long)flags)); 737 738 ntmp = VFSTONTFS(mp); 739 *vpp = NULL; 740 741 loop: 742 /* Get ntnode */ 743 error = ntfs_ntlookup(ntmp, ino, &ip); 744 if (error) { 745 printf("ntfs_vget: ntfs_ntget failed\n"); 746 return (error); 747 } 748 749 /* It may be not initialized fully, so force load it */ 750 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 751 error = ntfs_loadntnode(ntmp, ip); 752 if(error) { 753 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:" 754 " %llu\n", (unsigned long long)ip->i_number); 755 ntfs_ntput(ip); 756 return (error); 757 } 758 } 759 760 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 761 if (error) { 762 printf("ntfs_vget: ntfs_fget failed\n"); 763 ntfs_ntput(ip); 764 return (error); 765 } 766 767 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 768 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 769 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 770 f_type = VDIR; 771 } else if (flags & VG_EXT) { 772 f_type = VNON; 773 fp->f_size = fp->f_allocated = 0; 774 } else { 775 f_type = VREG; 776 777 error = ntfs_filesize(ntmp, fp, 778 &fp->f_size, &fp->f_allocated); 779 if (error) { 780 ntfs_ntput(ip); 781 return (error); 782 } 783 } 784 785 fp->f_flag |= FN_VALID; 786 } 787 788 /* 789 * We may be calling vget() now. To avoid potential deadlock, we need 790 * to release ntnode lock, since due to locking order vnode 791 * lock has to be acquired first. 792 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 793 * prematurely. 794 * Take v_interlock before releasing ntnode lock to avoid races. 795 */ 796 vp = FTOV(fp); 797 if (vp) { 798 mutex_enter(vp->v_interlock); 799 ntfs_ntput(ip); 800 if (vget(vp, lkflags) != 0) 801 goto loop; 802 *vpp = vp; 803 return 0; 804 } 805 ntfs_ntput(ip); 806 807 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, 808 NULL, &vp); 809 if(error) { 810 ntfs_frele(fp); 811 return (error); 812 } 813 ntfs_ntget(ip); 814 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 815 if (error) { 816 printf("ntfs_vget: ntfs_fget failed\n"); 817 ntfs_ntput(ip); 818 return (error); 819 } 820 if (FTOV(fp)) { 821 /* 822 * Another thread beat us, put back freshly allocated 823 * vnode and retry. 824 */ 825 ntfs_ntput(ip); 826 ungetnewvnode(vp); 827 goto loop; 828 } 829 dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp, 830 (unsigned long long)ino)); 831 832 fp->f_vp = vp; 833 vp->v_data = fp; 834 if (f_type != VBAD) 835 vp->v_type = f_type; 836 genfs_node_init(vp, &ntfs_genfsops); 837 838 if (ino == NTFS_ROOTINO) 839 vp->v_vflag |= VV_ROOT; 840 841 ntfs_ntput(ip); 842 843 if (lkflags & (LK_EXCLUSIVE | LK_SHARED)) { 844 error = vn_lock(vp, lkflags); 845 if (error) { 846 vput(vp); 847 return (error); 848 } 849 } 850 851 uvm_vnp_setsize(vp, fp->f_size); /* XXX: mess, cf. ntfs_lookupfile() */ 852 vref(ip->i_devvp); 853 *vpp = vp; 854 return (0); 855 } 856 857 static int 858 ntfs_vget( 859 struct mount *mp, 860 ino_t ino, 861 struct vnode **vpp) 862 { 863 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, LK_EXCLUSIVE, 0, vpp); 864 } 865 866 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 867 868 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 869 &ntfs_vnodeop_opv_desc, 870 NULL, 871 }; 872 873 struct vfsops ntfs_vfsops = { 874 .vfs_name = MOUNT_NTFS, 875 .vfs_min_mount_data = sizeof (struct ntfs_args), 876 .vfs_mount = ntfs_mount, 877 .vfs_start = ntfs_start, 878 .vfs_unmount = ntfs_unmount, 879 .vfs_root = ntfs_root, 880 .vfs_quotactl = (void *)eopnotsupp, 881 .vfs_statvfs = ntfs_statvfs, 882 .vfs_sync = ntfs_sync, 883 .vfs_vget = ntfs_vget, 884 .vfs_fhtovp = ntfs_fhtovp, 885 .vfs_vptofh = ntfs_vptofh, 886 .vfs_init = ntfs_init, 887 .vfs_reinit = ntfs_reinit, 888 .vfs_done = ntfs_done, 889 .vfs_mountroot = ntfs_mountroot, 890 .vfs_snapshot = (void *)eopnotsupp, 891 .vfs_extattrctl = vfs_stdextattrctl, 892 .vfs_suspendctl = (void *)eopnotsupp, 893 .vfs_renamelock_enter = genfs_renamelock_enter, 894 .vfs_renamelock_exit = genfs_renamelock_exit, 895 .vfs_fsync = (void *)eopnotsupp, 896 .vfs_opv_descs = ntfs_vnodeopv_descs 897 }; 898 899 static int 900 ntfs_modcmd(modcmd_t cmd, void *arg) 901 { 902 int error; 903 904 switch (cmd) { 905 case MODULE_CMD_INIT: 906 error = vfs_attach(&ntfs_vfsops); 907 if (error != 0) 908 break; 909 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 910 CTLFLAG_PERMANENT, 911 CTLTYPE_NODE, "ntfs", 912 SYSCTL_DESCR("NTFS file system"), 913 NULL, 0, NULL, 0, 914 CTL_VFS, 20, CTL_EOL); 915 /* 916 * XXX the "20" above could be dynamic, thereby eliminating 917 * one more instance of the "number to vfs" mapping problem, 918 * but "20" is the order as taken from sys/mount.h 919 */ 920 break; 921 case MODULE_CMD_FINI: 922 error = vfs_detach(&ntfs_vfsops); 923 if (error != 0) 924 break; 925 sysctl_teardown(&ntfs_sysctl_log); 926 break; 927 default: 928 error = ENOTTY; 929 break; 930 } 931 932 return (error); 933 } 934
Indexes created Wed Oct 01 19:09:53 GMT 2025