ntfs_vfsops.c revision 1.107.2.1
1 /* $NetBSD: ntfs_vfsops.c,v 1.107.2.1 2017/04/27 05:36:37 pgoyette 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 1.107.2.1 2017/04/27 05:36:37 pgoyette 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_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 67 68 static int ntfs_superblock_validate(struct ntfsmount *); 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_loadvnode(struct mount *, struct vnode *, 78 const void *, size_t, const void **); 79 static int ntfs_mountfs(struct vnode *, struct mount *, 80 struct ntfs_args *, struct lwp *); 81 static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); 82 83 static void ntfs_init(void); 84 static void ntfs_reinit(void); 85 static void ntfs_done(void); 86 static int ntfs_fhtovp(struct mount *, struct fid *, 87 struct vnode **); 88 static int ntfs_mountroot(void); 89 90 static const struct genfs_ops ntfs_genfsops = { 91 .gop_write = genfs_compat_gop_write, 92 }; 93 94 static struct sysctllog *ntfs_sysctl_log; 95 96 static int 97 ntfs_mountroot(void) 98 { 99 struct mount *mp; 100 struct lwp *l = curlwp; /* XXX */ 101 int error; 102 struct ntfs_args args; 103 104 if (device_class(root_device) != DV_DISK) 105 return (ENODEV); 106 107 if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { 108 vrele(rootvp); 109 return (error); 110 } 111 112 args.flag = 0; 113 args.uid = 0; 114 args.gid = 0; 115 args.mode = 0777; 116 117 if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { 118 vfs_unbusy(mp); 119 vfs_rele(mp); 120 return (error); 121 } 122 123 mountlist_append(mp); 124 (void)ntfs_statvfs(mp, &mp->mnt_stat); 125 vfs_unbusy(mp); 126 return (0); 127 } 128 129 static void 130 ntfs_init(void) 131 { 132 133 malloc_type_attach(M_NTFSMNT); 134 malloc_type_attach(M_NTFSNTNODE); 135 malloc_type_attach(M_NTFSDIR); 136 malloc_type_attach(M_NTFSNTVATTR); 137 malloc_type_attach(M_NTFSRDATA); 138 malloc_type_attach(M_NTFSDECOMP); 139 malloc_type_attach(M_NTFSRUN); 140 ntfs_nthashinit(); 141 ntfs_toupper_init(); 142 } 143 144 static void 145 ntfs_reinit(void) 146 { 147 ntfs_nthashreinit(); 148 } 149 150 static void 151 ntfs_done(void) 152 { 153 ntfs_nthashdone(); 154 malloc_type_detach(M_NTFSMNT); 155 malloc_type_detach(M_NTFSNTNODE); 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(struct mount *mp, const char *path, void *data, size_t *data_len) 165 { 166 struct lwp *l = curlwp; 167 int err = 0, flags; 168 struct vnode *devvp; 169 struct ntfs_args *args = data; 170 const struct bdevsw *bdev = NULL; 171 172 if (args == NULL) 173 return EINVAL; 174 if (*data_len < sizeof *args) 175 return EINVAL; 176 177 if (mp->mnt_flag & MNT_GETARGS) { 178 struct ntfsmount *ntmp = VFSTONTFS(mp); 179 if (ntmp == NULL) 180 return EIO; 181 args->fspec = NULL; 182 args->uid = ntmp->ntm_uid; 183 args->gid = ntmp->ntm_gid; 184 args->mode = ntmp->ntm_mode; 185 args->flag = ntmp->ntm_flag; 186 *data_len = sizeof *args; 187 return 0; 188 } 189 /* 190 *** 191 * Mounting non-root file system or updating a file system 192 *** 193 */ 194 195 /* 196 * If updating, check whether changing from read-only to 197 * read/write; if there is no device name, that's all we do. 198 */ 199 if (mp->mnt_flag & MNT_UPDATE) { 200 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 201 return (EINVAL); 202 } 203 204 /* 205 * Not an update, or updating the name: look up the name 206 * and verify that it refers to a sensible block device. 207 */ 208 err = namei_simple_user(args->fspec, 209 NSM_FOLLOW_NOEMULROOT, &devvp); 210 if (err) 211 return (err); 212 213 if (devvp->v_type != VBLK) { 214 err = ENOTBLK; 215 goto fail; 216 } 217 if ((bdev = bdevsw_lookup_acquire(devvp->v_rdev)) == NULL) { 218 err = ENXIO; 219 goto fail; 220 } 221 if (mp->mnt_flag & MNT_UPDATE) { 222 #if 0 223 /* 224 ******************** 225 * UPDATE 226 ******************** 227 */ 228 229 if (devvp != ntmp->um_devvp) { 230 err = EINVAL; /* needs translation */ 231 goto fail; 232 } 233 234 /* 235 * Update device name only on success 236 */ 237 err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, 238 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); 239 if (err) 240 goto fail; 241 242 vrele(devvp); 243 #endif 244 } else { 245 /* 246 ******************** 247 * NEW MOUNT 248 ******************** 249 */ 250 251 /* 252 * Since this is a new mount, we want the names for 253 * the device and the mount point copied in. If an 254 * error occurs, the mountpoint is discarded by the 255 * upper level code. 256 */ 257 258 /* Save "last mounted on" info for mount point (NULL pad)*/ 259 err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 260 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 261 if (err) 262 goto fail; 263 264 if (mp->mnt_flag & MNT_RDONLY) 265 flags = FREAD; 266 else 267 flags = FREAD|FWRITE; 268 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 269 err = VOP_OPEN(devvp, flags, FSCRED); 270 VOP_UNLOCK(devvp); 271 if (err) 272 goto fail; 273 err = ntfs_mountfs(devvp, mp, args, l); 274 if (err) { 275 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 276 (void)VOP_CLOSE(devvp, flags, NOCRED); 277 VOP_UNLOCK(devvp); 278 goto fail; 279 } 280 } 281 282 /* 283 * Initialize FS stat information in mount struct; uses both 284 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 285 * 286 * This code is common to root and non-root mounts 287 */ 288 (void)VFS_STATVFS(mp, &mp->mnt_stat); 289 if (bdev != NULL) 290 bdevsw_release(bdev); 291 return (err); 292 293 fail: 294 vrele(devvp); 295 if (bdev != NULL) 296 bdevsw_release(bdev); 297 return (err); 298 } 299 300 static int 301 ntfs_superblock_validate(struct ntfsmount *ntmp) 302 { 303 /* Sanity checks. XXX: More checks are probably needed. */ 304 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 305 dprintf(("ntfs_superblock_validate: invalid boot block\n")); 306 return EINVAL; 307 } 308 if (ntmp->ntm_bps == 0) { 309 dprintf(("ntfs_superblock_validate: invalid bytes per sector\n")); 310 return EINVAL; 311 } 312 if (ntmp->ntm_spc == 0) { 313 dprintf(("ntfs_superblock_validate: invalid sectors per cluster\n")); 314 return EINVAL; 315 } 316 return 0; 317 } 318 319 /* 320 * Common code for mount and mountroot 321 */ 322 int 323 ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp, struct lwp *l) 324 { 325 struct buf *bp; 326 struct ntfsmount *ntmp; 327 dev_t dev = devvp->v_rdev; 328 int error, i; 329 struct vnode *vp; 330 331 ntmp = NULL; 332 333 /* 334 * Flush out any old buffers remaining from a previous use. 335 */ 336 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 337 error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); 338 VOP_UNLOCK(devvp); 339 if (error) 340 return (error); 341 342 bp = NULL; 343 344 error = bread(devvp, BBLOCK, BBSIZE, 0, &bp); 345 if (error) 346 goto out; 347 ntmp = malloc(sizeof(*ntmp), M_NTFSMNT, M_WAITOK|M_ZERO); 348 memcpy(&ntmp->ntm_bootfile, bp->b_data, sizeof(struct bootfile)); 349 brelse(bp, 0); 350 bp = NULL; 351 352 if ((error = ntfs_superblock_validate(ntmp))) 353 goto out; 354 355 { 356 int8_t cpr = ntmp->ntm_mftrecsz; 357 if (cpr > 0) 358 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 359 else 360 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 361 } 362 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 363 ntmp->ntm_bps, ntmp->ntm_spc, ntmp->ntm_bootfile.bf_media, 364 ntmp->ntm_mftrecsz, ntmp->ntm_bpmftrec)); 365 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 366 (u_int32_t)ntmp->ntm_mftcn, (u_int32_t)ntmp->ntm_mftmirrcn)); 367 368 ntmp->ntm_mountp = mp; 369 ntmp->ntm_dev = dev; 370 ntmp->ntm_devvp = devvp; 371 ntmp->ntm_uid = argsp->uid; 372 ntmp->ntm_gid = argsp->gid; 373 ntmp->ntm_mode = argsp->mode; 374 ntmp->ntm_flag = argsp->flag; 375 mp->mnt_data = ntmp; 376 377 /* set file name encode/decode hooks XXX utf-8 only for now */ 378 ntmp->ntm_wget = ntfs_utf8_wget; 379 ntmp->ntm_wput = ntfs_utf8_wput; 380 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 381 382 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 383 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 384 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 385 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 386 387 /* 388 * We read in some system nodes to do not allow 389 * reclaim them and to have everytime access to them. 390 */ 391 { 392 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 393 for (i = 0; i < 3; i++) { 394 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 395 if (error) 396 goto out1; 397 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 398 vref(ntmp->ntm_sysvn[pi[i]]); 399 vput(ntmp->ntm_sysvn[pi[i]]); 400 } 401 } 402 403 /* read the Unicode lowercase --> uppercase translation table, 404 * if necessary */ 405 if ((error = ntfs_toupper_use(mp, ntmp))) 406 goto out1; 407 408 /* 409 * Scan $BitMap and count free clusters 410 */ 411 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 412 if (error) 413 goto out1; 414 415 /* 416 * Read and translate to internal format attribute 417 * definition file. 418 */ 419 { 420 int num,j; 421 struct attrdef ad; 422 423 /* Open $AttrDef */ 424 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp); 425 if (error) 426 goto out1; 427 428 /* Count valid entries */ 429 for (num = 0; ; num++) { 430 error = ntfs_readattr(ntmp, VTONT(vp), 431 NTFS_A_DATA, NULL, 432 num * sizeof(ad), sizeof(ad), 433 &ad, NULL); 434 if (error) 435 goto out1; 436 if (ad.ad_name[0] == 0) 437 break; 438 } 439 440 /* Alloc memory for attribute definitions */ 441 ntmp->ntm_ad = (struct ntvattrdef *) malloc( 442 num * sizeof(struct ntvattrdef), 443 M_NTFSMNT, M_WAITOK); 444 445 ntmp->ntm_adnum = num; 446 447 /* Read them and translate */ 448 for (i = 0; i < num; i++) { 449 error = ntfs_readattr(ntmp, VTONT(vp), 450 NTFS_A_DATA, NULL, 451 i * sizeof(ad), sizeof(ad), 452 &ad, NULL); 453 if (error) 454 goto out1; 455 j = 0; 456 do { 457 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 458 } while(ad.ad_name[j++]); 459 ntmp->ntm_ad[i].ad_namelen = j - 1; 460 ntmp->ntm_ad[i].ad_type = ad.ad_type; 461 } 462 463 vput(vp); 464 } 465 466 mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; 467 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); 468 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 469 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 470 mp->mnt_flag |= MNT_LOCAL; 471 spec_node_setmountedfs(devvp, mp); 472 return (0); 473 474 out1: 475 for (i = 0; i < NTFS_SYSNODESNUM; i++) 476 if (ntmp->ntm_sysvn[i]) 477 vrele(ntmp->ntm_sysvn[i]); 478 479 if (vflush(mp, NULLVP, 0)) { 480 dprintf(("ntfs_mountfs: vflush failed\n")); 481 } 482 out: 483 spec_node_setmountedfs(devvp, NULL); 484 if (bp) 485 brelse(bp, 0); 486 487 if (error) { 488 if (ntmp) { 489 if (ntmp->ntm_ad) 490 free(ntmp->ntm_ad, M_NTFSMNT); 491 free(ntmp, M_NTFSMNT); 492 } 493 } 494 495 return (error); 496 } 497 498 static int 499 ntfs_start(struct mount *mp, int flags) 500 { 501 return (0); 502 } 503 504 static int 505 ntfs_unmount(struct mount *mp, int mntflags) 506 { 507 struct lwp *l = curlwp; 508 struct ntfsmount *ntmp; 509 int error, ronly = 0, flags, i; 510 511 dprintf(("ntfs_unmount: unmounting...\n")); 512 ntmp = VFSTONTFS(mp); 513 514 flags = 0; 515 if (mntflags & MNT_FORCE) 516 flags |= FORCECLOSE; 517 518 dprintf(("ntfs_unmount: vflushing...\n")); 519 error = vflush(mp, NULLVP, flags | SKIPSYSTEM); 520 if (error) { 521 dprintf(("ntfs_unmount: vflush failed: %d\n",error)); 522 return (error); 523 } 524 525 /* Check if only system vnodes are rest */ 526 for (i = 0; i < NTFS_SYSNODESNUM; i++) 527 if ((ntmp->ntm_sysvn[i]) && 528 (ntmp->ntm_sysvn[i]->v_usecount > 1)) 529 return (EBUSY); 530 531 /* Dereference all system vnodes */ 532 for (i = 0; i < NTFS_SYSNODESNUM; i++) 533 if (ntmp->ntm_sysvn[i]) 534 vrele(ntmp->ntm_sysvn[i]); 535 536 /* vflush system vnodes */ 537 error = vflush(mp, NULLVP, flags); 538 if (error) { 539 panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 540 } 541 542 /* Check if the type of device node isn't VBAD before 543 * touching v_specinfo. If the device vnode is revoked, the 544 * field is NULL and touching it causes null pointer derefercence. 545 */ 546 if (ntmp->ntm_devvp->v_type != VBAD) 547 spec_node_setmountedfs(ntmp->ntm_devvp, NULL); 548 549 error = vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); 550 KASSERT(error == 0); 551 552 /* lock the device vnode before calling VOP_CLOSE() */ 553 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 554 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, 555 NOCRED); 556 KASSERT(error == 0); 557 VOP_UNLOCK(ntmp->ntm_devvp); 558 559 vrele(ntmp->ntm_devvp); 560 561 /* free the toupper table, if this has been last mounted ntfs volume */ 562 ntfs_toupper_unuse(); 563 564 dprintf(("ntfs_umount: freeing memory...\n")); 565 mp->mnt_data = NULL; 566 mp->mnt_flag &= ~MNT_LOCAL; 567 free(ntmp->ntm_ad, M_NTFSMNT); 568 free(ntmp, M_NTFSMNT); 569 return (0); 570 } 571 572 static int 573 ntfs_root(struct mount *mp, struct vnode **vpp) 574 { 575 struct vnode *nvp; 576 int error = 0; 577 578 dprintf(("ntfs_root(): sysvn: %p\n", 579 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 580 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 581 if (error) { 582 printf("ntfs_root: VFS_VGET failed: %d\n", error); 583 return (error); 584 } 585 586 *vpp = nvp; 587 return (0); 588 } 589 590 int 591 ntfs_calccfree(struct ntfsmount *ntmp, 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 bmsize = VTOF(vp)->f_size; 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)) 611 cfree++; 612 *cfreep = cfree; 613 614 out: 615 free(tmp, M_TEMP); 616 return(error); 617 } 618 619 static int 620 ntfs_statvfs(struct mount *mp, 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(struct mount *mp, int waitfor, kauth_cred_t cred) 645 { 646 /*dprintf(("ntfs_sync():\n"));*/ 647 return (0); 648 } 649 650 /*ARGSUSED*/ 651 static int 652 ntfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 653 { 654 struct ntfid ntfh; 655 int error; 656 657 if (fhp->fid_len != sizeof(struct ntfid)) 658 return EINVAL; 659 memcpy(&ntfh, fhp, sizeof(ntfh)); 660 ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, 661 (unsigned long long)ntfh.ntfid_ino)); 662 663 error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, "", 664 LK_EXCLUSIVE, vpp); 665 if (error != 0) { 666 *vpp = NULLVP; 667 return (error); 668 } 669 670 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 671 * with NTFS, we don't need to check anything else for now */ 672 return (0); 673 } 674 675 static int 676 ntfs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 677 { 678 struct ntnode *ntp; 679 struct ntfid ntfh; 680 struct fnode *fn; 681 682 if (*fh_size < sizeof(struct ntfid)) { 683 *fh_size = sizeof(struct ntfid); 684 return E2BIG; 685 } 686 *fh_size = sizeof(struct ntfid); 687 688 ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, 689 vp)); 690 691 fn = VTOF(vp); 692 ntp = VTONT(vp); 693 memset(&ntfh, 0, sizeof(ntfh)); 694 ntfh.ntfid_len = sizeof(struct ntfid); 695 ntfh.ntfid_ino = ntp->i_number; 696 ntfh.ntfid_attr = fn->f_attrtype; 697 #ifdef notyet 698 ntfh.ntfid_gen = ntp->i_gen; 699 #endif 700 memcpy(fhp, &ntfh, sizeof(ntfh)); 701 return (0); 702 } 703 704 static int 705 ntfs_loadvnode(struct mount *mp, struct vnode *vp, 706 const void *key, size_t key_len, const void **new_key) 707 { 708 int error; 709 struct ntvattr *vap; 710 struct ntkey small_key, *ntkey; 711 struct ntfsmount *ntmp; 712 struct ntnode *ip; 713 struct fnode *fp = NULL; 714 enum vtype f_type = VBAD; 715 716 if (key_len <= sizeof(small_key)) 717 ntkey = &small_key; 718 else 719 ntkey = kmem_alloc(key_len, KM_SLEEP); 720 memcpy(ntkey, key, key_len); 721 722 dprintf(("ntfs_loadvnode: ino: %llu, attr: 0x%x:%s", 723 (unsigned long long)ntkey->k_ino, 724 ntkey->k_attrtype, ntkey->k_attrname)); 725 726 ntmp = VFSTONTFS(mp); 727 728 /* Get ntnode */ 729 error = ntfs_ntlookup(ntmp, ntkey->k_ino, &ip); 730 if (error) { 731 printf("ntfs_loadvnode: ntfs_ntget failed\n"); 732 goto out; 733 } 734 /* It may be not initialized fully, so force load it */ 735 if (!(ip->i_flag & IN_LOADED)) { 736 error = ntfs_loadntnode(ntmp, ip); 737 if (error) { 738 printf("ntfs_loadvnode: CAN'T LOAD ATTRIBUTES FOR INO:" 739 " %llu\n", (unsigned long long)ip->i_number); 740 ntfs_ntput(ip); 741 goto out; 742 } 743 } 744 745 /* Setup fnode */ 746 fp = kmem_zalloc(sizeof(*fp), KM_SLEEP); 747 dprintf(("%s: allocating fnode: %p\n", __func__, fp)); 748 749 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); 750 if (error) { 751 printf("%s: attr %x for ino %" PRId64 ": error %d\n", 752 __func__, NTFS_A_NAME, ip->i_number, error); 753 ntfs_ntput(ip); 754 goto out; 755 } 756 fp->f_fflag = vap->va_a_name->n_flag; 757 fp->f_pnumber = vap->va_a_name->n_pnumber; 758 fp->f_times = vap->va_a_name->n_times; 759 ntfs_ntvattrrele(vap); 760 761 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 762 (ntkey->k_attrtype == NTFS_A_DATA && 763 strcmp(ntkey->k_attrname, "") == 0)) { 764 f_type = VDIR; 765 } else { 766 f_type = VREG; 767 error = ntfs_ntvattrget(ntmp, ip, 768 ntkey->k_attrtype, ntkey->k_attrname, 0, &vap); 769 if (error == 0) { 770 fp->f_size = vap->va_datalen; 771 fp->f_allocated = vap->va_allocated; 772 ntfs_ntvattrrele(vap); 773 } else if (ntkey->k_attrtype == NTFS_A_DATA && 774 strcmp(ntkey->k_attrname, "") == 0 && 775 error == ENOENT) { 776 fp->f_size = 0; 777 fp->f_allocated = 0; 778 error = 0; 779 } else { 780 printf("%s: attr %x for ino %" PRId64 ": error %d\n", 781 __func__, ntkey->k_attrtype, ip->i_number, error); 782 ntfs_ntput(ip); 783 goto out; 784 } 785 } 786 787 if (key_len <= sizeof(fp->f_smallkey)) 788 fp->f_key = &fp->f_smallkey; 789 else 790 fp->f_key = kmem_alloc(key_len, KM_SLEEP); 791 fp->f_ip = ip; 792 fp->f_ino = ip->i_number; 793 strcpy(fp->f_attrname, ntkey->k_attrname); 794 fp->f_attrtype = ntkey->k_attrtype; 795 fp->f_vp = vp; 796 vp->v_data = fp; 797 798 vp->v_tag = VT_NTFS; 799 vp->v_type = f_type; 800 vp->v_op = ntfs_vnodeop_p; 801 ntfs_ntref(ip); 802 vref(ip->i_devvp); 803 genfs_node_init(vp, &ntfs_genfsops); 804 805 if (ip->i_number == NTFS_ROOTINO) 806 vp->v_vflag |= VV_ROOT; 807 808 uvm_vnp_setsize(vp, fp->f_size); 809 ntfs_ntput(ip); 810 811 *new_key = fp->f_key; 812 813 fp = NULL; 814 815 out: 816 if (ntkey != &small_key) 817 kmem_free(ntkey, key_len); 818 if (fp) 819 kmem_free(fp, sizeof(*fp)); 820 821 return error; 822 } 823 824 static int 825 ntfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 826 { 827 return ntfs_vgetex(mp, ino, NTFS_A_DATA, "", LK_EXCLUSIVE, vpp); 828 } 829 830 int 831 ntfs_vgetex(struct mount *mp, ino_t ino, u_int32_t attrtype, 832 const char *attrname, u_long lkflags, struct vnode **vpp) 833 { 834 const int attrlen = strlen(attrname); 835 int error; 836 struct ntkey small_key, *ntkey; 837 838 if (NTKEY_SIZE(attrlen) <= sizeof(small_key)) 839 ntkey = &small_key; 840 else 841 ntkey = malloc(NTKEY_SIZE(attrlen), M_TEMP, M_WAITOK); 842 ntkey->k_ino = ino; 843 ntkey->k_attrtype = attrtype; 844 strcpy(ntkey->k_attrname, attrname); 845 846 error = vcache_get(mp, ntkey, NTKEY_SIZE(attrlen), vpp); 847 if (error) 848 goto out; 849 850 if ((lkflags & (LK_SHARED | LK_EXCLUSIVE)) != 0) { 851 error = vn_lock(*vpp, lkflags); 852 if (error) { 853 vrele(*vpp); 854 *vpp = NULL; 855 } 856 } 857 858 out: 859 if (ntkey != &small_key) 860 free(ntkey, M_TEMP); 861 return error; 862 } 863 864 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; 865 866 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { 867 &ntfs_vnodeop_opv_desc, 868 NULL, 869 }; 870 871 struct vfsops ntfs_vfsops = { 872 .vfs_name = MOUNT_NTFS, 873 .vfs_min_mount_data = sizeof (struct ntfs_args), 874 .vfs_mount = ntfs_mount, 875 .vfs_start = ntfs_start, 876 .vfs_unmount = ntfs_unmount, 877 .vfs_root = ntfs_root, 878 .vfs_quotactl = (void *)eopnotsupp, 879 .vfs_statvfs = ntfs_statvfs, 880 .vfs_sync = ntfs_sync, 881 .vfs_vget = ntfs_vget, 882 .vfs_loadvnode = ntfs_loadvnode, 883 .vfs_fhtovp = ntfs_fhtovp, 884 .vfs_vptofh = ntfs_vptofh, 885 .vfs_init = ntfs_init, 886 .vfs_reinit = ntfs_reinit, 887 .vfs_done = ntfs_done, 888 .vfs_mountroot = ntfs_mountroot, 889 .vfs_snapshot = (void *)eopnotsupp, 890 .vfs_extattrctl = vfs_stdextattrctl, 891 .vfs_suspendctl = genfs_suspendctl, 892 .vfs_renamelock_enter = genfs_renamelock_enter, 893 .vfs_renamelock_exit = genfs_renamelock_exit, 894 .vfs_fsync = (void *)eopnotsupp, 895 .vfs_opv_descs = ntfs_vnodeopv_descs 896 }; 897 898 static int 899 ntfs_modcmd(modcmd_t cmd, void *arg) 900 { 901 int error; 902 903 switch (cmd) { 904 case MODULE_CMD_INIT: 905 error = vfs_attach(&ntfs_vfsops); 906 if (error != 0) 907 break; 908 sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, 909 CTLFLAG_PERMANENT, 910 CTLTYPE_NODE, "ntfs", 911 SYSCTL_DESCR("NTFS file system"), 912 NULL, 0, NULL, 0, 913 CTL_VFS, 20, CTL_EOL); 914 /* 915 * XXX the "20" above could be dynamic, thereby eliminating 916 * one more instance of the "number to vfs" mapping problem, 917 * but "20" is the order as taken from sys/mount.h 918 */ 919 break; 920 case MODULE_CMD_FINI: 921 error = vfs_detach(&ntfs_vfsops); 922 if (error != 0) 923 break; 924 sysctl_teardown(&ntfs_sysctl_log); 925 break; 926 default: 927 error = ENOTTY; 928 break; 929 } 930 931 return (error); 932 } 933
Indexes created Wed Oct 01 19:09:53 GMT 2025