1 /* $NetBSD: ntfs_vfsops.c,v 1.23 1999/11/15 19:38:14 jdolecek 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 * $FreeBSD: src/sys/ntfs/ntfs_subr.c,v 1.7.2.4 2001/10/12 22:08:49 semenu Exp $ 29 */ 30 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/conf.h> 35 #include <sys/proc.h> 36 #include <sys/nlookup.h> 37 #include <sys/kernel.h> 38 #include <sys/vnode.h> 39 #include <sys/mount.h> 40 #include <sys/buf.h> 41 #include <sys/fcntl.h> 42 #include <sys/malloc.h> 43 44 #include <machine/inttypes.h> 45 46 #include <vm/vm.h> 47 #include <vm/vm_param.h> 48 #include <vm/vm_page.h> 49 #include <vm/vm_object.h> 50 #include <vm/vm_extern.h> 51 #include <vm/vm_zone.h> 52 53 #include <sys/buf2.h> 54 55 #include "ntfs.h" 56 #include "ntfs_inode.h" 57 #include "ntfs_subr.h" 58 #include "ntfs_vfsops.h" 59 #include "ntfs_ihash.h" 60 #include "ntfsmount.h" 61 62 extern struct vop_ops ntfs_vnode_vops; 63 64 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); 65 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); 66 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); 67 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); 68 69 struct iconv_functions *ntfs_iconv = NULL; 70 71 static int ntfs_root (struct mount *, struct vnode **); 72 static int ntfs_statfs (struct mount *, struct statfs *, 73 struct ucred *cred); 74 static int ntfs_statvfs (struct mount *, struct statvfs *, 75 struct ucred *); 76 static int ntfs_unmount (struct mount *, int); 77 static int ntfs_vget (struct mount *mp, struct vnode *dvp, 78 ino_t ino, struct vnode **vpp); 79 static int ntfs_mountfs (struct vnode *, struct mount *, 80 struct ntfs_args *, struct ucred *); 81 static int ntfs_vptofh (struct vnode *, struct fid *); 82 static int ntfs_fhtovp (struct mount *, struct vnode *rootvp, 83 struct fid *, struct vnode **); 84 85 struct sockaddr; 86 static int ntfs_mount (struct mount *, char *, caddr_t, struct ucred *); 87 static int ntfs_init (struct vfsconf *); 88 static int ntfs_checkexp (struct mount *, struct sockaddr *, 89 int *, struct ucred **); 90 /* 91 * Verify a remote client has export rights and return these rights via. 92 * exflagsp and credanonp. 93 */ 94 static int 95 ntfs_checkexp(struct mount *mp, struct sockaddr *nam, 96 int *exflagsp, struct ucred **credanonp) 97 { 98 struct netcred *np; 99 struct ntfsmount *ntm = VFSTONTFS(mp); 100 101 /* 102 * Get the export permission structure for this <mp, client> tuple. 103 */ 104 np = vfs_export_lookup(mp, &ntm->ntm_export, nam); 105 if (np == NULL) 106 return (EACCES); 107 108 *exflagsp = np->netc_exflags; 109 *credanonp = &np->netc_anon; 110 return (0); 111 } 112 113 static int 114 ntfs_init(struct vfsconf *vcp) 115 { 116 ntfs_nthashinit(); 117 ntfs_toupper_init(); 118 return 0; 119 } 120 121 static int 122 ntfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred) 123 { 124 size_t size; 125 int error; 126 struct vnode *devvp; 127 struct ntfs_args args; 128 struct nlookupdata nd; 129 struct vnode *rootvp; 130 131 error = 0; 132 /* 133 * Use NULL path to flag a root mount 134 */ 135 if( path == NULL) { 136 /* 137 *** 138 * Mounting root file system 139 *** 140 */ 141 142 /* Get vnode for root device*/ 143 if( bdevvp( rootdev, &rootvp)) 144 panic("ffs_mountroot: can't setup bdevvp for root"); 145 146 /* 147 * FS specific handling 148 */ 149 mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/ 150 151 /* 152 * Attempt mount 153 */ 154 if( ( error = ntfs_mountfs(rootvp, mp, &args, cred)) != 0) { 155 /* fs specific cleanup (if any)*/ 156 goto error_1; 157 } 158 159 goto dostatfs; /* success*/ 160 161 } 162 163 /* 164 *** 165 * Mounting non-root file system or updating a file system 166 *** 167 */ 168 169 /* copy in user arguments*/ 170 error = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args)); 171 if (error) 172 goto error_1; /* can't get arguments*/ 173 174 /* 175 * If updating, check whether changing from read-only to 176 * read/write; if there is no device name, that's all we do. 177 */ 178 if (mp->mnt_flag & MNT_UPDATE) { 179 /* if not updating name...*/ 180 if (args.fspec == NULL) { 181 /* 182 * Process export requests. Jumping to "success" 183 * will return the vfs_export() error code. 184 */ 185 struct ntfsmount *ntm = VFSTONTFS(mp); 186 error = vfs_export(mp, &ntm->ntm_export, &args.export); 187 goto success; 188 } 189 190 kprintf("ntfs_mount(): MNT_UPDATE not supported\n"); 191 error = EINVAL; 192 goto error_1; 193 } 194 195 /* 196 * Not an update, or updating the name: look up the name 197 * and verify that it refers to a sensible block device. 198 */ 199 devvp = NULL; 200 error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW); 201 if (error == 0) 202 error = nlookup(&nd); 203 if (error == 0) 204 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp); 205 nlookup_done(&nd); 206 if (error) 207 goto error_1; 208 209 if (!vn_isdisk(devvp, &error)) 210 goto error_2; 211 212 if (mp->mnt_flag & MNT_UPDATE) { 213 #if 0 214 /* 215 ******************** 216 * UPDATE 217 ******************** 218 */ 219 220 if (devvp != ntmp->um_devvp) 221 error = EINVAL; /* needs translation */ 222 else 223 vrele(devvp); 224 /* 225 * Update device name only on success 226 */ 227 if( !error) { 228 /* Save "mounted from" info for mount point (NULL pad)*/ 229 copyinstr( args.fspec, 230 mp->mnt_stat.f_mntfromname, 231 MNAMELEN - 1, 232 &size); 233 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 234 } 235 #endif 236 } else { 237 /* 238 ******************** 239 * NEW MOUNT 240 ******************** 241 */ 242 243 /* Save "mounted from" info for mount point (NULL pad)*/ 244 copyinstr( args.fspec, /* device name*/ 245 mp->mnt_stat.f_mntfromname, /* save area*/ 246 MNAMELEN - 1, /* max size*/ 247 &size); /* real size*/ 248 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 249 250 error = ntfs_mountfs(devvp, mp, &args, cred); 251 } 252 if (error) { 253 goto error_2; 254 } 255 256 dostatfs: 257 /* 258 * Initialize FS stat information in mount struct; uses 259 * mp->mnt_stat.f_mntfromname. 260 * 261 * This code is common to root and non-root mounts 262 */ 263 (void)VFS_STATFS(mp, &mp->mnt_stat, cred); 264 265 goto success; 266 267 268 error_2: /* error with devvp held*/ 269 270 /* release devvp before failing*/ 271 vrele(devvp); 272 273 error_1: /* no state to back out*/ 274 275 success: 276 return(error); 277 } 278 279 /* 280 * Common code for mount and mountroot 281 */ 282 int 283 ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp, 284 struct ucred *cred) 285 { 286 struct buf *bp; 287 struct ntfsmount *ntmp; 288 cdev_t dev; 289 int error, ronly, ncount, i; 290 struct vnode *vp; 291 char cs_local[ICONV_CSNMAXLEN]; 292 char cs_ntfs[ICONV_CSNMAXLEN]; 293 294 /* 295 * Disallow multiple mounts of the same device. 296 * Disallow mounting of a device that is currently in use 297 * (except for root, which might share swap device for miniroot). 298 * Flush out any old buffers remaining from a previous use. 299 */ 300 error = vfs_mountedon(devvp); 301 if (error) 302 return (error); 303 ncount = vcount(devvp); 304 305 if (devvp->v_object) 306 ncount -= 1; 307 308 if (ncount > 1) 309 return (EBUSY); 310 311 VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY); 312 error = vinvalbuf(devvp, V_SAVE, 0, 0); 313 VOP__UNLOCK(devvp, 0); 314 if (error) 315 return (error); 316 317 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 318 VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY); 319 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL); 320 VOP__UNLOCK(devvp, 0); 321 if (error) 322 return (error); 323 dev = devvp->v_rdev; 324 325 bp = NULL; 326 327 error = bread(devvp, BBLOCK, BBSIZE, &bp); 328 if (error) 329 goto out; 330 ntmp = kmalloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO); 331 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 332 /* 333 * We must not cache the boot block if its size is not exactly 334 * one cluster in order to avoid confusing the buffer cache when 335 * the boot file is read later by ntfs_readntvattr_plain(), which 336 * reads a cluster at a time. 337 */ 338 if (ntfs_cntob(1) != BBSIZE) 339 bp->b_flags |= B_NOCACHE; 340 brelse( bp ); 341 bp = NULL; 342 343 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 344 error = EINVAL; 345 dprintf(("ntfs_mountfs: invalid boot block\n")); 346 goto out; 347 } 348 349 { 350 int8_t cpr = ntmp->ntm_mftrecsz; 351 if( cpr > 0 ) 352 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 353 else 354 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 355 } 356 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 357 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 358 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 359 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 360 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 361 362 ntmp->ntm_mountp = mp; 363 ntmp->ntm_dev = dev; 364 ntmp->ntm_devvp = devvp; 365 ntmp->ntm_uid = argsp->uid; 366 ntmp->ntm_gid = argsp->gid; 367 ntmp->ntm_mode = argsp->mode; 368 ntmp->ntm_flag = argsp->flag; 369 370 if (argsp->flag & NTFS_MFLAG_KICONV && ntfs_iconv) { 371 bcopy(argsp->cs_local, cs_local, sizeof(cs_local)); 372 bcopy(argsp->cs_ntfs, cs_ntfs, sizeof(cs_ntfs)); 373 ntfs_82u_init(ntmp, cs_local, cs_ntfs); 374 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs); 375 } else { 376 ntfs_82u_init(ntmp, NULL, NULL); 377 ntfs_u28_init(ntmp, ntmp->ntm_82u, NULL, NULL); 378 } 379 380 mp->mnt_data = (qaddr_t)ntmp; 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 vfs_add_vnodeops(mp, &ntfs_vnode_vops, &mp->mnt_vn_norm_ops); 388 389 /* 390 * We read in some system nodes to do not allow 391 * reclaim them and to have everytime access to them. 392 */ 393 { 394 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 395 for (i=0; i<3; i++) { 396 error = VFS_VGET(mp, NULL, 397 pi[i], &(ntmp->ntm_sysvn[pi[i]])); 398 if(error) 399 goto out1; 400 vsetflags(ntmp->ntm_sysvn[pi[i]], VSYSTEM); 401 vref(ntmp->ntm_sysvn[pi[i]]); 402 vput(ntmp->ntm_sysvn[pi[i]]); 403 } 404 } 405 406 /* read the Unicode lowercase --> uppercase translation table, 407 * if necessary */ 408 if ((error = ntfs_toupper_use(mp, ntmp))) 409 goto out1; 410 411 /* 412 * Scan $BitMap and count free clusters 413 */ 414 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 415 if(error) 416 goto out1; 417 418 /* 419 * Read and translate to internal format attribute 420 * definition file. 421 */ 422 { 423 int num,j; 424 struct attrdef ad; 425 426 /* Open $AttrDef */ 427 error = VFS_VGET(mp, NULL, NTFS_ATTRDEFINO, &vp); 428 if(error) 429 goto out1; 430 431 /* Count valid entries */ 432 for(num=0;;num++) { 433 error = ntfs_readattr(ntmp, VTONT(vp), 434 NTFS_A_DATA, NULL, 435 num * sizeof(ad), sizeof(ad), 436 &ad, NULL); 437 if (error) 438 goto out1; 439 if (ad.ad_name[0] == 0) 440 break; 441 } 442 443 /* Alloc memory for attribute definitions */ 444 ntmp->ntm_ad = kmalloc(num * sizeof(struct ntvattrdef), 445 M_NTFSMNT, M_WAITOK); 446 447 ntmp->ntm_adnum = num; 448 449 /* Read them and translate */ 450 for(i=0;i<num;i++){ 451 error = ntfs_readattr(ntmp, VTONT(vp), 452 NTFS_A_DATA, NULL, 453 i * sizeof(ad), sizeof(ad), 454 &ad, NULL); 455 if (error) 456 goto out1; 457 j = 0; 458 do { 459 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 460 } while(ad.ad_name[j++]); 461 ntmp->ntm_ad[i].ad_namelen = j - 1; 462 ntmp->ntm_ad[i].ad_type = ad.ad_type; 463 } 464 465 vput(vp); 466 } 467 468 mp->mnt_stat.f_fsid.val[0] = devid_from_dev(dev); 469 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 470 mp->mnt_maxsymlinklen = 0; 471 mp->mnt_flag |= MNT_LOCAL; 472 dev->si_mountpoint = mp; 473 474 return (0); 475 476 out1: 477 for(i=0;i<NTFS_SYSNODESNUM;i++) 478 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 479 480 if (vflush(mp, 0, 0)) 481 dprintf(("ntfs_mountfs: vflush failed\n")); 482 483 out: 484 dev->si_mountpoint = NULL; 485 if (bp) 486 brelse(bp); 487 488 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 489 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NULL); 490 vn_unlock(devvp); 491 492 return (error); 493 } 494 495 static int 496 ntfs_unmount(struct mount *mp, int mntflags) 497 { 498 struct ntfsmount *ntmp; 499 int error, ronly, flags, i; 500 501 dprintf(("ntfs_unmount: unmounting...\n")); 502 ntmp = VFSTONTFS(mp); 503 504 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 505 flags = 0; 506 if(mntflags & MNT_FORCE) 507 flags |= FORCECLOSE; 508 509 dprintf(("ntfs_unmount: vflushing...\n")); 510 error = vflush(mp, 0, flags | SKIPSYSTEM); 511 if (error) { 512 kprintf("ntfs_unmount: vflush failed: %d\n",error); 513 return (error); 514 } 515 516 /* Check if only system vnodes are left */ 517 for(i=0;i<NTFS_SYSNODESNUM;i++) 518 if((ntmp->ntm_sysvn[i]) && 519 (VREFCNT(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY); 520 521 /* Dereference all system vnodes */ 522 for(i=0;i<NTFS_SYSNODESNUM;i++) 523 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 524 525 /* vflush system vnodes */ 526 error = vflush(mp, 0, flags); 527 if (error) 528 kprintf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 529 530 /* Check if the type of device node isn't VBAD before 531 * touching v_cdevinfo. If the device vnode is revoked, the 532 * field is NULL and touching it causes null pointer derefercence. 533 */ 534 if (ntmp->ntm_devvp->v_type != VBAD) 535 ntmp->ntm_devvp->v_rdev->si_mountpoint = NULL; 536 537 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 538 vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0); 539 error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, NULL); 540 vn_unlock(ntmp->ntm_devvp); 541 542 vrele(ntmp->ntm_devvp); 543 544 /* free the toupper table, if this has been last mounted ntfs volume */ 545 ntfs_toupper_unuse(); 546 547 dprintf(("ntfs_umount: freeing memory...\n")); 548 ntfs_u28_uninit(ntmp); 549 ntfs_82u_uninit(ntmp); 550 mp->mnt_data = (qaddr_t)0; 551 mp->mnt_flag &= ~MNT_LOCAL; 552 kfree(ntmp->ntm_ad, M_NTFSMNT); 553 kfree(ntmp, M_NTFSMNT); 554 return (error); 555 } 556 557 static int 558 ntfs_root(struct mount *mp, struct vnode **vpp) 559 { 560 struct vnode *nvp; 561 int error = 0; 562 563 dprintf(("ntfs_root(): sysvn: %p\n", 564 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 565 error = VFS_VGET(mp, NULL, (ino_t)NTFS_ROOTINO, &nvp); 566 if(error) { 567 kprintf("ntfs_root: VFS_VGET failed: %d\n",error); 568 return (error); 569 } 570 571 *vpp = nvp; 572 return (0); 573 } 574 575 int 576 ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep) 577 { 578 struct vnode *vp; 579 u_int8_t *tmp; 580 int j, error; 581 long cfree = 0; 582 size_t bmsize, i; 583 584 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 585 586 bmsize = VTOF(vp)->f_size; 587 588 tmp = kmalloc(bmsize, M_TEMP, M_WAITOK); 589 590 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 591 0, bmsize, tmp, NULL); 592 if (error) 593 goto out; 594 595 for(i=0;i<bmsize;i++) 596 for(j=0;j<8;j++) 597 if(~tmp[i] & (1 << j)) cfree++; 598 *cfreep = cfree; 599 600 out: 601 kfree(tmp, M_TEMP); 602 return(error); 603 } 604 605 static int 606 ntfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) 607 { 608 struct ntfsmount *ntmp = VFSTONTFS(mp); 609 u_int64_t mftallocated; 610 611 dprintf(("ntfs_statfs():\n")); 612 613 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 614 615 sbp->f_type = mp->mnt_vfc->vfc_typenum; 616 sbp->f_bsize = ntmp->ntm_bps; 617 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 618 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 619 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 620 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec; 621 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 622 sbp->f_ffree; 623 if (sbp != &mp->mnt_stat) { 624 bcopy((caddr_t)mp->mnt_stat.f_mntfromname, 625 (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); 626 } 627 sbp->f_flags = mp->mnt_flag; 628 629 return (0); 630 } 631 632 static int 633 ntfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred) 634 { 635 struct ntfsmount *ntmp = VFSTONTFS(mp); 636 u_int64_t mftallocated; 637 638 dprintf(("ntfs_statvfs():\n")); 639 640 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 641 642 sbp->f_type = mp->mnt_vfc->vfc_typenum; 643 sbp->f_bsize = ntmp->ntm_bps; 644 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 645 sbp->f_bfree = sbp->f_bavail = ntmp->ntm_cfree * ntmp->ntm_spc; 646 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec; 647 sbp->f_files = mftallocated / (ntmp->ntm_bpmftrec * ntmp->ntm_bps) + 648 sbp->f_ffree; 649 650 return (0); 651 } 652 653 /*ARGSUSED*/ 654 static int 655 ntfs_fhtovp(struct mount *mp, struct vnode *rootvp, 656 struct fid *fhp, struct vnode **vpp) 657 { 658 struct vnode *nvp; 659 struct ntfid *ntfhp = (struct ntfid *)fhp; 660 int error; 661 662 ddprintf(("ntfs_fhtovp(): %ju\n", ntfhp->ntfid_ino)); 663 664 if ((error = VFS_VGET(mp, NULL, ntfhp->ntfid_ino, &nvp)) != 0) { 665 *vpp = NULLVP; 666 return (error); 667 } 668 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 669 * with NTFS, we don't need to check anything else for now */ 670 *vpp = nvp; 671 672 return (0); 673 } 674 675 static int 676 ntfs_vptofh(struct vnode *vp, struct fid *fhp) 677 { 678 struct ntnode *ntp; 679 struct ntfid *ntfhp; 680 681 ddprintf(("ntfs_fhtovp(): %p\n", vp)); 682 683 ntp = VTONT(vp); 684 ntfhp = (struct ntfid *)fhp; 685 ntfhp->ntfid_len = sizeof(struct ntfid); 686 ntfhp->ntfid_ino = ntp->i_number; 687 /* ntfhp->ntfid_gen = ntp->i_gen; */ 688 return (0); 689 } 690 691 int 692 ntfs_vgetex(struct mount *mp, ino_t ino, u_int32_t attrtype, char *attrname, 693 u_long lkflags, u_long flags, struct thread *td, 694 struct vnode **vpp) 695 { 696 int error; 697 struct ntfsmount *ntmp; 698 struct ntnode *ip; 699 struct fnode *fp; 700 struct vnode *vp; 701 enum vtype f_type; 702 703 dprintf(("ntfs_vgetex: ino: %ju, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 704 (uintmax_t) ino, attrtype, attrname?attrname:"", lkflags, flags)); 705 706 ntmp = VFSTONTFS(mp); 707 *vpp = NULL; 708 709 /* Get ntnode */ 710 error = ntfs_ntlookup(ntmp, ino, &ip); 711 if (error) { 712 kprintf("ntfs_vget: ntfs_ntget failed\n"); 713 return (error); 714 } 715 716 /* It may be not initialized fully, so force load it */ 717 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 718 error = ntfs_loadntnode(ntmp, ip); 719 if(error) { 720 kprintf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %"PRId64"\n", 721 ip->i_number); 722 ntfs_ntput(ip); 723 return (error); 724 } 725 } 726 727 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 728 if (error) { 729 kprintf("ntfs_vget: ntfs_fget failed\n"); 730 ntfs_ntput(ip); 731 return (error); 732 } 733 734 f_type = VINT; 735 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 736 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 737 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 738 f_type = VDIR; 739 } else if (flags & VG_EXT) { 740 f_type = VINT; 741 fp->f_size = fp->f_allocated = 0; 742 } else { 743 f_type = VREG; 744 745 error = ntfs_filesize(ntmp, fp, 746 &fp->f_size, &fp->f_allocated); 747 if (error) { 748 ntfs_ntput(ip); 749 return (error); 750 } 751 } 752 753 fp->f_flag |= FN_VALID; 754 } 755 756 if (FTOV(fp)) { 757 VGET(FTOV(fp), lkflags); 758 *vpp = FTOV(fp); 759 ntfs_ntput(ip); 760 return (0); 761 } 762 763 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &vp, VLKTIMEOUT, 0); 764 if (error) { 765 ntfs_frele(fp); 766 ntfs_ntput(ip); 767 return (error); 768 } 769 dprintf(("ntfs_vget: vnode: %p for ntnode: %ju\n", vp, (uintmax_t)ino)); 770 771 fp->f_vp = vp; 772 vp->v_data = fp; 773 vp->v_type = f_type; 774 775 if (ino == NTFS_ROOTINO) 776 vsetflags(vp, VROOT); 777 778 /* 779 * Normal files use the buffer cache 780 */ 781 if (f_type == VREG) 782 vinitvmio(vp, fp->f_size, PAGE_SIZE, -1); 783 784 ntfs_ntput(ip); 785 786 KKASSERT(lkflags & LK_TYPE_MASK); 787 /* XXX leave vnode locked exclusively from getnewvnode */ 788 vx_downgrade(vp); 789 *vpp = vp; 790 return (0); 791 } 792 793 static int 794 ntfs_vget(struct mount *mp, struct vnode *dvp, ino_t ino, struct vnode **vpp) 795 { 796 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 797 LK_EXCLUSIVE | LK_RETRY, 0, curthread, vpp); 798 } 799 800 static struct vfsops ntfs_vfsops = { 801 .vfs_flags = 0, 802 .vfs_mount = ntfs_mount, 803 .vfs_unmount = ntfs_unmount, 804 .vfs_root = ntfs_root, 805 .vfs_statfs = ntfs_statfs, 806 .vfs_statvfs = ntfs_statvfs, 807 .vfs_vget = ntfs_vget, 808 .vfs_fhtovp = ntfs_fhtovp, 809 .vfs_checkexp = ntfs_checkexp, 810 .vfs_vptofh = ntfs_vptofh, 811 .vfs_init = ntfs_init, 812 .vfs_uninit = ntfs_nthash_uninit /* see ntfs_ihash.c */ 813 }; 814 VFS_SET(ntfs_vfsops, ntfs, 0); 815 MODULE_VERSION(ntfs, 1); 816