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sys/ntfs/ntfs_vfsops.c
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1 /* $OpenBSD: ntfs_vfsops.c,v 1.65 2022/01/11 03:13:59 jsg Exp $ */ 2 /* $NetBSD: ntfs_vfsops.c,v 1.7 2003/04/24 07:50:19 christos Exp $ */ 3 4 /*- 5 * Copyright (c) 1998, 1999 Semen Ustimenko 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * Id: ntfs_vfsops.c,v 1.7 1999/05/31 11:28:30 phk Exp 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/namei.h> 35 #include <sys/proc.h> 36 #include <sys/kernel.h> 37 #include <sys/vnode.h> 38 #include <sys/lock.h> 39 #include <sys/mount.h> 40 #include <sys/buf.h> 41 #include <sys/disk.h> 42 #include <sys/fcntl.h> 43 #include <sys/malloc.h> 44 #include <sys/device.h> 45 #include <sys/conf.h> 46 #include <sys/specdev.h> 47 48 /*#define NTFS_DEBUG 1*/ 49 #include <ntfs/ntfs.h> 50 #include <ntfs/ntfs_inode.h> 51 #include <ntfs/ntfs_subr.h> 52 #include <ntfs/ntfs_vfsops.h> 53 #include <ntfs/ntfs_ihash.h> 54 55 int ntfs_mount(struct mount *, const char *, void *, 56 struct nameidata *, struct proc *); 57 int ntfs_quotactl(struct mount *, int, uid_t, caddr_t, 58 struct proc *); 59 int ntfs_root(struct mount *, struct vnode **); 60 int ntfs_start(struct mount *, int, struct proc *); 61 int ntfs_statfs(struct mount *, struct statfs *, 62 struct proc *); 63 int ntfs_sync(struct mount *, int, int, struct ucred *, 64 struct proc *); 65 int ntfs_unmount(struct mount *, int, struct proc *); 66 int ntfs_vget(struct mount *mp, ino_t ino, 67 struct vnode **vpp); 68 int ntfs_mountfs(struct vnode *, struct mount *, 69 struct ntfs_args *, struct proc *); 70 int ntfs_vptofh(struct vnode *, struct fid *); 71 72 int ntfs_init(struct vfsconf *); 73 int ntfs_fhtovp(struct mount *, struct fid *, 74 struct vnode **); 75 int ntfs_checkexp(struct mount *, struct mbuf *, 76 int *, struct ucred **); 77 int ntfs_sysctl(int *, u_int, void *, size_t *, void *, 78 size_t, struct proc *); 79 80 /* 81 * Verify a remote client has export rights and return these rights via. 82 * exflagsp and credanonp. 83 */ 84 int 85 ntfs_checkexp(struct mount *mp, struct mbuf *nam, int *exflagsp, 86 struct ucred **credanonp) 87 { 88 struct netcred *np; 89 struct ntfsmount *ntm = VFSTONTFS(mp); 90 91 /* 92 * Get the export permission structure for this <mp, client> tuple. 93 */ 94 np = vfs_export_lookup(mp, &ntm->ntm_export, nam); 95 if (np == NULL) 96 return (EACCES); 97 98 *exflagsp = np->netc_exflags; 99 *credanonp = &np->netc_anon; 100 return (0); 101 } 102 103 int 104 ntfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, 105 size_t newlen, struct proc *p) 106 { 107 return (EINVAL); 108 } 109 110 int 111 ntfs_init(struct vfsconf *vcp) 112 { 113 return 0; 114 } 115 116 int 117 ntfs_mount(struct mount *mp, const char *path, void *data, 118 struct nameidata *ndp, struct proc *p) 119 { 120 int err = 0; 121 struct vnode *devvp; 122 struct ntfs_args *args = data; 123 char fname[MNAMELEN]; 124 char fspec[MNAMELEN]; 125 126 ntfs_nthashinit(); 127 128 /* 129 *** 130 * Mounting non-root file system or updating a file system 131 *** 132 */ 133 134 /* 135 * If updating, check whether changing from read-only to 136 * read/write; if there is no device name, that's all we do. 137 */ 138 if (mp->mnt_flag & MNT_UPDATE) { 139 /* if not updating name...*/ 140 if (args && args->fspec == NULL) { 141 /* 142 * Process export requests. Jumping to "success" 143 * will return the vfs_export() error code. 144 */ 145 struct ntfsmount *ntm = VFSTONTFS(mp); 146 err = vfs_export(mp, &ntm->ntm_export, &args->export_info); 147 goto success; 148 } 149 150 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 151 err = EINVAL; 152 goto error_1; 153 } 154 155 /* 156 * Not an update, or updating the name: look up the name 157 * and verify that it refers to a sensible block device. 158 */ 159 err = copyinstr(args->fspec, fspec, sizeof(fspec), NULL); 160 if (err) 161 goto error_1; 162 163 if (disk_map(fspec, fname, sizeof(fname), DM_OPENBLCK) == -1) 164 bcopy(fspec, fname, sizeof(fname)); 165 166 NDINIT(ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, fname, p); 167 err = namei(ndp); 168 if (err) { 169 /* can't get devvp!*/ 170 goto error_1; 171 } 172 173 devvp = ndp->ni_vp; 174 175 if (devvp->v_type != VBLK) { 176 err = ENOTBLK; 177 goto error_2; 178 } 179 180 if (major(devvp->v_rdev) >= nblkdev) { 181 err = ENXIO; 182 goto error_2; 183 } 184 185 if (mp->mnt_flag & MNT_UPDATE) { 186 #if 0 187 /* 188 ******************** 189 * UPDATE 190 ******************** 191 */ 192 193 if (devvp != ntmp->um_devvp) 194 err = EINVAL; /* needs translation */ 195 else 196 vrele(devvp); 197 /* 198 * Update device name only on success 199 */ 200 if( !err) { 201 err = set_statfs_info(NULL, UIO_USERSPACE, args->fspec, 202 UIO_USERSPACE, mp, p); 203 } 204 #endif 205 } else { 206 /* 207 ******************** 208 * NEW MOUNT 209 ******************** 210 */ 211 212 /* 213 * Since this is a new mount, we want the names for 214 * the device and the mount point copied in. If an 215 * error occurs, the mountpoint is discarded by the 216 * upper level code. 217 */ 218 /* Save "last mounted on" info for mount point (NULL pad)*/ 219 bzero(mp->mnt_stat.f_mntonname, MNAMELEN); 220 strlcpy(mp->mnt_stat.f_mntonname, path, MNAMELEN); 221 bzero(mp->mnt_stat.f_mntfromname, MNAMELEN); 222 strlcpy(mp->mnt_stat.f_mntfromname, fname, MNAMELEN); 223 bzero(mp->mnt_stat.f_mntfromspec, MNAMELEN); 224 strlcpy(mp->mnt_stat.f_mntfromspec, fspec, MNAMELEN); 225 bcopy(args, &mp->mnt_stat.mount_info.ntfs_args, sizeof(*args)); 226 if ( !err) { 227 err = ntfs_mountfs(devvp, mp, args, p); 228 } 229 } 230 if (err) { 231 goto error_2; 232 } 233 234 /* 235 * Initialize FS stat information in mount struct; uses both 236 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname 237 * 238 * This code is common to root and non-root mounts 239 */ 240 (void)VFS_STATFS(mp, &mp->mnt_stat, p); 241 242 goto success; 243 244 245 error_2: /* error with devvp held*/ 246 247 /* release devvp before failing*/ 248 vrele(devvp); 249 250 error_1: /* no state to back out*/ 251 252 success: 253 return(err); 254 } 255 256 /* 257 * Common code for mount and mountroot 258 */ 259 int 260 ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp, 261 struct proc *p) 262 { 263 struct buf *bp; 264 struct ntfsmount *ntmp = NULL; 265 dev_t dev = devvp->v_rdev; 266 int error, ncount, i; 267 struct vnode *vp; 268 269 /* 270 * Disallow multiple mounts of the same device. 271 * Disallow mounting of a device that is currently in use 272 * (except for root, which might share swap device for miniroot). 273 * Flush out any old buffers remaining from a previous use. 274 */ 275 error = vfs_mountedon(devvp); 276 if (error) 277 return (error); 278 ncount = vcount(devvp); 279 if (ncount > 1 && devvp != rootvp) 280 return (EBUSY); 281 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 282 error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, INFSLP); 283 VOP_UNLOCK(devvp); 284 if (error) 285 return (error); 286 287 error = VOP_OPEN(devvp, FREAD, FSCRED, p); 288 if (error) 289 return (error); 290 291 bp = NULL; 292 293 error = bread(devvp, BBLOCK, BBSIZE, &bp); 294 if (error) 295 goto out; 296 ntmp = malloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO); 297 bcopy(bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile)); 298 brelse(bp); 299 bp = NULL; 300 301 if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 302 error = EINVAL; 303 DPRINTF("ntfs_mountfs: invalid boot block\n"); 304 goto out; 305 } 306 307 { 308 int8_t cpr = ntmp->ntm_mftrecsz; 309 if( cpr > 0 ) 310 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 311 else 312 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 313 } 314 DPRINTF("ntfs_mountfs(): bps: %u, spc: %u, media: %x, " 315 "mftrecsz: %u (%u sects)\n", ntmp->ntm_bps, ntmp->ntm_spc, 316 ntmp->ntm_bootfile.bf_media, ntmp->ntm_mftrecsz, 317 ntmp->ntm_bpmftrec); 318 DPRINTF("ntfs_mountfs(): mftcn: 0x%llx|0x%llx\n", 319 ntmp->ntm_mftcn, ntmp->ntm_mftmirrcn); 320 321 ntmp->ntm_mountp = mp; 322 ntmp->ntm_dev = dev; 323 ntmp->ntm_devvp = devvp; 324 ntmp->ntm_uid = argsp->uid; 325 ntmp->ntm_gid = argsp->gid; 326 ntmp->ntm_mode = argsp->mode; 327 ntmp->ntm_flag = argsp->flag; 328 mp->mnt_data = ntmp; 329 TAILQ_INIT(&ntmp->ntm_ntnodeq); 330 331 /* set file name encode/decode hooks XXX utf-8 only for now */ 332 ntmp->ntm_wget = ntfs_utf8_wget; 333 ntmp->ntm_wput = ntfs_utf8_wput; 334 ntmp->ntm_wcmp = ntfs_utf8_wcmp; 335 336 DPRINTF("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 337 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS) ? "insens." : "sens.", 338 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) ? " allnames," : "", 339 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode); 340 341 /* 342 * We read in some system nodes to do not allow 343 * reclaim them and to have everytime access to them. 344 */ 345 { 346 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 347 for (i=0; i<3; i++) { 348 error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); 349 if(error) 350 goto out1; 351 ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; 352 vref(ntmp->ntm_sysvn[pi[i]]); 353 vput(ntmp->ntm_sysvn[pi[i]]); 354 } 355 } 356 357 /* read the Unicode lowercase --> uppercase translation table, 358 * if necessary */ 359 if ((error = ntfs_toupper_use(mp, ntmp, p))) 360 goto out1; 361 362 /* 363 * Scan $BitMap and count free clusters 364 */ 365 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 366 if(error) 367 goto out1; 368 369 /* 370 * Read and translate to internal format attribute 371 * definition file. 372 */ 373 { 374 int num,j; 375 struct attrdef ad; 376 377 /* Open $AttrDef */ 378 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp ); 379 if(error) 380 goto out1; 381 382 /* Count valid entries */ 383 for(num = 0; ; num++) { 384 error = ntfs_readattr(ntmp, VTONT(vp), 385 NTFS_A_DATA, NULL, num * sizeof(ad), sizeof(ad), 386 &ad, NULL); 387 if (error) 388 goto out1; 389 if (ad.ad_name[0] == 0) 390 break; 391 } 392 393 /* Alloc memory for attribute definitions */ 394 ntmp->ntm_ad = mallocarray(num, sizeof(struct ntvattrdef), 395 M_NTFSMNT, M_WAITOK); 396 397 ntmp->ntm_adnum = num; 398 399 /* Read them and translate */ 400 for(i = 0; i < num; i++){ 401 error = ntfs_readattr(ntmp, VTONT(vp), 402 NTFS_A_DATA, NULL, i * sizeof(ad), sizeof(ad), 403 &ad, NULL); 404 if (error) 405 goto out1; 406 j = 0; 407 do { 408 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 409 } while(ad.ad_name[j++]); 410 ntmp->ntm_ad[i].ad_namelen = j - 1; 411 ntmp->ntm_ad[i].ad_type = ad.ad_type; 412 } 413 414 vput(vp); 415 } 416 417 mp->mnt_stat.f_fsid.val[0] = dev; 418 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 419 mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; 420 mp->mnt_flag |= MNT_LOCAL; 421 devvp->v_specmountpoint = mp; 422 return (0); 423 424 out1: 425 for (i = 0; i < NTFS_SYSNODESNUM; i++) 426 if (ntmp->ntm_sysvn[i]) 427 vrele(ntmp->ntm_sysvn[i]); 428 429 if (vflush(mp,NULLVP,0)) 430 DPRINTF("ntfs_mountfs: vflush failed\n"); 431 432 out: 433 if (devvp->v_specinfo) 434 devvp->v_specmountpoint = NULL; 435 if (bp) 436 brelse(bp); 437 438 if (ntmp != NULL) { 439 if (ntmp->ntm_ad != NULL) 440 free(ntmp->ntm_ad, M_NTFSMNT, 0); 441 free(ntmp, M_NTFSMNT, 0); 442 mp->mnt_data = NULL; 443 } 444 445 /* lock the device vnode before calling VOP_CLOSE() */ 446 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 447 (void)VOP_CLOSE(devvp, FREAD, NOCRED, p); 448 VOP_UNLOCK(devvp); 449 450 return (error); 451 } 452 453 int 454 ntfs_start(struct mount *mp, int flags, struct proc *p) 455 { 456 return (0); 457 } 458 459 int 460 ntfs_unmount(struct mount *mp, int mntflags, struct proc *p) 461 { 462 struct ntfsmount *ntmp; 463 int error, flags, i; 464 465 DPRINTF("ntfs_unmount: unmounting...\n"); 466 ntmp = VFSTONTFS(mp); 467 468 flags = 0; 469 if(mntflags & MNT_FORCE) 470 flags |= FORCECLOSE; 471 472 DPRINTF("ntfs_unmount: vflushing...\n"); 473 error = vflush(mp,NULLVP,flags | SKIPSYSTEM); 474 if (error) { 475 DPRINTF("ntfs_unmount: vflush failed: %d\n", error); 476 return (error); 477 } 478 479 /* Check if system vnodes are still referenced */ 480 for(i=0;i<NTFS_SYSNODESNUM;i++) { 481 if(((mntflags & MNT_FORCE) == 0) && (ntmp->ntm_sysvn[i] && 482 ntmp->ntm_sysvn[i]->v_usecount > 1)) 483 return (EBUSY); 484 } 485 486 /* Dereference all system vnodes */ 487 for(i=0;i<NTFS_SYSNODESNUM;i++) 488 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 489 490 /* vflush system vnodes */ 491 error = vflush(mp,NULLVP,flags); 492 if (error) { 493 /* XXX should this be panic() ? */ 494 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 495 } 496 497 /* Check if the type of device node isn't VBAD before 498 * touching v_specinfo. If the device vnode is revoked, the 499 * field is NULL and touching it causes null pointer dereference. 500 */ 501 if (ntmp->ntm_devvp->v_type != VBAD) 502 ntmp->ntm_devvp->v_specmountpoint = NULL; 503 504 /* lock the device vnode before calling VOP_CLOSE() */ 505 vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); 506 vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, INFSLP); 507 (void)VOP_CLOSE(ntmp->ntm_devvp, FREAD, NOCRED, p); 508 vput(ntmp->ntm_devvp); 509 510 /* free the toupper table, if this has been last mounted ntfs volume */ 511 ntfs_toupper_unuse(p); 512 513 DPRINTF("ntfs_unmount: freeing memory...\n"); 514 free(ntmp->ntm_ad, M_NTFSMNT, 0); 515 free(ntmp, M_NTFSMNT, 0); 516 mp->mnt_data = NULL; 517 mp->mnt_flag &= ~MNT_LOCAL; 518 return (0); 519 } 520 521 int 522 ntfs_root(struct mount *mp, struct vnode **vpp) 523 { 524 struct vnode *nvp; 525 int error = 0; 526 527 DPRINTF("ntfs_root(): sysvn: %p\n", 528 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]); 529 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 530 if(error) { 531 printf("ntfs_root: VFS_VGET failed: %d\n",error); 532 return (error); 533 } 534 535 *vpp = nvp; 536 return (0); 537 } 538 539 /* 540 * Do operations associated with quotas, not supported 541 */ 542 int 543 ntfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg, 544 struct proc *p) 545 { 546 return EOPNOTSUPP; 547 } 548 549 int 550 ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep) 551 { 552 struct vnode *vp; 553 u_int8_t *tmp; 554 int j, error; 555 cn_t cfree = 0; 556 uint64_t bmsize, offset; 557 size_t chunksize, i; 558 559 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 560 561 bmsize = VTOF(vp)->f_size; 562 563 if (bmsize > 1024 * 1024) 564 chunksize = 1024 * 1024; 565 else 566 chunksize = bmsize; 567 568 tmp = malloc(chunksize, M_TEMP, M_WAITOK); 569 570 for (offset = 0; offset < bmsize; offset += chunksize) { 571 if (chunksize > bmsize - offset) 572 chunksize = bmsize - offset; 573 574 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 575 offset, chunksize, tmp, NULL); 576 if (error) 577 goto out; 578 579 for (i = 0; i < chunksize; i++) 580 for (j = 0; j < 8; j++) 581 if (~tmp[i] & (1 << j)) 582 cfree++; 583 } 584 585 *cfreep = cfree; 586 587 out: 588 free(tmp, M_TEMP, 0); 589 return(error); 590 } 591 592 int 593 ntfs_statfs(struct mount *mp, struct statfs *sbp, struct proc *p) 594 { 595 struct ntfsmount *ntmp = VFSTONTFS(mp); 596 u_int64_t mftallocated; 597 598 DPRINTF("ntfs_statfs():\n"); 599 600 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 601 602 sbp->f_bsize = ntmp->ntm_bps; 603 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 604 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 605 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 606 sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; 607 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 608 sbp->f_ffree; 609 copy_statfs_info(sbp, mp); 610 611 return (0); 612 } 613 614 int 615 ntfs_sync(struct mount *mp, int waitfor, int stall, struct ucred *cred, struct proc *p) 616 { 617 /*DPRINTF("ntfs_sync():\n");*/ 618 return (0); 619 } 620 621 int 622 ntfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 623 { 624 struct ntfid *ntfhp = (struct ntfid *)fhp; 625 int error; 626 627 DDPRINTF("ntfs_fhtovp(): %s: %u\n", 628 mp->mnt_stat.f_mntonname, ntfhp->ntfid_ino); 629 630 error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL, 631 LK_EXCLUSIVE | LK_RETRY, 0, vpp); /* XXX */ 632 if (error != 0) { 633 *vpp = NULLVP; 634 return (error); 635 } 636 637 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 638 * with NTFS, we don't need to check anything else for now */ 639 return (0); 640 } 641 642 int 643 ntfs_vptofh(struct vnode *vp, struct fid *fhp) 644 { 645 struct ntnode *ntp; 646 struct ntfid *ntfhp; 647 struct fnode *fn; 648 649 DDPRINTF("ntfs_fhtovp(): %s: %p\n", 650 vp->v_mount->mnt_stat.f_mntonname, vp); 651 652 fn = VTOF(vp); 653 ntp = VTONT(vp); 654 ntfhp = (struct ntfid *)fhp; 655 ntfhp->ntfid_len = sizeof(struct ntfid); 656 ntfhp->ntfid_ino = ntp->i_number; 657 ntfhp->ntfid_attr = fn->f_attrtype; 658 #ifdef notyet 659 ntfhp->ntfid_gen = ntp->i_gen; 660 #endif 661 return (0); 662 } 663 664 int 665 ntfs_vgetex(struct mount *mp, ntfsino_t ino, u_int32_t attrtype, char *attrname, 666 u_long lkflags, u_long flags, struct vnode **vpp) 667 { 668 int error; 669 struct ntfsmount *ntmp; 670 struct ntnode *ip; 671 struct fnode *fp; 672 struct vnode *vp; 673 enum vtype f_type; 674 675 DPRINTF("ntfs_vgetex: ino: %u, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 676 ino, attrtype, attrname ? attrname : "", lkflags, flags); 677 678 ntmp = VFSTONTFS(mp); 679 *vpp = NULL; 680 681 /* Get ntnode */ 682 error = ntfs_ntlookup(ntmp, ino, &ip); 683 if (error) { 684 printf("ntfs_vget: ntfs_ntget failed\n"); 685 return (error); 686 } 687 688 /* It may be not initialized fully, so force load it */ 689 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 690 error = ntfs_loadntnode(ntmp, ip); 691 if(error) { 692 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 693 ip->i_number); 694 ntfs_ntput(ip); 695 696 return (error); 697 } 698 } 699 700 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 701 if (error) { 702 printf("ntfs_vget: ntfs_fget failed\n"); 703 ntfs_ntput(ip); 704 705 return (error); 706 } 707 708 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 709 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 710 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 711 f_type = VDIR; 712 } else if (flags & VG_EXT) { 713 f_type = VNON; 714 fp->f_size = fp->f_allocated = 0; 715 } else { 716 f_type = VREG; 717 718 error = ntfs_filesize(ntmp, fp, 719 &fp->f_size, &fp->f_allocated); 720 if (error) { 721 ntfs_ntput(ip); 722 723 return (error); 724 } 725 } 726 727 fp->f_flag |= FN_VALID; 728 } 729 730 /* 731 * We may be calling vget() now. To avoid potential deadlock, we need 732 * to release ntnode lock, since due to locking order vnode 733 * lock has to be acquired first. 734 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled 735 * prematurely. 736 */ 737 ntfs_ntput(ip); 738 739 if (FTOV(fp)) { 740 /* vget() returns error if the vnode has been recycled */ 741 if (vget(FTOV(fp), lkflags) == 0) { 742 *vpp = FTOV(fp); 743 return (0); 744 } 745 } 746 747 error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &ntfs_vops, &vp); 748 if(error) { 749 ntfs_frele(fp); 750 ntfs_ntput(ip); 751 752 return (error); 753 } 754 DPRINTF("ntfs_vget: vnode: %p for ntnode: %u\n", vp, ino); 755 756 fp->f_vp = vp; 757 vp->v_data = fp; 758 vp->v_type = f_type; 759 760 if (ino == NTFS_ROOTINO) 761 vp->v_flag |= VROOT; 762 763 if (lkflags & LK_TYPE_MASK) { 764 error = vn_lock(vp, lkflags); 765 if (error) { 766 vput(vp); 767 return (error); 768 } 769 } 770 771 *vpp = vp; 772 return (0); 773 } 774 775 int 776 ntfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 777 { 778 if (ino > (ntfsino_t)-1) 779 panic("ntfs_vget: alien ino_t %llu", (unsigned long long)ino); 780 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, 781 LK_EXCLUSIVE | LK_RETRY, 0, vpp); /* XXX */ 782 } 783 784 const struct vfsops ntfs_vfsops = { 785 .vfs_mount = ntfs_mount, 786 .vfs_start = ntfs_start, 787 .vfs_unmount = ntfs_unmount, 788 .vfs_root = ntfs_root, 789 .vfs_quotactl = ntfs_quotactl, 790 .vfs_statfs = ntfs_statfs, 791 .vfs_sync = ntfs_sync, 792 .vfs_vget = ntfs_vget, 793 .vfs_fhtovp = ntfs_fhtovp, 794 .vfs_vptofh = ntfs_vptofh, 795 .vfs_init = ntfs_init, 796 .vfs_sysctl = ntfs_sysctl, 797 .vfs_checkexp = ntfs_checkexp, 798 };
Cache object: d3d6636279018a32adfde5e2f4602324
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