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sys/fs/ntfs/ntfs_vfsops.c
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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: releng/8.4/sys/fs/ntfs/ntfs_vfsops.c 214420 2010-10-27 15:44:49Z kib $ 29 */ 30 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/namei.h> 35 #include <sys/conf.h> 36 #include <sys/proc.h> 37 #include <sys/kernel.h> 38 #include <sys/vnode.h> 39 #include <sys/mount.h> 40 #include <sys/bio.h> 41 #include <sys/buf.h> 42 #include <sys/fcntl.h> 43 #include <sys/malloc.h> 44 #include <sys/stat.h> 45 #include <sys/systm.h> 46 47 #include <geom/geom.h> 48 #include <geom/geom_vfs.h> 49 50 #include <vm/vm.h> 51 #include <vm/vm_param.h> 52 #include <vm/vm_page.h> 53 #include <vm/vm_object.h> 54 #include <vm/vm_extern.h> 55 56 /*#define NTFS_DEBUG 1*/ 57 #include <fs/ntfs/ntfs.h> 58 #include <fs/ntfs/ntfs_inode.h> 59 #include <fs/ntfs/ntfs_subr.h> 60 #include <fs/ntfs/ntfs_vfsops.h> 61 #include <fs/ntfs/ntfs_ihash.h> 62 #include <fs/ntfs/ntfsmount.h> 63 64 static 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 sockaddr; 70 71 static int ntfs_mountfs(register struct vnode *, struct mount *, 72 struct thread *); 73 static int ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep); 74 75 static vfs_init_t ntfs_init; 76 static vfs_uninit_t ntfs_uninit; 77 static vfs_vget_t ntfs_vget; 78 static vfs_fhtovp_t ntfs_fhtovp; 79 static vfs_cmount_t ntfs_cmount; 80 static vfs_mount_t ntfs_mount; 81 static vfs_root_t ntfs_root; 82 static vfs_statfs_t ntfs_statfs; 83 static vfs_unmount_t ntfs_unmount; 84 85 static b_strategy_t ntfs_bufstrategy; 86 87 /* 88 * Buffer operations for NTFS vnodes. 89 * We punt on VOP_BMAP, so we need to do 90 * strategy on the file's vnode rather 91 * than the underlying device's 92 */ 93 static struct buf_ops ntfs_vnbufops = { 94 .bop_name = "NTFS", 95 .bop_strategy = ntfs_bufstrategy, 96 }; 97 98 static int 99 ntfs_init ( 100 struct vfsconf *vcp ) 101 { 102 ntfs_nthashinit(); 103 ntfs_toupper_init(); 104 return 0; 105 } 106 107 static int 108 ntfs_uninit ( 109 struct vfsconf *vcp ) 110 { 111 ntfs_toupper_destroy(); 112 ntfs_nthashdestroy(); 113 return 0; 114 } 115 116 static int 117 ntfs_cmount ( 118 struct mntarg *ma, 119 void *data, 120 int flags) 121 { 122 struct ntfs_args args; 123 struct export_args exp; 124 int error; 125 126 error = copyin(data, &args, sizeof(args)); 127 if (error) 128 return (error); 129 vfs_oexport_conv(&args.export, &exp); 130 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN); 131 ma = mount_arg(ma, "export", &exp, sizeof(exp)); 132 ma = mount_argf(ma, "uid", "%d", args.uid); 133 ma = mount_argf(ma, "gid", "%d", args.gid); 134 ma = mount_argf(ma, "mode", "%d", args.mode); 135 ma = mount_argb(ma, args.flag & NTFS_MFLAG_CASEINS, "nocaseins"); 136 ma = mount_argb(ma, args.flag & NTFS_MFLAG_ALLNAMES, "noallnames"); 137 if (args.flag & NTFS_MFLAG_KICONV) { 138 ma = mount_argsu(ma, "cs_ntfs", args.cs_ntfs, 64); 139 ma = mount_argsu(ma, "cs_local", args.cs_local, 64); 140 } 141 142 error = kernel_mount(ma, flags); 143 144 return (error); 145 } 146 147 static const char *ntfs_opts[] = { 148 "from", "export", "uid", "gid", "mode", "caseins", "allnames", 149 "kiconv", "cs_ntfs", "cs_local", NULL 150 }; 151 152 static int 153 ntfs_mount (struct mount *mp) 154 { 155 int err = 0, error; 156 struct vnode *devvp; 157 struct nameidata ndp; 158 char *from; 159 160 if (vfs_filteropt(mp->mnt_optnew, ntfs_opts)) 161 return (EINVAL); 162 163 from = vfs_getopts(mp->mnt_optnew, "from", &error); 164 if (error) 165 return (error); 166 167 /* 168 * If updating, check whether changing from read-only to 169 * read/write. 170 */ 171 if (mp->mnt_flag & MNT_UPDATE) { 172 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) { 173 /* Process export requests in vfs_mount.c */ 174 goto success; 175 } else { 176 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 177 err = EINVAL; 178 goto error_1; 179 } 180 } 181 182 /* 183 * Not an update, or updating the name: look up the name 184 * and verify that it refers to a sensible block device. 185 */ 186 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, curthread); 187 err = namei(&ndp); 188 if (err) { 189 /* can't get devvp!*/ 190 goto error_1; 191 } 192 NDFREE(&ndp, NDF_ONLY_PNBUF); 193 devvp = ndp.ni_vp; 194 195 if (!vn_isdisk(devvp, &err)) { 196 vput(devvp); 197 return (err); 198 } 199 200 if (mp->mnt_flag & MNT_UPDATE) { 201 #if 0 202 /* 203 ******************** 204 * UPDATE 205 ******************** 206 */ 207 208 if (devvp != ntmp->um_devvp) 209 err = EINVAL; /* needs translation */ 210 vput(devvp); 211 if (err) 212 return (err); 213 #endif 214 } else { 215 /* 216 ******************** 217 * NEW MOUNT 218 ******************** 219 */ 220 221 /* 222 * Since this is a new mount, we want the names for 223 * the device and the mount point copied in. If an 224 * error occurs, the mountpoint is discarded by the 225 * upper level code. Note that vfs_mount() handles 226 * copying the mountpoint f_mntonname for us, so we 227 * don't have to do it here unless we want to set it 228 * to something other than "path" for some rason. 229 */ 230 /* Save "mounted from" info for mount point (NULL pad)*/ 231 vfs_mountedfrom(mp, from); 232 233 err = ntfs_mountfs(devvp, mp, curthread); 234 } 235 if (err) { 236 vrele(devvp); 237 return (err); 238 } 239 240 goto success; 241 242 error_1: /* no state to back out*/ 243 /* XXX: missing NDFREE(&ndp, ...) */ 244 245 success: 246 return(err); 247 } 248 249 /* 250 * Common code for mount and mountroot 251 */ 252 int 253 ntfs_mountfs(devvp, mp, td) 254 register struct vnode *devvp; 255 struct mount *mp; 256 struct thread *td; 257 { 258 struct buf *bp; 259 struct ntfsmount *ntmp; 260 struct cdev *dev = devvp->v_rdev; 261 int error, ronly, i, v; 262 struct vnode *vp; 263 struct g_consumer *cp; 264 struct g_provider *pp; 265 char *cs_ntfs, *cs_local; 266 267 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 268 DROP_GIANT(); 269 g_topology_lock(); 270 271 /* 272 * XXX: Do not allow more than one consumer to open a device 273 * associated with a particular GEOM provider. 274 * This disables multiple read-only mounts of a device, 275 * but it gets rid of panics in vget() when you try to 276 * mount the same device more than once. 277 */ 278 pp = g_dev_getprovider(devvp->v_rdev); 279 if ((pp != NULL) && ((pp->acr | pp->acw | pp->ace ) != 0)) 280 error = EPERM; 281 else 282 error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1); 283 284 g_topology_unlock(); 285 PICKUP_GIANT(); 286 VOP_UNLOCK(devvp, 0); 287 if (error) 288 return (error); 289 290 bp = NULL; 291 292 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 293 if (error) 294 goto out; 295 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO); 296 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 297 /* 298 * We must not cache the boot block if its size is not exactly 299 * one cluster in order to avoid confusing the buffer cache when 300 * the boot file is read later by ntfs_readntvattr_plain(), which 301 * reads a cluster at a time. 302 */ 303 if (ntfs_cntob(1) != BBSIZE) 304 bp->b_flags |= B_NOCACHE; 305 brelse( bp ); 306 bp = NULL; 307 308 if (strncmp((const char *)ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 309 error = EINVAL; 310 dprintf(("ntfs_mountfs: invalid boot block\n")); 311 goto out; 312 } 313 314 { 315 int8_t cpr = ntmp->ntm_mftrecsz; 316 if( cpr > 0 ) 317 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 318 else 319 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 320 } 321 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 322 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 323 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 324 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 325 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 326 327 ntmp->ntm_mountp = mp; 328 ntmp->ntm_devvp = devvp; 329 if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v)) 330 ntmp->ntm_uid = v; 331 if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v)) 332 ntmp->ntm_gid = v; 333 if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v)) 334 ntmp->ntm_mode = v & ACCESSPERMS; 335 vfs_flagopt(mp->mnt_optnew, 336 "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS); 337 vfs_flagopt(mp->mnt_optnew, 338 "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES); 339 ntmp->ntm_cp = cp; 340 ntmp->ntm_bo = &devvp->v_bufobj; 341 342 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error); 343 if (error && error != ENOENT) 344 goto out; 345 cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error); 346 if (error && error != ENOENT) 347 goto out; 348 /* Copy in the 8-bit to Unicode conversion table */ 349 /* Initialize Unicode to 8-bit table from 8toU table */ 350 ntfs_82u_init(ntmp, cs_local, cs_ntfs); 351 if (cs_local != NULL && cs_ntfs != NULL) 352 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs); 353 else 354 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs); 355 356 mp->mnt_data = ntmp; 357 358 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 359 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 360 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 361 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 362 363 /* 364 * We read in some system nodes to do not allow 365 * reclaim them and to have everytime access to them. 366 */ 367 { 368 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 369 for (i=0; i<3; i++) { 370 error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE, 371 &(ntmp->ntm_sysvn[pi[i]])); 372 if(error) 373 goto out1; 374 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 375 VREF(ntmp->ntm_sysvn[pi[i]]); 376 vput(ntmp->ntm_sysvn[pi[i]]); 377 } 378 } 379 380 /* read the Unicode lowercase --> uppercase translation table, 381 * if necessary */ 382 if ((error = ntfs_toupper_use(mp, ntmp))) 383 goto out1; 384 385 /* 386 * Scan $BitMap and count free clusters 387 */ 388 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 389 if(error) 390 goto out1; 391 392 /* 393 * Read and translate to internal format attribute 394 * definition file. 395 */ 396 { 397 int num,j; 398 struct attrdef ad; 399 400 /* Open $AttrDef */ 401 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp ); 402 if(error) 403 goto out1; 404 405 /* Count valid entries */ 406 for(num=0;;num++) { 407 error = ntfs_readattr(ntmp, VTONT(vp), 408 NTFS_A_DATA, NULL, 409 num * sizeof(ad), sizeof(ad), 410 &ad, NULL); 411 if (error) 412 goto out1; 413 if (ad.ad_name[0] == 0) 414 break; 415 } 416 417 /* Alloc memory for attribute definitions */ 418 ntmp->ntm_ad = malloc(num * sizeof(struct ntvattrdef), 419 M_NTFSMNT, M_WAITOK); 420 421 ntmp->ntm_adnum = num; 422 423 /* Read them and translate */ 424 for(i=0;i<num;i++){ 425 error = ntfs_readattr(ntmp, VTONT(vp), 426 NTFS_A_DATA, NULL, 427 i * sizeof(ad), sizeof(ad), 428 &ad, NULL); 429 if (error) 430 goto out1; 431 j = 0; 432 do { 433 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 434 } while(ad.ad_name[j++]); 435 ntmp->ntm_ad[i].ad_namelen = j - 1; 436 ntmp->ntm_ad[i].ad_type = ad.ad_type; 437 } 438 439 vput(vp); 440 } 441 442 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 443 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 444 mp->mnt_maxsymlinklen = 0; 445 MNT_ILOCK(mp); 446 mp->mnt_flag |= MNT_LOCAL; 447 MNT_IUNLOCK(mp); 448 return (0); 449 450 out1: 451 for(i=0;i<NTFS_SYSNODESNUM;i++) 452 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 453 454 if (vflush(mp, 0, 0, td)) 455 dprintf(("ntfs_mountfs: vflush failed\n")); 456 457 out: 458 if (bp) 459 brelse(bp); 460 461 DROP_GIANT(); 462 g_topology_lock(); 463 g_vfs_close(cp); 464 g_topology_unlock(); 465 PICKUP_GIANT(); 466 467 return (error); 468 } 469 470 static int 471 ntfs_unmount( 472 struct mount *mp, 473 int mntflags) 474 { 475 struct thread *td; 476 struct ntfsmount *ntmp; 477 int error, flags, i; 478 479 dprintf(("ntfs_unmount: unmounting...\n")); 480 td = curthread; 481 ntmp = VFSTONTFS(mp); 482 483 flags = 0; 484 if(mntflags & MNT_FORCE) 485 flags |= FORCECLOSE; 486 487 dprintf(("ntfs_unmount: vflushing...\n")); 488 error = vflush(mp, 0, flags | SKIPSYSTEM, td); 489 if (error) { 490 printf("ntfs_unmount: vflush failed: %d\n",error); 491 return (error); 492 } 493 494 /* Check if only system vnodes are rest */ 495 for(i=0;i<NTFS_SYSNODESNUM;i++) 496 if((ntmp->ntm_sysvn[i]) && 497 (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY); 498 499 /* Dereference all system vnodes */ 500 for(i=0;i<NTFS_SYSNODESNUM;i++) 501 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 502 503 /* vflush system vnodes */ 504 error = vflush(mp, 0, flags, td); 505 if (error) 506 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 507 508 vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0); 509 510 DROP_GIANT(); 511 g_topology_lock(); 512 g_vfs_close(ntmp->ntm_cp); 513 g_topology_unlock(); 514 PICKUP_GIANT(); 515 516 vrele(ntmp->ntm_devvp); 517 518 /* free the toupper table, if this has been last mounted ntfs volume */ 519 ntfs_toupper_unuse(); 520 521 dprintf(("ntfs_umount: freeing memory...\n")); 522 ntfs_u28_uninit(ntmp); 523 ntfs_82u_uninit(ntmp); 524 mp->mnt_data = NULL; 525 MNT_ILOCK(mp); 526 mp->mnt_flag &= ~MNT_LOCAL; 527 MNT_IUNLOCK(mp); 528 free(ntmp->ntm_ad, M_NTFSMNT); 529 free(ntmp, M_NTFSMNT); 530 return (error); 531 } 532 533 static int 534 ntfs_root( 535 struct mount *mp, 536 int flags, 537 struct vnode **vpp) 538 { 539 struct vnode *nvp; 540 int error = 0; 541 542 dprintf(("ntfs_root(): sysvn: %p\n", 543 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 544 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp); 545 if(error) { 546 printf("ntfs_root: VFS_VGET failed: %d\n",error); 547 return (error); 548 } 549 550 *vpp = nvp; 551 return (0); 552 } 553 554 static int 555 ntfs_calccfree( 556 struct ntfsmount *ntmp, 557 cn_t *cfreep) 558 { 559 struct vnode *vp; 560 u_int8_t *tmp; 561 int j, error; 562 long cfree = 0; 563 size_t bmsize, i; 564 565 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 566 567 bmsize = VTOF(vp)->f_size; 568 569 tmp = malloc(bmsize, M_TEMP, M_WAITOK); 570 571 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 572 0, bmsize, tmp, NULL); 573 if (error) 574 goto out; 575 576 for(i=0;i<bmsize;i++) 577 for(j=0;j<8;j++) 578 if(~tmp[i] & (1 << j)) cfree++; 579 *cfreep = cfree; 580 581 out: 582 free(tmp, M_TEMP); 583 return(error); 584 } 585 586 static int 587 ntfs_statfs( 588 struct mount *mp, 589 struct statfs *sbp) 590 { 591 struct ntfsmount *ntmp = VFSTONTFS(mp); 592 u_int64_t mftsize,mftallocated; 593 594 dprintf(("ntfs_statfs():\n")); 595 596 mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size; 597 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 598 599 sbp->f_type = mp->mnt_vfc->vfc_typenum; 600 sbp->f_bsize = ntmp->ntm_bps; 601 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 602 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 603 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 604 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec; 605 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 606 sbp->f_ffree; 607 sbp->f_flags = mp->mnt_flag; 608 609 return (0); 610 } 611 612 /*ARGSUSED*/ 613 static int 614 ntfs_fhtovp( 615 struct mount *mp, 616 struct fid *fhp, 617 struct vnode **vpp) 618 { 619 struct vnode *nvp; 620 struct ntfid *ntfhp = (struct ntfid *)fhp; 621 int error; 622 623 ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino)); 624 625 if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) { 626 *vpp = NULLVP; 627 return (error); 628 } 629 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 630 * with NTFS, we don't need to check anything else for now */ 631 *vpp = nvp; 632 vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread); 633 return (0); 634 } 635 636 int 637 ntfs_vgetex( 638 struct mount *mp, 639 ino_t ino, 640 u_int32_t attrtype, 641 char *attrname, 642 u_long lkflags, 643 u_long flags, 644 struct thread *td, 645 struct vnode **vpp) 646 { 647 int error; 648 register struct ntfsmount *ntmp; 649 struct ntnode *ip; 650 struct fnode *fp; 651 struct vnode *vp; 652 enum vtype f_type; 653 654 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 655 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 656 (u_long)flags)); 657 658 ntmp = VFSTONTFS(mp); 659 *vpp = NULL; 660 661 /* Get ntnode */ 662 error = ntfs_ntlookup(ntmp, ino, &ip); 663 if (error) { 664 printf("ntfs_vget: ntfs_ntget failed\n"); 665 return (error); 666 } 667 668 /* It may be not initialized fully, so force load it */ 669 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 670 error = ntfs_loadntnode(ntmp, ip); 671 if(error) { 672 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 673 ip->i_number); 674 ntfs_ntput(ip); 675 return (error); 676 } 677 } 678 679 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 680 if (error) { 681 printf("ntfs_vget: ntfs_fget failed\n"); 682 ntfs_ntput(ip); 683 return (error); 684 } 685 686 f_type = VNON; 687 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 688 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 689 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 690 f_type = VDIR; 691 } else if (flags & VG_EXT) { 692 f_type = VNON; 693 fp->f_size = fp->f_allocated = 0; 694 } else { 695 f_type = VREG; 696 697 error = ntfs_filesize(ntmp, fp, 698 &fp->f_size, &fp->f_allocated); 699 if (error) { 700 ntfs_ntput(ip); 701 return (error); 702 } 703 } 704 705 fp->f_flag |= FN_VALID; 706 } 707 708 if (FTOV(fp)) { 709 vget(FTOV(fp), lkflags, td); 710 *vpp = FTOV(fp); 711 ntfs_ntput(ip); 712 return (0); 713 } 714 715 error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp); 716 if(error) { 717 ntfs_frele(fp); 718 ntfs_ntput(ip); 719 return (error); 720 } 721 /* XXX: Too early for mpsafe fs, lacks vnode lock */ 722 error = insmntque(vp, ntmp->ntm_mountp); 723 if (error) { 724 ntfs_frele(fp); 725 ntfs_ntput(ip); 726 return (error); 727 } 728 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 729 730 fp->f_vp = vp; 731 vp->v_data = fp; 732 vp->v_type = f_type; 733 734 vp->v_bufobj.bo_ops = &ntfs_vnbufops; 735 vp->v_bufobj.bo_private = vp; 736 737 if (ino == NTFS_ROOTINO) 738 vp->v_vflag |= VV_ROOT; 739 740 ntfs_ntput(ip); 741 742 if (lkflags & LK_TYPE_MASK) { 743 error = vn_lock(vp, lkflags); 744 if (error) { 745 vput(vp); 746 return (error); 747 } 748 } 749 750 *vpp = vp; 751 return (0); 752 753 } 754 755 static int 756 ntfs_vget( 757 struct mount *mp, 758 ino_t ino, 759 int lkflags, 760 struct vnode **vpp) 761 { 762 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0, 763 curthread, vpp); 764 } 765 766 static void 767 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp) 768 { 769 struct vnode *vp; 770 int rc; 771 772 vp = bo->bo_private; 773 KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p", 774 vp, &vp->v_bufobj, bo)); 775 rc = VOP_STRATEGY(vp, bp); 776 KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, " 777 "vp=%p, rc=%d", bp, vp, rc)); 778 } 779 780 static struct vfsops ntfs_vfsops = { 781 .vfs_fhtovp = ntfs_fhtovp, 782 .vfs_init = ntfs_init, 783 .vfs_cmount = ntfs_cmount, 784 .vfs_mount = ntfs_mount, 785 .vfs_root = ntfs_root, 786 .vfs_statfs = ntfs_statfs, 787 .vfs_uninit = ntfs_uninit, 788 .vfs_unmount = ntfs_unmount, 789 .vfs_vget = ntfs_vget, 790 }; 791 VFS_SET(ntfs_vfsops, ntfs, 0); 792 MODULE_VERSION(ntfs, 1);
Cache object: 588f8e4cb7d002340c326a5debf73ab3
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