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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 * $FreeBSD$ 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/systm.h> 45 46 #include <geom/geom.h> 47 #include <geom/geom_vfs.h> 48 49 #include <vm/vm.h> 50 #include <vm/vm_param.h> 51 #include <vm/vm_page.h> 52 #include <vm/vm_object.h> 53 #include <vm/vm_extern.h> 54 55 /*#define NTFS_DEBUG 1*/ 56 #include <fs/ntfs/ntfs.h> 57 #include <fs/ntfs/ntfs_inode.h> 58 #include <fs/ntfs/ntfs_subr.h> 59 #include <fs/ntfs/ntfs_vfsops.h> 60 #include <fs/ntfs/ntfs_ihash.h> 61 #include <fs/ntfs/ntfsmount.h> 62 63 static MALLOC_DEFINE(M_NTFSMNT, "ntfs_mount", "NTFS mount structure"); 64 MALLOC_DEFINE(M_NTFSNTNODE,"ntfs_ntnode", "NTFS ntnode information"); 65 MALLOC_DEFINE(M_NTFSFNODE,"ntfs_fnode", "NTFS fnode information"); 66 MALLOC_DEFINE(M_NTFSDIR,"ntfs_dir", "NTFS dir buffer"); 67 68 struct sockaddr; 69 70 static int ntfs_mountfs(register struct vnode *, struct mount *, 71 struct thread *); 72 static int ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep); 73 74 static vfs_init_t ntfs_init; 75 static vfs_uninit_t ntfs_uninit; 76 static vfs_vget_t ntfs_vget; 77 static vfs_fhtovp_t ntfs_fhtovp; 78 static vfs_cmount_t ntfs_cmount; 79 static vfs_mount_t ntfs_mount; 80 static vfs_root_t ntfs_root; 81 static vfs_statfs_t ntfs_statfs; 82 static vfs_unmount_t ntfs_unmount; 83 84 static b_strategy_t ntfs_bufstrategy; 85 86 /* 87 * Buffer operations for NTFS vnodes. 88 * We punt on VOP_BMAP, so we need to do 89 * strategy on the file's vnode rather 90 * than the underlying device's 91 */ 92 static struct buf_ops ntfs_vnbufops = { 93 .bop_name = "NTFS", 94 .bop_strategy = ntfs_bufstrategy, 95 }; 96 97 static int 98 ntfs_init ( 99 struct vfsconf *vcp ) 100 { 101 ntfs_nthashinit(); 102 ntfs_toupper_init(); 103 return 0; 104 } 105 106 static int 107 ntfs_uninit ( 108 struct vfsconf *vcp ) 109 { 110 ntfs_toupper_destroy(); 111 ntfs_nthashdestroy(); 112 return 0; 113 } 114 115 static int 116 ntfs_cmount ( 117 struct mntarg *ma, 118 void *data, 119 int flags, 120 struct thread *td ) 121 { 122 int error; 123 struct ntfs_args args; 124 125 error = copyin(data, (caddr_t)&args, sizeof args); 126 if (error) 127 return (error); 128 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN); 129 ma = mount_arg(ma, "export", &args.export, sizeof args.export); 130 ma = mount_argf(ma, "uid", "%d", args.uid); 131 ma = mount_argf(ma, "gid", "%d", args.gid); 132 ma = mount_argf(ma, "mode", "%d", args.mode); 133 ma = mount_argb(ma, args.flag & NTFS_MFLAG_CASEINS, "nocaseins"); 134 ma = mount_argb(ma, args.flag & NTFS_MFLAG_ALLNAMES, "noallnames"); 135 if (args.flag & NTFS_MFLAG_KICONV) { 136 ma = mount_argsu(ma, "cs_ntfs", args.cs_ntfs, 64); 137 ma = mount_argsu(ma, "cs_local", args.cs_local, 64); 138 } 139 140 error = kernel_mount(ma, flags); 141 142 return (error); 143 } 144 145 static const char *ntfs_opts[] = { 146 "from", "export", "uid", "gid", "mode", "caseins", "allnames", 147 "kiconv", "cs_ntfs", "cs_local", NULL 148 }; 149 150 static int 151 ntfs_mount ( 152 struct mount *mp, 153 struct thread *td ) 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, td); 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, td); 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, td); 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; 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 = (qaddr_t)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 MALLOC(ntmp->ntm_ad, struct ntvattrdef *, 419 num * sizeof(struct ntvattrdef), 420 M_NTFSMNT, M_WAITOK); 421 422 ntmp->ntm_adnum = num; 423 424 /* Read them and translate */ 425 for(i=0;i<num;i++){ 426 error = ntfs_readattr(ntmp, VTONT(vp), 427 NTFS_A_DATA, NULL, 428 i * sizeof(ad), sizeof(ad), 429 &ad, NULL); 430 if (error) 431 goto out1; 432 j = 0; 433 do { 434 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 435 } while(ad.ad_name[j++]); 436 ntmp->ntm_ad[i].ad_namelen = j - 1; 437 ntmp->ntm_ad[i].ad_type = ad.ad_type; 438 } 439 440 vput(vp); 441 } 442 443 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 444 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 445 mp->mnt_maxsymlinklen = 0; 446 MNT_ILOCK(mp); 447 mp->mnt_flag |= MNT_LOCAL; 448 MNT_IUNLOCK(mp); 449 return (0); 450 451 out1: 452 for(i=0;i<NTFS_SYSNODESNUM;i++) 453 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 454 455 if (vflush(mp, 0, 0, td)) 456 dprintf(("ntfs_mountfs: vflush failed\n")); 457 458 out: 459 if (bp) 460 brelse(bp); 461 462 DROP_GIANT(); 463 g_topology_lock(); 464 g_vfs_close(cp, td); 465 g_topology_unlock(); 466 PICKUP_GIANT(); 467 468 return (error); 469 } 470 471 static int 472 ntfs_unmount( 473 struct mount *mp, 474 int mntflags, 475 struct thread *td) 476 { 477 struct ntfsmount *ntmp; 478 int error, flags, i; 479 480 dprintf(("ntfs_unmount: unmounting...\n")); 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, td, 0, 0); 509 510 DROP_GIANT(); 511 g_topology_lock(); 512 g_vfs_close(ntmp->ntm_cp, td); 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 = (qaddr_t)0; 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 struct thread *td ) 539 { 540 struct vnode *nvp; 541 int error = 0; 542 543 dprintf(("ntfs_root(): sysvn: %p\n", 544 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 545 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp); 546 if(error) { 547 printf("ntfs_root: VFS_VGET failed: %d\n",error); 548 return (error); 549 } 550 551 *vpp = nvp; 552 return (0); 553 } 554 555 static int 556 ntfs_calccfree( 557 struct ntfsmount *ntmp, 558 cn_t *cfreep) 559 { 560 struct vnode *vp; 561 u_int8_t *tmp; 562 int j, error; 563 long cfree = 0; 564 size_t bmsize, i; 565 566 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 567 568 bmsize = VTOF(vp)->f_size; 569 570 MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK); 571 572 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 573 0, bmsize, tmp, NULL); 574 if (error) 575 goto out; 576 577 for(i=0;i<bmsize;i++) 578 for(j=0;j<8;j++) 579 if(~tmp[i] & (1 << j)) cfree++; 580 *cfreep = cfree; 581 582 out: 583 FREE(tmp, M_TEMP); 584 return(error); 585 } 586 587 static int 588 ntfs_statfs( 589 struct mount *mp, 590 struct statfs *sbp, 591 struct thread *td) 592 { 593 struct ntfsmount *ntmp = VFSTONTFS(mp); 594 u_int64_t mftsize,mftallocated; 595 596 dprintf(("ntfs_statfs():\n")); 597 598 mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size; 599 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 600 601 sbp->f_type = mp->mnt_vfc->vfc_typenum; 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_bfree / ntmp->ntm_bpmftrec; 607 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 608 sbp->f_ffree; 609 sbp->f_flags = mp->mnt_flag; 610 611 return (0); 612 } 613 614 /*ARGSUSED*/ 615 static int 616 ntfs_fhtovp( 617 struct mount *mp, 618 struct fid *fhp, 619 struct vnode **vpp) 620 { 621 struct vnode *nvp; 622 struct ntfid *ntfhp = (struct ntfid *)fhp; 623 int error; 624 625 ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino)); 626 627 if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) { 628 *vpp = NULLVP; 629 return (error); 630 } 631 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 632 * with NTFS, we don't need to check anything else for now */ 633 *vpp = nvp; 634 vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread); 635 return (0); 636 } 637 638 int 639 ntfs_vgetex( 640 struct mount *mp, 641 ino_t ino, 642 u_int32_t attrtype, 643 char *attrname, 644 u_long lkflags, 645 u_long flags, 646 struct thread *td, 647 struct vnode **vpp) 648 { 649 int error; 650 register struct ntfsmount *ntmp; 651 struct ntnode *ip; 652 struct fnode *fp; 653 struct vnode *vp; 654 enum vtype f_type; 655 656 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 657 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 658 (u_long)flags)); 659 660 ntmp = VFSTONTFS(mp); 661 *vpp = NULL; 662 663 /* Get ntnode */ 664 error = ntfs_ntlookup(ntmp, ino, &ip); 665 if (error) { 666 printf("ntfs_vget: ntfs_ntget failed\n"); 667 return (error); 668 } 669 670 /* It may be not initialized fully, so force load it */ 671 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 672 error = ntfs_loadntnode(ntmp, ip); 673 if(error) { 674 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 675 ip->i_number); 676 ntfs_ntput(ip); 677 return (error); 678 } 679 } 680 681 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 682 if (error) { 683 printf("ntfs_vget: ntfs_fget failed\n"); 684 ntfs_ntput(ip); 685 return (error); 686 } 687 688 f_type = VNON; 689 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 690 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 691 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 692 f_type = VDIR; 693 } else if (flags & VG_EXT) { 694 f_type = VNON; 695 fp->f_size = fp->f_allocated = 0; 696 } else { 697 f_type = VREG; 698 699 error = ntfs_filesize(ntmp, fp, 700 &fp->f_size, &fp->f_allocated); 701 if (error) { 702 ntfs_ntput(ip); 703 return (error); 704 } 705 } 706 707 fp->f_flag |= FN_VALID; 708 } 709 710 if (FTOV(fp)) { 711 vget(FTOV(fp), lkflags, td); 712 *vpp = FTOV(fp); 713 ntfs_ntput(ip); 714 return (0); 715 } 716 717 error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp); 718 if(error) { 719 ntfs_frele(fp); 720 ntfs_ntput(ip); 721 return (error); 722 } 723 /* XXX: Too early for mpsafe fs, lacks vnode lock */ 724 error = insmntque(vp, ntmp->ntm_mountp); 725 if (error) { 726 ntfs_frele(fp); 727 ntfs_ntput(ip); 728 return (error); 729 } 730 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 731 732 fp->f_vp = vp; 733 vp->v_data = fp; 734 vp->v_type = f_type; 735 736 vp->v_bufobj.bo_ops = &ntfs_vnbufops; 737 vp->v_bufobj.bo_private = vp; 738 739 if (ino == NTFS_ROOTINO) 740 vp->v_vflag |= VV_ROOT; 741 742 ntfs_ntput(ip); 743 744 if (lkflags & LK_TYPE_MASK) { 745 error = vn_lock(vp, lkflags, td); 746 if (error) { 747 vput(vp); 748 return (error); 749 } 750 } 751 752 *vpp = vp; 753 return (0); 754 755 } 756 757 static int 758 ntfs_vget( 759 struct mount *mp, 760 ino_t ino, 761 int lkflags, 762 struct vnode **vpp) 763 { 764 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0, 765 curthread, vpp); 766 } 767 768 static void 769 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp) 770 { 771 struct vnode *vp; 772 int rc; 773 774 vp = bo->bo_private; 775 KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p", 776 vp, &vp->v_bufobj, bo)); 777 rc = VOP_STRATEGY(vp, bp); 778 KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, " 779 "vp=%p, rc=%d", bp, vp, rc)); 780 } 781 782 static struct vfsops ntfs_vfsops = { 783 .vfs_fhtovp = ntfs_fhtovp, 784 .vfs_init = ntfs_init, 785 .vfs_cmount = ntfs_cmount, 786 .vfs_mount = ntfs_mount, 787 .vfs_root = ntfs_root, 788 .vfs_statfs = ntfs_statfs, 789 .vfs_uninit = ntfs_uninit, 790 .vfs_unmount = ntfs_unmount, 791 .vfs_vget = ntfs_vget, 792 }; 793 VFS_SET(ntfs_vfsops, ntfs, 0); 794 MODULE_VERSION(ntfs, 1);
Cache object: 48faaf90e8f82f507ae83ca07a891f8e
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