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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/8.1/sys/fs/ntfs/ntfs_vfsops.c 191990 2009-05-11 15:33:26Z attilio $ 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 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 (struct mount *mp) 152 { 153 int err = 0, error; 154 struct vnode *devvp; 155 struct nameidata ndp; 156 char *from; 157 158 if (vfs_filteropt(mp->mnt_optnew, ntfs_opts)) 159 return (EINVAL); 160 161 from = vfs_getopts(mp->mnt_optnew, "from", &error); 162 if (error) 163 return (error); 164 165 /* 166 * If updating, check whether changing from read-only to 167 * read/write. 168 */ 169 if (mp->mnt_flag & MNT_UPDATE) { 170 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) { 171 /* Process export requests in vfs_mount.c */ 172 goto success; 173 } else { 174 printf("ntfs_mount(): MNT_UPDATE not supported\n"); 175 err = EINVAL; 176 goto error_1; 177 } 178 } 179 180 /* 181 * Not an update, or updating the name: look up the name 182 * and verify that it refers to a sensible block device. 183 */ 184 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, curthread); 185 err = namei(&ndp); 186 if (err) { 187 /* can't get devvp!*/ 188 goto error_1; 189 } 190 NDFREE(&ndp, NDF_ONLY_PNBUF); 191 devvp = ndp.ni_vp; 192 193 if (!vn_isdisk(devvp, &err)) { 194 vput(devvp); 195 return (err); 196 } 197 198 if (mp->mnt_flag & MNT_UPDATE) { 199 #if 0 200 /* 201 ******************** 202 * UPDATE 203 ******************** 204 */ 205 206 if (devvp != ntmp->um_devvp) 207 err = EINVAL; /* needs translation */ 208 vput(devvp); 209 if (err) 210 return (err); 211 #endif 212 } else { 213 /* 214 ******************** 215 * NEW MOUNT 216 ******************** 217 */ 218 219 /* 220 * Since this is a new mount, we want the names for 221 * the device and the mount point copied in. If an 222 * error occurs, the mountpoint is discarded by the 223 * upper level code. Note that vfs_mount() handles 224 * copying the mountpoint f_mntonname for us, so we 225 * don't have to do it here unless we want to set it 226 * to something other than "path" for some rason. 227 */ 228 /* Save "mounted from" info for mount point (NULL pad)*/ 229 vfs_mountedfrom(mp, from); 230 231 err = ntfs_mountfs(devvp, mp, curthread); 232 } 233 if (err) { 234 vrele(devvp); 235 return (err); 236 } 237 238 goto success; 239 240 error_1: /* no state to back out*/ 241 /* XXX: missing NDFREE(&ndp, ...) */ 242 243 success: 244 return(err); 245 } 246 247 /* 248 * Common code for mount and mountroot 249 */ 250 int 251 ntfs_mountfs(devvp, mp, td) 252 register struct vnode *devvp; 253 struct mount *mp; 254 struct thread *td; 255 { 256 struct buf *bp; 257 struct ntfsmount *ntmp; 258 struct cdev *dev = devvp->v_rdev; 259 int error, ronly, i, v; 260 struct vnode *vp; 261 struct g_consumer *cp; 262 struct g_provider *pp; 263 char *cs_ntfs, *cs_local; 264 265 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 266 DROP_GIANT(); 267 g_topology_lock(); 268 269 /* 270 * XXX: Do not allow more than one consumer to open a device 271 * associated with a particular GEOM provider. 272 * This disables multiple read-only mounts of a device, 273 * but it gets rid of panics in vget() when you try to 274 * mount the same device more than once. 275 */ 276 pp = g_dev_getprovider(devvp->v_rdev); 277 if ((pp != NULL) && ((pp->acr | pp->acw | pp->ace ) != 0)) 278 error = EPERM; 279 else 280 error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1); 281 282 g_topology_unlock(); 283 PICKUP_GIANT(); 284 VOP_UNLOCK(devvp, 0); 285 if (error) 286 return (error); 287 288 bp = NULL; 289 290 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); 291 if (error) 292 goto out; 293 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO); 294 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) ); 295 /* 296 * We must not cache the boot block if its size is not exactly 297 * one cluster in order to avoid confusing the buffer cache when 298 * the boot file is read later by ntfs_readntvattr_plain(), which 299 * reads a cluster at a time. 300 */ 301 if (ntfs_cntob(1) != BBSIZE) 302 bp->b_flags |= B_NOCACHE; 303 brelse( bp ); 304 bp = NULL; 305 306 if (strncmp((const char *)ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { 307 error = EINVAL; 308 dprintf(("ntfs_mountfs: invalid boot block\n")); 309 goto out; 310 } 311 312 { 313 int8_t cpr = ntmp->ntm_mftrecsz; 314 if( cpr > 0 ) 315 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; 316 else 317 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; 318 } 319 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", 320 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, 321 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); 322 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", 323 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); 324 325 ntmp->ntm_mountp = mp; 326 ntmp->ntm_devvp = devvp; 327 if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v)) 328 ntmp->ntm_uid = v; 329 if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v)) 330 ntmp->ntm_gid = v; 331 if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v)) 332 ntmp->ntm_mode = v & ACCESSPERMS; 333 vfs_flagopt(mp->mnt_optnew, 334 "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS); 335 vfs_flagopt(mp->mnt_optnew, 336 "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES); 337 ntmp->ntm_cp = cp; 338 ntmp->ntm_bo = &devvp->v_bufobj; 339 340 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error); 341 if (error && error != ENOENT) 342 goto out; 343 cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error); 344 if (error && error != ENOENT) 345 goto out; 346 /* Copy in the 8-bit to Unicode conversion table */ 347 /* Initialize Unicode to 8-bit table from 8toU table */ 348 ntfs_82u_init(ntmp, cs_local, cs_ntfs); 349 if (cs_local != NULL && cs_ntfs != NULL) 350 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs); 351 else 352 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs); 353 354 mp->mnt_data = ntmp; 355 356 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", 357 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", 358 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", 359 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); 360 361 /* 362 * We read in some system nodes to do not allow 363 * reclaim them and to have everytime access to them. 364 */ 365 { 366 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; 367 for (i=0; i<3; i++) { 368 error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE, 369 &(ntmp->ntm_sysvn[pi[i]])); 370 if(error) 371 goto out1; 372 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 373 VREF(ntmp->ntm_sysvn[pi[i]]); 374 vput(ntmp->ntm_sysvn[pi[i]]); 375 } 376 } 377 378 /* read the Unicode lowercase --> uppercase translation table, 379 * if necessary */ 380 if ((error = ntfs_toupper_use(mp, ntmp))) 381 goto out1; 382 383 /* 384 * Scan $BitMap and count free clusters 385 */ 386 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); 387 if(error) 388 goto out1; 389 390 /* 391 * Read and translate to internal format attribute 392 * definition file. 393 */ 394 { 395 int num,j; 396 struct attrdef ad; 397 398 /* Open $AttrDef */ 399 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp ); 400 if(error) 401 goto out1; 402 403 /* Count valid entries */ 404 for(num=0;;num++) { 405 error = ntfs_readattr(ntmp, VTONT(vp), 406 NTFS_A_DATA, NULL, 407 num * sizeof(ad), sizeof(ad), 408 &ad, NULL); 409 if (error) 410 goto out1; 411 if (ad.ad_name[0] == 0) 412 break; 413 } 414 415 /* Alloc memory for attribute definitions */ 416 ntmp->ntm_ad = malloc(num * sizeof(struct ntvattrdef), 417 M_NTFSMNT, M_WAITOK); 418 419 ntmp->ntm_adnum = num; 420 421 /* Read them and translate */ 422 for(i=0;i<num;i++){ 423 error = ntfs_readattr(ntmp, VTONT(vp), 424 NTFS_A_DATA, NULL, 425 i * sizeof(ad), sizeof(ad), 426 &ad, NULL); 427 if (error) 428 goto out1; 429 j = 0; 430 do { 431 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; 432 } while(ad.ad_name[j++]); 433 ntmp->ntm_ad[i].ad_namelen = j - 1; 434 ntmp->ntm_ad[i].ad_type = ad.ad_type; 435 } 436 437 vput(vp); 438 } 439 440 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 441 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 442 mp->mnt_maxsymlinklen = 0; 443 MNT_ILOCK(mp); 444 mp->mnt_flag |= MNT_LOCAL; 445 MNT_IUNLOCK(mp); 446 return (0); 447 448 out1: 449 for(i=0;i<NTFS_SYSNODESNUM;i++) 450 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 451 452 if (vflush(mp, 0, 0, td)) 453 dprintf(("ntfs_mountfs: vflush failed\n")); 454 455 out: 456 if (bp) 457 brelse(bp); 458 459 DROP_GIANT(); 460 g_topology_lock(); 461 g_vfs_close(cp); 462 g_topology_unlock(); 463 PICKUP_GIANT(); 464 465 return (error); 466 } 467 468 static int 469 ntfs_unmount( 470 struct mount *mp, 471 int mntflags) 472 { 473 struct thread *td; 474 struct ntfsmount *ntmp; 475 int error, flags, i; 476 477 dprintf(("ntfs_unmount: unmounting...\n")); 478 td = curthread; 479 ntmp = VFSTONTFS(mp); 480 481 flags = 0; 482 if(mntflags & MNT_FORCE) 483 flags |= FORCECLOSE; 484 485 dprintf(("ntfs_unmount: vflushing...\n")); 486 error = vflush(mp, 0, flags | SKIPSYSTEM, td); 487 if (error) { 488 printf("ntfs_unmount: vflush failed: %d\n",error); 489 return (error); 490 } 491 492 /* Check if only system vnodes are rest */ 493 for(i=0;i<NTFS_SYSNODESNUM;i++) 494 if((ntmp->ntm_sysvn[i]) && 495 (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY); 496 497 /* Dereference all system vnodes */ 498 for(i=0;i<NTFS_SYSNODESNUM;i++) 499 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); 500 501 /* vflush system vnodes */ 502 error = vflush(mp, 0, flags, td); 503 if (error) 504 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); 505 506 vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0); 507 508 DROP_GIANT(); 509 g_topology_lock(); 510 g_vfs_close(ntmp->ntm_cp); 511 g_topology_unlock(); 512 PICKUP_GIANT(); 513 514 vrele(ntmp->ntm_devvp); 515 516 /* free the toupper table, if this has been last mounted ntfs volume */ 517 ntfs_toupper_unuse(); 518 519 dprintf(("ntfs_umount: freeing memory...\n")); 520 ntfs_u28_uninit(ntmp); 521 ntfs_82u_uninit(ntmp); 522 mp->mnt_data = NULL; 523 MNT_ILOCK(mp); 524 mp->mnt_flag &= ~MNT_LOCAL; 525 MNT_IUNLOCK(mp); 526 free(ntmp->ntm_ad, M_NTFSMNT); 527 free(ntmp, M_NTFSMNT); 528 return (error); 529 } 530 531 static int 532 ntfs_root( 533 struct mount *mp, 534 int flags, 535 struct vnode **vpp) 536 { 537 struct vnode *nvp; 538 int error = 0; 539 540 dprintf(("ntfs_root(): sysvn: %p\n", 541 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); 542 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp); 543 if(error) { 544 printf("ntfs_root: VFS_VGET failed: %d\n",error); 545 return (error); 546 } 547 548 *vpp = nvp; 549 return (0); 550 } 551 552 static int 553 ntfs_calccfree( 554 struct ntfsmount *ntmp, 555 cn_t *cfreep) 556 { 557 struct vnode *vp; 558 u_int8_t *tmp; 559 int j, error; 560 long cfree = 0; 561 size_t bmsize, i; 562 563 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; 564 565 bmsize = VTOF(vp)->f_size; 566 567 tmp = malloc(bmsize, M_TEMP, M_WAITOK); 568 569 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 570 0, bmsize, tmp, NULL); 571 if (error) 572 goto out; 573 574 for(i=0;i<bmsize;i++) 575 for(j=0;j<8;j++) 576 if(~tmp[i] & (1 << j)) cfree++; 577 *cfreep = cfree; 578 579 out: 580 free(tmp, M_TEMP); 581 return(error); 582 } 583 584 static int 585 ntfs_statfs( 586 struct mount *mp, 587 struct statfs *sbp) 588 { 589 struct ntfsmount *ntmp = VFSTONTFS(mp); 590 u_int64_t mftsize,mftallocated; 591 592 dprintf(("ntfs_statfs():\n")); 593 594 mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size; 595 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; 596 597 sbp->f_type = mp->mnt_vfc->vfc_typenum; 598 sbp->f_bsize = ntmp->ntm_bps; 599 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; 600 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; 601 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); 602 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec; 603 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + 604 sbp->f_ffree; 605 sbp->f_flags = mp->mnt_flag; 606 607 return (0); 608 } 609 610 /*ARGSUSED*/ 611 static int 612 ntfs_fhtovp( 613 struct mount *mp, 614 struct fid *fhp, 615 struct vnode **vpp) 616 { 617 struct vnode *nvp; 618 struct ntfid *ntfhp = (struct ntfid *)fhp; 619 int error; 620 621 ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino)); 622 623 if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) { 624 *vpp = NULLVP; 625 return (error); 626 } 627 /* XXX as unlink/rmdir/mkdir/creat are not currently possible 628 * with NTFS, we don't need to check anything else for now */ 629 *vpp = nvp; 630 vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread); 631 return (0); 632 } 633 634 int 635 ntfs_vgetex( 636 struct mount *mp, 637 ino_t ino, 638 u_int32_t attrtype, 639 char *attrname, 640 u_long lkflags, 641 u_long flags, 642 struct thread *td, 643 struct vnode **vpp) 644 { 645 int error; 646 register struct ntfsmount *ntmp; 647 struct ntnode *ip; 648 struct fnode *fp; 649 struct vnode *vp; 650 enum vtype f_type; 651 652 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", 653 ino, attrtype, attrname?attrname:"", (u_long)lkflags, 654 (u_long)flags)); 655 656 ntmp = VFSTONTFS(mp); 657 *vpp = NULL; 658 659 /* Get ntnode */ 660 error = ntfs_ntlookup(ntmp, ino, &ip); 661 if (error) { 662 printf("ntfs_vget: ntfs_ntget failed\n"); 663 return (error); 664 } 665 666 /* It may be not initialized fully, so force load it */ 667 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { 668 error = ntfs_loadntnode(ntmp, ip); 669 if(error) { 670 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", 671 ip->i_number); 672 ntfs_ntput(ip); 673 return (error); 674 } 675 } 676 677 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); 678 if (error) { 679 printf("ntfs_vget: ntfs_fget failed\n"); 680 ntfs_ntput(ip); 681 return (error); 682 } 683 684 f_type = VNON; 685 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { 686 if ((ip->i_frflag & NTFS_FRFLAG_DIR) && 687 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { 688 f_type = VDIR; 689 } else if (flags & VG_EXT) { 690 f_type = VNON; 691 fp->f_size = fp->f_allocated = 0; 692 } else { 693 f_type = VREG; 694 695 error = ntfs_filesize(ntmp, fp, 696 &fp->f_size, &fp->f_allocated); 697 if (error) { 698 ntfs_ntput(ip); 699 return (error); 700 } 701 } 702 703 fp->f_flag |= FN_VALID; 704 } 705 706 if (FTOV(fp)) { 707 vget(FTOV(fp), lkflags, td); 708 *vpp = FTOV(fp); 709 ntfs_ntput(ip); 710 return (0); 711 } 712 713 error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp); 714 if(error) { 715 ntfs_frele(fp); 716 ntfs_ntput(ip); 717 return (error); 718 } 719 /* XXX: Too early for mpsafe fs, lacks vnode lock */ 720 error = insmntque(vp, ntmp->ntm_mountp); 721 if (error) { 722 ntfs_frele(fp); 723 ntfs_ntput(ip); 724 return (error); 725 } 726 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); 727 728 fp->f_vp = vp; 729 vp->v_data = fp; 730 vp->v_type = f_type; 731 732 vp->v_bufobj.bo_ops = &ntfs_vnbufops; 733 vp->v_bufobj.bo_private = vp; 734 735 if (ino == NTFS_ROOTINO) 736 vp->v_vflag |= VV_ROOT; 737 738 ntfs_ntput(ip); 739 740 if (lkflags & LK_TYPE_MASK) { 741 error = vn_lock(vp, lkflags); 742 if (error) { 743 vput(vp); 744 return (error); 745 } 746 } 747 748 *vpp = vp; 749 return (0); 750 751 } 752 753 static int 754 ntfs_vget( 755 struct mount *mp, 756 ino_t ino, 757 int lkflags, 758 struct vnode **vpp) 759 { 760 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0, 761 curthread, vpp); 762 } 763 764 static void 765 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp) 766 { 767 struct vnode *vp; 768 int rc; 769 770 vp = bo->bo_private; 771 KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p", 772 vp, &vp->v_bufobj, bo)); 773 rc = VOP_STRATEGY(vp, bp); 774 KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, " 775 "vp=%p, rc=%d", bp, vp, rc)); 776 } 777 778 static struct vfsops ntfs_vfsops = { 779 .vfs_fhtovp = ntfs_fhtovp, 780 .vfs_init = ntfs_init, 781 .vfs_cmount = ntfs_cmount, 782 .vfs_mount = ntfs_mount, 783 .vfs_root = ntfs_root, 784 .vfs_statfs = ntfs_statfs, 785 .vfs_uninit = ntfs_uninit, 786 .vfs_unmount = ntfs_unmount, 787 .vfs_vget = ntfs_vget, 788 }; 789 VFS_SET(ntfs_vfsops, ntfs, 0); 790 MODULE_VERSION(ntfs, 1);
Cache object: 3afcb9ed7a17157b25dd73137de403ce
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