sys/vfs/ntfs/ntfs_vfsops.c

   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_vfsops.c,v 1.20.2.5 2001/12/25 01:44:45 dillon 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 #if defined(__NetBSD__)
  44 #include <sys/device.h>
  45 #endif
  46
  47 #include <machine/inttypes.h>
  48
  49 #include <vm/vm.h>
  50 #include <vm/vm_param.h>
  51 #if defined(__NetBSD__)
  52 #include <vm/vm_prot.h>
  53 #endif
  54 #include <vm/vm_page.h>
  55 #include <vm/vm_object.h>
  56 #include <vm/vm_extern.h>
  57 #include <vm/vm_zone.h>
  58
  59 #if defined(__NetBSD__)
  60 #include <miscfs/specfs/specdev.h>
  61 #endif
  62
  63 #include <sys/buf2.h>
  64
  65 #include "ntfs.h"
  66 #include "ntfs_inode.h"
  67 #include "ntfs_subr.h"
  68 #include "ntfs_vfsops.h"
  69 #include "ntfs_ihash.h"
  70 #include "ntfsmount.h"
  71
  72 extern struct vop_ops ntfs_vnode_vops;
  73
  74 #if defined(__DragonFly__)
  75 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure");
  76 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode",  "NTFS ntnode information");
  77 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode",  "NTFS fnode information");
  78 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir",  "NTFS dir buffer");
  79 #endif
  80
  81 struct iconv_functions *ntfs_iconv = NULL;
  82
  83 static int      ntfs_root (struct mount *, struct vnode **);
  84 static int      ntfs_statfs (struct mount *, struct statfs *,
  85                                 struct ucred *cred);
  86 static int      ntfs_statvfs (struct mount *, struct statvfs *,
  87                                 struct ucred *);
  88 static int      ntfs_unmount (struct mount *, int);
  89 static int      ntfs_vget (struct mount *mp, struct vnode *dvp,
  90                                 ino_t ino, struct vnode **vpp);
  91 static int      ntfs_mountfs (struct vnode *, struct mount *,
  92                                 struct ntfs_args *, struct ucred *);
  93 static int      ntfs_vptofh (struct vnode *, struct fid *);
  94 static int      ntfs_fhtovp (struct mount *, struct vnode *rootvp,
  95                                 struct fid *, struct vnode **);
  96
  97 #if !defined (__DragonFly__)
  98 static int      ntfs_quotactl (struct mount *, int, uid_t, caddr_t,
  99                                    struct thread *);
 100 static int      ntfs_start (struct mount *, int, struct thread *);
 101 static int      ntfs_sync (struct mount *, int, struct ucred *,
 102                                struct thread *);
 103 #endif
 104
 105 #if defined(__DragonFly__)
 106 struct sockaddr;
 107 static int      ntfs_mount (struct mount *, char *, caddr_t, struct ucred *);
 108 static int      ntfs_init (struct vfsconf *);
 109 static int      ntfs_checkexp (struct mount *, struct sockaddr *,
 110                                    int *, struct ucred **);
 111 #elif defined(__NetBSD__)
 112 static int      ntfs_mount (struct mount *, const char *, void *,
 113                                 struct nameidata *, struct thread *);
 114 static void     ntfs_init (void);
 115 static int      ntfs_mountroot (void);
 116 static int      ntfs_sysctl (int *, u_int, void *, size_t *, void *,
 117                                  size_t, struct thread *);
 118 static int      ntfs_checkexp (struct mount *, struct mbuf *,
 119                                    int *, struct ucred **);
 120 #endif
 121
 122 /*
 123  * Verify a remote client has export rights and return these rights via.
 124  * exflagsp and credanonp.
 125  */
 126 static int
 127 ntfs_checkexp(struct mount *mp,
 128 #if defined(__DragonFly__)
 129               struct sockaddr *nam,
 130 #else /* defined(__NetBSD__) */
 131               struct mbuf *nam,
 132 #endif
 133               int *exflagsp, struct ucred **credanonp)
 134 {
 135         struct netcred *np;
 136         struct ntfsmount *ntm = VFSTONTFS(mp);
 137
 138         /*
 139          * Get the export permission structure for this <mp, client> tuple.
 140          */
 141         np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
 142         if (np == NULL)
 143                 return (EACCES);
 144
 145         *exflagsp = np->netc_exflags;
 146         *credanonp = &np->netc_anon;
 147         return (0);
 148 }
 149
 150 #if defined(__NetBSD__)
 151 /*ARGSUSED*/
 152 static int
 153 ntfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
 154             size_t newlen, struct thread *td)
 155 {
 156         return (EINVAL);
 157 }
 158
 159 static int
 160 ntfs_mountroot(void)
 161 {
 162         struct mount *mp;
 163         struct vnode *rootvp;
 164         struct thread *td = curthread;  /* XXX */
 165         struct ntfs_args args;
 166         int error;
 167
 168         if (root_device->dv_class != DV_DISK)
 169                 return (ENODEV);
 170
 171         /*
 172          * Get vnodes for rootdev.
 173          */
 174         if (bdevvp(rootdev, &rootvp))
 175                 panic("ntfs_mountroot: can't setup rootvp");
 176
 177         if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) {
 178                 vrele(rootvp);
 179                 return (error);
 180         }
 181
 182         args.flag = 0;
 183         args.uid = 0;
 184         args.gid = 0;
 185         args.mode = 0777;
 186
 187         if ((error = ntfs_mountfs(rootvp, mp, &args, proc0.p_ucred)) != 0) {
 188                 mp->mnt_op->vfs_refcount--;
 189                 vfs_unbusy(mp);
 190                 kfree(mp, M_MOUNT);
 191                 vrele(rootvp);
 192                 return (error);
 193         }
 194         mountlist_insert(mp, MNTINS_LAST);
 195         (void)ntfs_statfs(mp, &mp->mnt_stat, proc0.p_ucred);
 196         vfs_unbusy(mp);
 197         return (0);
 198 }
 199
 200 static void
 201 ntfs_init(void)
 202 {
 203         ntfs_nthashinit();
 204         ntfs_toupper_init();
 205 }
 206
 207 #elif defined(__DragonFly__)
 208
 209 static int
 210 ntfs_init(struct vfsconf *vcp)
 211 {
 212         ntfs_nthashinit();
 213         ntfs_toupper_init();
 214         return 0;
 215 }
 216
 217 #endif /* NetBSD */
 218
 219 static int
 220 ntfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
 221 {
 222         size_t          size;
 223         int             error;
 224         struct vnode    *devvp;
 225         struct ntfs_args args;
 226         struct nlookupdata nd;
 227         struct vnode *rootvp;
 228
 229         error = 0;
 230 #ifdef __DragonFly__
 231         /*
 232          * Use NULL path to flag a root mount
 233          */
 234         if( path == NULL) {
 235                 /*
 236                  ***
 237                  * Mounting root file system
 238                  ***
 239                  */
 240
 241                 /* Get vnode for root device*/
 242                 if( bdevvp( rootdev, &rootvp))
 243                         panic("ffs_mountroot: can't setup bdevvp for root");
 244
 245                 /*
 246                  * FS specific handling
 247                  */
 248                 mp->mnt_flag |= MNT_RDONLY;     /* XXX globally applicable?*/
 249
 250                 /*
 251                  * Attempt mount
 252                  */
 253                 if( ( error = ntfs_mountfs(rootvp, mp, &args, cred)) != 0) {
 254                         /* fs specific cleanup (if any)*/
 255                         goto error_1;
 256                 }
 257
 258                 goto dostatfs;          /* success*/
 259
 260         }
 261 #endif /* FreeBSD */
 262
 263         /*
 264          ***
 265          * Mounting non-root file system or updating a file system
 266          ***
 267          */
 268
 269         /* copy in user arguments*/
 270         error = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
 271         if (error)
 272                 goto error_1;           /* can't get arguments*/
 273
 274         /*
 275          * If updating, check whether changing from read-only to
 276          * read/write; if there is no device name, that's all we do.
 277          */
 278         if (mp->mnt_flag & MNT_UPDATE) {
 279                 /* if not updating name...*/
 280                 if (args.fspec == NULL) {
 281                         /*
 282                          * Process export requests.  Jumping to "success"
 283                          * will return the vfs_export() error code.
 284                          */
 285                         struct ntfsmount *ntm = VFSTONTFS(mp);
 286                         error = vfs_export(mp, &ntm->ntm_export, &args.export);
 287                         goto success;
 288                 }
 289
 290                 kprintf("ntfs_mount(): MNT_UPDATE not supported\n");
 291                 error = EINVAL;
 292                 goto error_1;
 293         }
 294
 295         /*
 296          * Not an update, or updating the name: look up the name
 297          * and verify that it refers to a sensible block device.
 298          */
 299         devvp = NULL;
 300         error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW);
 301         if (error == 0)
 302                 error = nlookup(&nd);
 303         if (error == 0)
 304                 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp);
 305         nlookup_done(&nd);
 306         if (error)
 307                 goto error_1;
 308
 309 #if defined(__DragonFly__)
 310         if (!vn_isdisk(devvp, &error))
 311                 goto error_2;
 312 #else
 313         if (devvp->v_type != VBLK) {
 314                 error = ENOTBLK;
 315                 goto error_2;
 316         }
 317         if (devvp->v_umajor >= nblkdev) {
 318                 error = ENXIO;
 319                 goto error_2;
 320         }
 321 #endif
 322         if (mp->mnt_flag & MNT_UPDATE) {
 323 #if 0
 324                 /*
 325                  ********************
 326                  * UPDATE
 327                  ********************
 328                  */
 329
 330                 if (devvp != ntmp->um_devvp)
 331                         error = EINVAL; /* needs translation */
 332                 else
 333                         vrele(devvp);
 334                 /*
 335                  * Update device name only on success
 336                  */
 337                 if( !error) {
 338                         /* Save "mounted from" info for mount point (NULL pad)*/
 339                         copyinstr(      args.fspec,
 340                                         mp->mnt_stat.f_mntfromname,
 341                                         MNAMELEN - 1,
 342                                         &size);
 343                         bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
 344                 }
 345 #endif
 346         } else {
 347                 /*
 348                  ********************
 349                  * NEW MOUNT
 350                  ********************
 351                  */
 352
 353                 /* Save "mounted from" info for mount point (NULL pad)*/
 354                 copyinstr(      args.fspec,                     /* device name*/
 355                                 mp->mnt_stat.f_mntfromname,     /* save area*/
 356                                 MNAMELEN - 1,                   /* max size*/
 357                                 &size);                         /* real size*/
 358                 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
 359
 360                 error = ntfs_mountfs(devvp, mp, &args, cred);
 361         }
 362         if (error) {
 363                 goto error_2;
 364         }
 365
 366 #ifdef __DragonFly__
 367 dostatfs:
 368 #endif
 369         /*
 370          * Initialize FS stat information in mount struct; uses
 371          * mp->mnt_stat.f_mntfromname.
 372          *
 373          * This code is common to root and non-root mounts
 374          */
 375         (void)VFS_STATFS(mp, &mp->mnt_stat, cred);
 376
 377         goto success;
 378
 379
 380 error_2:        /* error with devvp held*/
 381
 382         /* release devvp before failing*/
 383         vrele(devvp);
 384
 385 error_1:        /* no state to back out*/
 386
 387 success:
 388         return(error);
 389 }
 390
 391 /*
 392  * Common code for mount and mountroot
 393  */
 394 int
 395 ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp,
 396              struct ucred *cred)
 397 {
 398         struct buf *bp;
 399         struct ntfsmount *ntmp;
 400         cdev_t dev;
 401         int error, ronly, ncount, i;
 402         struct vnode *vp;
 403         char cs_local[ICONV_CSNMAXLEN];
 404         char cs_ntfs[ICONV_CSNMAXLEN];
 405
 406         /*
 407          * Disallow multiple mounts of the same device.
 408          * Disallow mounting of a device that is currently in use
 409          * (except for root, which might share swap device for miniroot).
 410          * Flush out any old buffers remaining from a previous use.
 411          */
 412         error = vfs_mountedon(devvp);
 413         if (error)
 414                 return (error);
 415         ncount = vcount(devvp);
 416 #if defined(__DragonFly__)
 417         if (devvp->v_object)
 418                 ncount -= 1;
 419 #endif
 420         if (ncount > 1)
 421                 return (EBUSY);
 422 #if defined(__DragonFly__)
 423         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 424         error = vinvalbuf(devvp, V_SAVE, 0, 0);
 425         VOP__UNLOCK(devvp, 0);
 426 #else
 427         error = vinvalbuf(devvp, V_SAVE, 0, 0);
 428 #endif
 429         if (error)
 430                 return (error);
 431
 432         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
 433         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 434         error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL);
 435         VOP__UNLOCK(devvp, 0);
 436         if (error)
 437                 return (error);
 438         dev = devvp->v_rdev;
 439
 440         bp = NULL;
 441
 442         error = bread(devvp, BBLOCK, BBSIZE, &bp);
 443         if (error)
 444                 goto out;
 445         ntmp = kmalloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
 446         bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
 447         brelse( bp );
 448         bp = NULL;
 449
 450         if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
 451                 error = EINVAL;
 452                 dprintf(("ntfs_mountfs: invalid boot block\n"));
 453                 goto out;
 454         }
 455
 456         {
 457                 int8_t cpr = ntmp->ntm_mftrecsz;
 458                 if( cpr > 0 )
 459                         ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
 460                 else
 461                         ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
 462         }
 463         dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
 464                 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
 465                 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
 466         dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
 467                 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
 468
 469         ntmp->ntm_mountp = mp;
 470         ntmp->ntm_dev = dev;
 471         ntmp->ntm_devvp = devvp;
 472         ntmp->ntm_uid = argsp->uid;
 473         ntmp->ntm_gid = argsp->gid;
 474         ntmp->ntm_mode = argsp->mode;
 475         ntmp->ntm_flag = argsp->flag;
 476
 477         if (argsp->flag & NTFS_MFLAG_KICONV && ntfs_iconv) {
 478                 bcopy(argsp->cs_local, cs_local, sizeof(cs_local));
 479                 bcopy(argsp->cs_ntfs, cs_ntfs, sizeof(cs_ntfs));
 480                 ntfs_82u_init(ntmp, cs_local, cs_ntfs);
 481                 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
 482         } else {
 483                 ntfs_82u_init(ntmp, NULL, NULL);
 484                 ntfs_u28_init(ntmp, ntmp->ntm_82u, NULL, NULL);
 485         }
 486
 487         mp->mnt_data = (qaddr_t)ntmp;
 488
 489         dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
 490                 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
 491                 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
 492                 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
 493
 494         vfs_add_vnodeops(mp, &ntfs_vnode_vops, &mp->mnt_vn_norm_ops);
 495
 496         /*
 497          * We read in some system nodes to do not allow
 498          * reclaim them and to have everytime access to them.
 499          */
 500         {
 501                 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
 502                 for (i=0; i<3; i++) {
 503                         error = VFS_VGET(mp, NULL,
 504                                          pi[i], &(ntmp->ntm_sysvn[pi[i]]));
 505                         if(error)
 506                                 goto out1;
 507                         vsetflags(ntmp->ntm_sysvn[pi[i]], VSYSTEM);
 508                         vref(ntmp->ntm_sysvn[pi[i]]);
 509                         vput(ntmp->ntm_sysvn[pi[i]]);
 510                 }
 511         }
 512
 513         /* read the Unicode lowercase --> uppercase translation table,
 514          * if necessary */
 515         if ((error = ntfs_toupper_use(mp, ntmp)))
 516                 goto out1;
 517
 518         /*
 519          * Scan $BitMap and count free clusters
 520          */
 521         error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
 522         if(error)
 523                 goto out1;
 524
 525         /*
 526          * Read and translate to internal format attribute
 527          * definition file.
 528          */
 529         {
 530                 int num,j;
 531                 struct attrdef ad;
 532
 533                 /* Open $AttrDef */
 534                 error = VFS_VGET(mp, NULL, NTFS_ATTRDEFINO, &vp);
 535                 if(error)
 536                         goto out1;
 537
 538                 /* Count valid entries */
 539                 for(num=0;;num++) {
 540                         error = ntfs_readattr(ntmp, VTONT(vp),
 541                                         NTFS_A_DATA, NULL,
 542                                         num * sizeof(ad), sizeof(ad),
 543                                         &ad, NULL);
 544                         if (error)
 545                                 goto out1;
 546                         if (ad.ad_name[0] == 0)
 547                                 break;
 548                 }
 549
 550                 /* Alloc memory for attribute definitions */
 551                 ntmp->ntm_ad = kmalloc(num * sizeof(struct ntvattrdef),
 552                                        M_NTFSMNT, M_WAITOK);
 553
 554                 ntmp->ntm_adnum = num;
 555
 556                 /* Read them and translate */
 557                 for(i=0;i<num;i++){
 558                         error = ntfs_readattr(ntmp, VTONT(vp),
 559                                         NTFS_A_DATA, NULL,
 560                                         i * sizeof(ad), sizeof(ad),
 561                                         &ad, NULL);
 562                         if (error)
 563                                 goto out1;
 564                         j = 0;
 565                         do {
 566                                 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
 567                         } while(ad.ad_name[j++]);
 568                         ntmp->ntm_ad[i].ad_namelen = j - 1;
 569                         ntmp->ntm_ad[i].ad_type = ad.ad_type;
 570                 }
 571
 572                 vput(vp);
 573         }
 574
 575 #if defined(__DragonFly__)
 576         mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
 577         mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
 578 #else
 579         mp->mnt_stat.f_fsid.val[0] = dev;
 580         mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_NTFS);
 581 #endif
 582         mp->mnt_maxsymlinklen = 0;
 583         mp->mnt_flag |= MNT_LOCAL;
 584         dev->si_mountpoint = mp;
 585
 586         return (0);
 587
 588 out1:
 589         for(i=0;i<NTFS_SYSNODESNUM;i++)
 590                 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
 591
 592         if (vflush(mp, 0, 0))
 593                 dprintf(("ntfs_mountfs: vflush failed\n"));
 594
 595 out:
 596         dev->si_mountpoint = NULL;
 597         if (bp)
 598                 brelse(bp);
 599
 600 #if defined __NetBSD__
 601         /* lock the device vnode before calling VOP_CLOSE() */
 602         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 603         (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE);
 604         VOP__UNLOCK(devvp, 0);
 605 #else
 606         vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
 607         (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NULL);
 608         vn_unlock(devvp);
 609 #endif
 610
 611         return (error);
 612 }
 613
 614 #if !defined(__DragonFly__)
 615 static int
 616 ntfs_start(struct mount *mp, int flags, struct thread *td)
 617 {
 618         return (0);
 619 }
 620 #endif
 621
 622 static int
 623 ntfs_unmount(struct mount *mp, int mntflags)
 624 {
 625         struct ntfsmount *ntmp;
 626         int error, ronly, flags, i;
 627
 628         dprintf(("ntfs_unmount: unmounting...\n"));
 629         ntmp = VFSTONTFS(mp);
 630
 631         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
 632         flags = 0;
 633         if(mntflags & MNT_FORCE)
 634                 flags |= FORCECLOSE;
 635
 636         dprintf(("ntfs_unmount: vflushing...\n"));
 637         error = vflush(mp, 0, flags | SKIPSYSTEM);
 638         if (error) {
 639                 kprintf("ntfs_unmount: vflush failed: %d\n",error);
 640                 return (error);
 641         }
 642
 643         /* Check if only system vnodes are left */
 644         for(i=0;i<NTFS_SYSNODESNUM;i++)
 645                  if((ntmp->ntm_sysvn[i]) &&
 646                     (VREFCNT(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
 647
 648         /* Dereference all system vnodes */
 649         for(i=0;i<NTFS_SYSNODESNUM;i++)
 650                  if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
 651
 652         /* vflush system vnodes */
 653         error = vflush(mp, 0, flags);
 654         if (error)
 655                 kprintf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
 656
 657         /* Check if the type of device node isn't VBAD before
 658          * touching v_cdevinfo.  If the device vnode is revoked, the
 659          * field is NULL and touching it causes null pointer derefercence.
 660          */
 661         if (ntmp->ntm_devvp->v_type != VBAD)
 662                 ntmp->ntm_devvp->v_rdev->si_mountpoint = NULL;
 663
 664         vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
 665         vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0);
 666         error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, NULL);
 667         vn_unlock(ntmp->ntm_devvp);
 668
 669         vrele(ntmp->ntm_devvp);
 670
 671         /* free the toupper table, if this has been last mounted ntfs volume */
 672         ntfs_toupper_unuse();
 673
 674         dprintf(("ntfs_umount: freeing memory...\n"));
 675         ntfs_u28_uninit(ntmp);
 676         ntfs_82u_uninit(ntmp);
 677         mp->mnt_data = (qaddr_t)0;
 678         mp->mnt_flag &= ~MNT_LOCAL;
 679         kfree(ntmp->ntm_ad, M_NTFSMNT);
 680         kfree(ntmp, M_NTFSMNT);
 681         return (error);
 682 }
 683
 684 static int
 685 ntfs_root(struct mount *mp, struct vnode **vpp)
 686 {
 687         struct vnode *nvp;
 688         int error = 0;
 689
 690         dprintf(("ntfs_root(): sysvn: %p\n",
 691                 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
 692         error = VFS_VGET(mp, NULL, (ino_t)NTFS_ROOTINO, &nvp);
 693         if(error) {
 694                 kprintf("ntfs_root: VFS_VGET failed: %d\n",error);
 695                 return (error);
 696         }
 697
 698         *vpp = nvp;
 699         return (0);
 700 }
 701
 702 #if !defined(__DragonFly__)
 703 static int
 704 ntfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
 705               struct thread *td)
 706 {
 707         kprintf("\nntfs_quotactl():\n");
 708         return EOPNOTSUPP;
 709 }
 710 #endif
 711
 712 int
 713 ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep)
 714 {
 715         struct vnode *vp;
 716         u_int8_t *tmp;
 717         int j, error;
 718         long cfree = 0;
 719         size_t bmsize, i;
 720
 721         vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
 722
 723         bmsize = VTOF(vp)->f_size;
 724
 725         tmp = kmalloc(bmsize, M_TEMP, M_WAITOK);
 726
 727         error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
 728                                0, bmsize, tmp, NULL);
 729         if (error)
 730                 goto out;
 731
 732         for(i=0;i<bmsize;i++)
 733                 for(j=0;j<8;j++)
 734                         if(~tmp[i] & (1 << j)) cfree++;
 735         *cfreep = cfree;
 736
 737     out:
 738         kfree(tmp, M_TEMP);
 739         return(error);
 740 }
 741
 742 static int
 743 ntfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
 744 {
 745         struct ntfsmount *ntmp = VFSTONTFS(mp);
 746         u_int64_t mftallocated;
 747
 748         dprintf(("ntfs_statfs():\n"));
 749
 750         mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
 751
 752 #if defined(__DragonFly__)
 753         sbp->f_type = mp->mnt_vfc->vfc_typenum;
 754 #elif defined(__NetBSD__)
 755         sbp->f_type = 0;
 756 #else
 757         sbp->f_type = MOUNT_NTFS;
 758 #endif
 759         sbp->f_bsize = ntmp->ntm_bps;
 760         sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
 761         sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
 762         sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
 763         sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
 764         sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
 765                        sbp->f_ffree;
 766         if (sbp != &mp->mnt_stat) {
 767                 bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
 768                         (caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
 769         }
 770         sbp->f_flags = mp->mnt_flag;
 771 #ifdef __NetBSD__
 772         strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
 773 #endif
 774
 775         return (0);
 776 }
 777
 778 static int
 779 ntfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred)
 780 {
 781         struct ntfsmount *ntmp = VFSTONTFS(mp);
 782         u_int64_t mftallocated;
 783
 784         dprintf(("ntfs_statvfs():\n"));
 785
 786         mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
 787
 788         sbp->f_type = mp->mnt_vfc->vfc_typenum;
 789         sbp->f_bsize = ntmp->ntm_bps;
 790         sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
 791         sbp->f_bfree = sbp->f_bavail = ntmp->ntm_cfree * ntmp->ntm_spc;
 792         sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
 793         sbp->f_files = mftallocated / (ntmp->ntm_bpmftrec * ntmp->ntm_bps) +
 794                        sbp->f_ffree;
 795
 796         return (0);
 797 }
 798
 799 #if !defined(__DragonFly__)
 800 static int
 801 ntfs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct thread *td)
 802 {
 803         /*dprintf(("ntfs_sync():\n"));*/
 804         return (0);
 805 }
 806 #endif
 807
 808 /*ARGSUSED*/
 809 static int
 810 ntfs_fhtovp(struct mount *mp, struct vnode *rootvp,
 811             struct fid *fhp, struct vnode **vpp)
 812 {
 813         struct vnode *nvp;
 814         struct ntfid *ntfhp = (struct ntfid *)fhp;
 815         int error;
 816
 817         ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
 818
 819         if ((error = VFS_VGET(mp, NULL, ntfhp->ntfid_ino, &nvp)) != 0) {
 820                 *vpp = NULLVP;
 821                 return (error);
 822         }
 823         /* XXX as unlink/rmdir/mkdir/creat are not currently possible
 824          * with NTFS, we don't need to check anything else for now */
 825         *vpp = nvp;
 826
 827         return (0);
 828 }
 829
 830 static int
 831 ntfs_vptofh(struct vnode *vp, struct fid *fhp)
 832 {
 833         struct ntnode *ntp;
 834         struct ntfid *ntfhp;
 835
 836         ddprintf(("ntfs_fhtovp(): %p\n", vp));
 837
 838         ntp = VTONT(vp);
 839         ntfhp = (struct ntfid *)fhp;
 840         ntfhp->ntfid_len = sizeof(struct ntfid);
 841         ntfhp->ntfid_ino = ntp->i_number;
 842         /* ntfhp->ntfid_gen = ntp->i_gen; */
 843         return (0);
 844 }
 845
 846 int
 847 ntfs_vgetex(struct mount *mp, ino_t ino, u_int32_t attrtype, char *attrname,
 848             u_long lkflags, u_long flags, struct thread *td,
 849             struct vnode **vpp)
 850 {
 851         int error;
 852         struct ntfsmount *ntmp;
 853         struct ntnode *ip;
 854         struct fnode *fp;
 855         struct vnode *vp;
 856         enum vtype f_type;
 857
 858         dprintf(("ntfs_vgetex: ino: %ju, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
 859                 (uintmax_t) ino, attrtype, attrname?attrname:"", lkflags, flags));
 860
 861         ntmp = VFSTONTFS(mp);
 862         *vpp = NULL;
 863
 864         /* Get ntnode */
 865         error = ntfs_ntlookup(ntmp, ino, &ip);
 866         if (error) {
 867                 kprintf("ntfs_vget: ntfs_ntget failed\n");
 868                 return (error);
 869         }
 870
 871         /* It may be not initialized fully, so force load it */
 872         if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
 873                 error = ntfs_loadntnode(ntmp, ip);
 874                 if(error) {
 875                         kprintf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %"PRId64"\n",
 876                                ip->i_number);
 877                         ntfs_ntput(ip);
 878                         return (error);
 879                 }
 880         }
 881
 882         error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
 883         if (error) {
 884                 kprintf("ntfs_vget: ntfs_fget failed\n");
 885                 ntfs_ntput(ip);
 886                 return (error);
 887         }
 888
 889         f_type = VINT;
 890         if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
 891                 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
 892                     (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
 893                         f_type = VDIR;
 894                 } else if (flags & VG_EXT) {
 895                         f_type = VINT;
 896                         fp->f_size = fp->f_allocated = 0;
 897                 } else {
 898                         f_type = VREG;
 899
 900                         error = ntfs_filesize(ntmp, fp,
 901                                               &fp->f_size, &fp->f_allocated);
 902                         if (error) {
 903                                 ntfs_ntput(ip);
 904                                 return (error);
 905                         }
 906                 }
 907
 908                 fp->f_flag |= FN_VALID;
 909         }
 910
 911         if (FTOV(fp)) {
 912                 VGET(FTOV(fp), lkflags);
 913                 *vpp = FTOV(fp);
 914                 ntfs_ntput(ip);
 915                 return (0);
 916         }
 917
 918         error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &vp, VLKTIMEOUT, 0);
 919         if(error) {
 920                 ntfs_frele(fp);
 921                 ntfs_ntput(ip);
 922                 return (error);
 923         }
 924         dprintf(("ntfs_vget: vnode: %p for ntnode: %ju\n", vp, (uintmax_t)ino));
 925
 926         fp->f_vp = vp;
 927         vp->v_data = fp;
 928         vp->v_type = f_type;
 929
 930         if (ino == NTFS_ROOTINO)
 931                 vsetflags(vp, VROOT);
 932
 933         /*
 934          * Normal files use the buffer cache
 935          */
 936         if (f_type == VREG)
 937                 vinitvmio(vp, fp->f_size, PAGE_SIZE, -1);
 938
 939         ntfs_ntput(ip);
 940
 941         KKASSERT(lkflags & LK_TYPE_MASK);
 942         /* XXX leave vnode locked exclusively from getnewvnode */
 943         *vpp = vp;
 944         return (0);
 945
 946 }
 947
 948 static int
 949 ntfs_vget(struct mount *mp, struct vnode *dvp, ino_t ino, struct vnode **vpp)
 950 {
 951         return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
 952                         LK_EXCLUSIVE | LK_RETRY, 0, curthread, vpp);
 953 }
 954
 955 #if defined(__DragonFly__)
 956 static struct vfsops ntfs_vfsops = {
 957         .vfs_mount =            ntfs_mount,
 958         .vfs_unmount =          ntfs_unmount,
 959         .vfs_root =             ntfs_root,
 960         .vfs_statfs =           ntfs_statfs,
 961         .vfs_statvfs =          ntfs_statvfs,
 962         .vfs_sync =             vfs_stdsync,
 963         .vfs_vget =             ntfs_vget,
 964         .vfs_fhtovp =           ntfs_fhtovp,
 965         .vfs_checkexp =         ntfs_checkexp,
 966         .vfs_vptofh =           ntfs_vptofh,
 967         .vfs_init =             ntfs_init,
 968         .vfs_uninit =           ntfs_nthash_uninit /* see ntfs_ihash.c */
 969 };
 970 VFS_SET(ntfs_vfsops, ntfs, 0);
 971 MODULE_VERSION(ntfs, 1);
 972 #elif defined(__NetBSD__)
 973 extern struct vnodeopv_desc ntfs_vnodeop_opv_desc;
 974
 975 struct vnodeopv_desc *ntfs_vnodeopv_descs[] = {
 976         &ntfs_vnodeop_opv_desc,
 977         NULL,
 978 };
 979
 980 struct vfsops ntfs_vfsops = {
 981         MOUNT_NTFS,
 982         ntfs_mount,
 983         ntfs_start,
 984         ntfs_unmount,
 985         ntfs_root,
 986         ntfs_quotactl,
 987         ntfs_statfs,
 988         ntfs_sync,
 989         ntfs_vget,
 990         ntfs_fhtovp,
 991         ntfs_vptofh,
 992         ntfs_init,
 993         ntfs_sysctl,
 994         ntfs_mountroot,
 995         ntfs_checkexp,
 996         ntfs_vnodeopv_descs,
 997 };
 998 #else /* !NetBSD && !FreeBSD */
 999 static struct vfsops ntfs_vfsops = {
1000         ntfs_mount,
1001         ntfs_start,
1002         ntfs_unmount,
1003         ntfs_root,
1004         ntfs_quotactl,
1005         ntfs_statfs,
1006         ntfs_sync,
1007         ntfs_vget,
1008         ntfs_fhtovp,
1009         ntfs_vptofh,
1010         ntfs_init,
1011 };
1012 VFS_SET(ntfs_vfsops, ntfs, MOUNT_NTFS, 0);
1013 #endif
1014
1015