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