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  * $DragonFly: src/sys/vfs/ntfs/ntfs_vfsops.c,v 1.47.4.1 2008/09/25 02:20:54 dillon Exp $
  30  */
  31
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/conf.h>
  36 #include <sys/proc.h>
  37 #include <sys/nlookup.h>
  38 #include <sys/kernel.h>
  39 #include <sys/vnode.h>
  40 #include <sys/mount.h>
  41 #include <sys/buf.h>
  42 #include <sys/fcntl.h>
  43 #include <sys/malloc.h>
  44 #include <sys/systm.h>
  45 #if defined(__NetBSD__)
  46 #include <sys/device.h>
  47 #endif
  48
  49 #include <machine/inttypes.h>
  50
  51 #include <vm/vm.h>
  52 #include <vm/vm_param.h>
  53 #if defined(__NetBSD__)
  54 #include <vm/vm_prot.h>
  55 #endif
  56 #include <vm/vm_page.h>
  57 #include <vm/vm_object.h>
  58 #include <vm/vm_extern.h>
  59 #include <vm/vm_zone.h>
  60
  61 #if defined(__NetBSD__)
  62 #include <miscfs/specfs/specdev.h>
  63 #endif
  64
  65 /*#define NTFS_DEBUG 1*/
  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 static int      ntfs_root (struct mount *, struct vnode **);
  83 static int      ntfs_statfs (struct mount *, struct statfs *, struct ucred *cred);
  84 static int      ntfs_unmount (struct mount *, int);
  85 static int      ntfs_vget (struct mount *mp, ino_t ino, struct vnode **vpp);
  86 static int      ntfs_mountfs (struct vnode *, struct mount *,
  87                                   struct ntfs_args *, struct ucred *);
  88 static int      ntfs_vptofh (struct vnode *, struct fid *);
  89 static int      ntfs_fhtovp (struct mount *, struct vnode *rootvp,
  90                                 struct fid *, struct vnode **);
  91
  92 #if !defined (__DragonFly__)
  93 static int      ntfs_quotactl (struct mount *, int, uid_t, caddr_t,
  94                                    struct thread *);
  95 static int      ntfs_start (struct mount *, int, struct thread *);
  96 static int      ntfs_sync (struct mount *, int, struct ucred *,
  97                                struct thread *);
  98 #endif
  99
 100 #if defined(__DragonFly__)
 101 struct sockaddr;
 102 static int      ntfs_mount (struct mount *, char *, caddr_t, struct ucred *);
 103 static int      ntfs_init (struct vfsconf *);
 104 static int      ntfs_checkexp (struct mount *, struct sockaddr *,
 105                                    int *, struct ucred **);
 106 #elif defined(__NetBSD__)
 107 static int      ntfs_mount (struct mount *, const char *, void *,
 108                                 struct nameidata *, struct thread *);
 109 static void     ntfs_init (void);
 110 static int      ntfs_mountroot (void);
 111 static int      ntfs_sysctl (int *, u_int, void *, size_t *, void *,
 112                                  size_t, struct thread *);
 113 static int      ntfs_checkexp (struct mount *, struct mbuf *,
 114                                    int *, struct ucred **);
 115 #endif
 116
 117 /*
 118  * Verify a remote client has export rights and return these rights via.
 119  * exflagsp and credanonp.
 120  */
 121 static int
 122 ntfs_checkexp(struct mount *mp,
 123 #if defined(__DragonFly__)
 124               struct sockaddr *nam,
 125 #else /* defined(__NetBSD__) */
 126               struct mbuf *nam,
 127 #endif
 128               int *exflagsp, struct ucred **credanonp)
 129 {
 130         struct netcred *np;
 131         struct ntfsmount *ntm = VFSTONTFS(mp);
 132
 133         /*
 134          * Get the export permission structure for this <mp, client> tuple.
 135          */
 136         np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
 137         if (np == NULL)
 138                 return (EACCES);
 139
 140         *exflagsp = np->netc_exflags;
 141         *credanonp = &np->netc_anon;
 142         return (0);
 143 }
 144
 145 #if defined(__NetBSD__)
 146 /*ARGSUSED*/
 147 static int
 148 ntfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
 149             size_t newlen, struct thread *td)
 150 {
 151         return (EINVAL);
 152 }
 153
 154 static int
 155 ntfs_mountroot(void)
 156 {
 157         struct mount *mp;
 158         struct vnode *rootvp;
 159         struct thread *td = curthread;  /* XXX */
 160         struct ntfs_args args;
 161         lwkt_tokref ilock;
 162         int error;
 163
 164         if (root_device->dv_class != DV_DISK)
 165                 return (ENODEV);
 166
 167         /*
 168          * Get vnodes for rootdev.
 169          */
 170         if (bdevvp(rootdev, &rootvp))
 171                 panic("ntfs_mountroot: can't setup rootvp");
 172
 173         if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) {
 174                 vrele(rootvp);
 175                 return (error);
 176         }
 177
 178         args.flag = 0;
 179         args.uid = 0;
 180         args.gid = 0;
 181         args.mode = 0777;
 182
 183         if ((error = ntfs_mountfs(rootvp, mp, &args, proc0.p_ucred)) != 0) {
 184                 mp->mnt_op->vfs_refcount--;
 185                 vfs_unbusy(mp);
 186                 kfree(mp, M_MOUNT);
 187                 vrele(rootvp);
 188                 return (error);
 189         }
 190         mountlist_insert(mp, MNTINS_LAST);
 191         (void)ntfs_statfs(mp, &mp->mnt_stat, proc0.p_ucred);
 192         vfs_unbusy(mp);
 193         return (0);
 194 }
 195
 196 static void
 197 ntfs_init(void)
 198 {
 199         ntfs_nthashinit();
 200         ntfs_toupper_init();
 201 }
 202
 203 #elif defined(__DragonFly__)
 204
 205 static int
 206 ntfs_init(struct vfsconf *vcp)
 207 {
 208         ntfs_nthashinit();
 209         ntfs_toupper_init();
 210         return 0;
 211 }
 212
 213 #endif /* NetBSD */
 214
 215 static int
 216 ntfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
 217 {
 218         size_t          size;
 219         int             error;
 220         struct vnode    *devvp;
 221         struct ntfs_args args;
 222         struct nlookupdata nd;
 223         struct vnode *rootvp;
 224
 225         error = 0;
 226 #ifdef __DragonFly__
 227         /*
 228          * Use NULL path to flag a root mount
 229          */
 230         if( path == NULL) {
 231                 /*
 232                  ***
 233                  * Mounting root file system
 234                  ***
 235                  */
 236
 237                 /* Get vnode for root device*/
 238                 if( bdevvp( rootdev, &rootvp))
 239                         panic("ffs_mountroot: can't setup bdevvp for root");
 240
 241                 /*
 242                  * FS specific handling
 243                  */
 244                 mp->mnt_flag |= MNT_RDONLY;     /* XXX globally applicable?*/
 245
 246                 /*
 247                  * Attempt mount
 248                  */
 249                 if( ( error = ntfs_mountfs(rootvp, mp, &args, cred)) != 0) {
 250                         /* fs specific cleanup (if any)*/
 251                         goto error_1;
 252                 }
 253
 254                 goto dostatfs;          /* success*/
 255
 256         }
 257 #endif /* FreeBSD */
 258
 259         /*
 260          ***
 261          * Mounting non-root file system or updating a file system
 262          ***
 263          */
 264
 265         /* copy in user arguments*/
 266         error = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
 267         if (error)
 268                 goto error_1;           /* can't get arguments*/
 269
 270         /*
 271          * If updating, check whether changing from read-only to
 272          * read/write; if there is no device name, that's all we do.
 273          */
 274         if (mp->mnt_flag & MNT_UPDATE) {
 275                 /* if not updating name...*/
 276                 if (args.fspec == 0) {
 277                         /*
 278                          * Process export requests.  Jumping to "success"
 279                          * will return the vfs_export() error code.
 280                          */
 281                         struct ntfsmount *ntm = VFSTONTFS(mp);
 282                         error = vfs_export(mp, &ntm->ntm_export, &args.export);
 283                         goto success;
 284                 }
 285
 286                 kprintf("ntfs_mount(): MNT_UPDATE not supported\n");
 287                 error = EINVAL;
 288                 goto error_1;
 289         }
 290
 291         /*
 292          * Not an update, or updating the name: look up the name
 293          * and verify that it refers to a sensible block device.
 294          */
 295         devvp = NULL;
 296         error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW);
 297         if (error == 0)
 298                 error = nlookup(&nd);
 299         if (error == 0)
 300                 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp);
 301         nlookup_done(&nd);
 302         if (error)
 303                 goto error_1;
 304
 305 #if defined(__DragonFly__)
 306         if (!vn_isdisk(devvp, &error))
 307                 goto error_2;
 308 #else
 309         if (devvp->v_type != VBLK) {
 310                 error = ENOTBLK;
 311                 goto error_2;
 312         }
 313         if (devvp->v_umajor >= nblkdev) {
 314                 error = ENXIO;
 315                 goto error_2;
 316         }
 317 #endif
 318         if (mp->mnt_flag & MNT_UPDATE) {
 319 #if 0
 320                 /*
 321                  ********************
 322                  * UPDATE
 323                  ********************
 324                  */
 325
 326                 if (devvp != ntmp->um_devvp)
 327                         error = EINVAL; /* needs translation */
 328                 else
 329                         vrele(devvp);
 330                 /*
 331                  * Update device name only on success
 332                  */
 333                 if( !error) {
 334                         /* Save "mounted from" info for mount point (NULL pad)*/
 335                         copyinstr(      args.fspec,
 336                                         mp->mnt_stat.f_mntfromname,
 337                                         MNAMELEN - 1,
 338                                         &size);
 339                         bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
 340                 }
 341 #endif
 342         } else {
 343                 /*
 344                  ********************
 345                  * NEW MOUNT
 346                  ********************
 347                  */
 348
 349                 /* Save "mounted from" info for mount point (NULL pad)*/
 350                 copyinstr(      args.fspec,                     /* device name*/
 351                                 mp->mnt_stat.f_mntfromname,     /* save area*/
 352                                 MNAMELEN - 1,                   /* max size*/
 353                                 &size);                         /* real size*/
 354                 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
 355
 356                 error = ntfs_mountfs(devvp, mp, &args, cred);
 357         }
 358         if (error) {
 359                 goto error_2;
 360         }
 361
 362 #ifdef __DragonFly__
 363 dostatfs:
 364 #endif
 365         /*
 366          * Initialize FS stat information in mount struct; uses
 367          * mp->mnt_stat.f_mntfromname.
 368          *
 369          * This code is common to root and non-root mounts
 370          */
 371         (void)VFS_STATFS(mp, &mp->mnt_stat, cred);
 372
 373         goto success;
 374
 375
 376 error_2:        /* error with devvp held*/
 377
 378         /* release devvp before failing*/
 379         vrele(devvp);
 380
 381 error_1:        /* no state to back out*/
 382
 383 success:
 384         return(error);
 385 }
 386
 387 /*
 388  * Common code for mount and mountroot
 389  */
 390 int
 391 ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp,
 392              struct ucred *cred)
 393 {
 394         struct buf *bp;
 395         struct ntfsmount *ntmp;
 396         cdev_t dev;
 397         int error, ronly, ncount, i;
 398         struct vnode *vp;
 399
 400         /*
 401          * Disallow multiple mounts of the same device.
 402          * Disallow mounting of a device that is currently in use
 403          * (except for root, which might share swap device for miniroot).
 404          * Flush out any old buffers remaining from a previous use.
 405          */
 406         error = vfs_mountedon(devvp);
 407         if (error)
 408                 return (error);
 409         ncount = count_udev(devvp->v_umajor, devvp->v_uminor);
 410 #if defined(__DragonFly__)
 411         if (devvp->v_object)
 412                 ncount -= 1;
 413 #endif
 414         if (ncount > 1)
 415                 return (EBUSY);
 416 #if defined(__DragonFly__)
 417         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 418         error = vinvalbuf(devvp, V_SAVE, 0, 0);
 419         VOP__UNLOCK(devvp, 0);
 420 #else
 421         error = vinvalbuf(devvp, V_SAVE, 0, 0);
 422 #endif
 423         if (error)
 424                 return (error);
 425
 426         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
 427         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 428         error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL);
 429         VOP__UNLOCK(devvp, 0);
 430         if (error)
 431                 return (error);
 432         dev = devvp->v_rdev;
 433
 434         bp = NULL;
 435
 436         error = bread(devvp, ntfs_bntodoff(BBLOCK), BBSIZE, &bp);
 437         if (error)
 438                 goto out;
 439         ntmp = kmalloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
 440         bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
 441         brelse( bp );
 442         bp = NULL;
 443
 444         if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
 445                 error = EINVAL;
 446                 dprintf(("ntfs_mountfs: invalid boot block\n"));
 447                 goto out;
 448         }
 449
 450         {
 451                 int8_t cpr = ntmp->ntm_mftrecsz;
 452                 if( cpr > 0 )
 453                         ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
 454                 else
 455                         ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
 456         }
 457         dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
 458                 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
 459                 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
 460         dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
 461                 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
 462
 463         ntmp->ntm_mountp = mp;
 464         ntmp->ntm_dev = dev;
 465         ntmp->ntm_devvp = devvp;
 466         ntmp->ntm_uid = argsp->uid;
 467         ntmp->ntm_gid = argsp->gid;
 468         ntmp->ntm_mode = argsp->mode;
 469         ntmp->ntm_flag = argsp->flag;
 470
 471         /* Copy in the 8-bit to Unicode conversion table */
 472         if (argsp->flag & NTFSMNT_U2WTABLE) {
 473                 ntfs_82u_init(ntmp, argsp->u2w);
 474         } else {
 475                 ntfs_82u_init(ntmp, NULL);
 476         }
 477
 478         /* Initialize Unicode to 8-bit table from 8toU table */
 479         ntfs_u28_init(ntmp, ntmp->ntm_82u);
 480
 481         mp->mnt_data = (qaddr_t)ntmp;
 482
 483         dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
 484                 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
 485                 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
 486                 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
 487
 488         vfs_add_vnodeops(mp, &ntfs_vnode_vops, &mp->mnt_vn_norm_ops);
 489
 490         /*
 491          * We read in some system nodes to do not allow
 492          * reclaim them and to have everytime access to them.
 493          */
 494         {
 495                 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
 496                 for (i=0; i<3; i++) {
 497                         error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]));
 498                         if(error)
 499                                 goto out1;
 500                         ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM;
 501                         vref(ntmp->ntm_sysvn[pi[i]]);
 502                         vput(ntmp->ntm_sysvn[pi[i]]);
 503                 }
 504         }
 505
 506         /* read the Unicode lowercase --> uppercase translation table,
 507          * if necessary */
 508         if ((error = ntfs_toupper_use(mp, ntmp)))
 509                 goto out1;
 510
 511         /*
 512          * Scan $BitMap and count free clusters
 513          */
 514         error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
 515         if(error)
 516                 goto out1;
 517
 518         /*
 519          * Read and translate to internal format attribute
 520          * definition file.
 521          */
 522         {
 523                 int num,j;
 524                 struct attrdef ad;
 525
 526                 /* Open $AttrDef */
 527                 error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp);
 528                 if(error)
 529                         goto out1;
 530
 531                 /* Count valid entries */
 532                 for(num=0;;num++) {
 533                         error = ntfs_readattr(ntmp, VTONT(vp),
 534                                         NTFS_A_DATA, NULL,
 535                                         num * sizeof(ad), sizeof(ad),
 536                                         &ad, NULL);
 537                         if (error)
 538                                 goto out1;
 539                         if (ad.ad_name[0] == 0)
 540                                 break;
 541                 }
 542
 543                 /* Alloc memory for attribute definitions */
 544                 MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
 545                         num * sizeof(struct ntvattrdef),
 546                         M_NTFSMNT, M_WAITOK);
 547
 548                 ntmp->ntm_adnum = num;
 549
 550                 /* Read them and translate */
 551                 for(i=0;i<num;i++){
 552                         error = ntfs_readattr(ntmp, VTONT(vp),
 553                                         NTFS_A_DATA, NULL,
 554                                         i * sizeof(ad), sizeof(ad),
 555                                         &ad, NULL);
 556                         if (error)
 557                                 goto out1;
 558                         j = 0;
 559                         do {
 560                                 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
 561                         } while(ad.ad_name[j++]);
 562                         ntmp->ntm_ad[i].ad_namelen = j - 1;
 563                         ntmp->ntm_ad[i].ad_type = ad.ad_type;
 564                 }
 565
 566                 vput(vp);
 567         }
 568
 569 #if defined(__DragonFly__)
 570         mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
 571         mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
 572 #else
 573         mp->mnt_stat.f_fsid.val[0] = dev;
 574         mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_NTFS);
 575 #endif
 576         mp->mnt_maxsymlinklen = 0;
 577         mp->mnt_flag |= MNT_LOCAL;
 578         dev->si_mountpoint = mp;
 579
 580         return (0);
 581
 582 out1:
 583         for(i=0;i<NTFS_SYSNODESNUM;i++)
 584                 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
 585
 586         if (vflush(mp, 0, 0))
 587                 dprintf(("ntfs_mountfs: vflush failed\n"));
 588
 589 out:
 590         dev->si_mountpoint = NULL;
 591         if (bp)
 592                 brelse(bp);
 593
 594 #if defined __NetBSD__
 595         /* lock the device vnode before calling VOP_CLOSE() */
 596         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 597         (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE);
 598         VOP__UNLOCK(devvp, 0);
 599 #else
 600         (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE);
 601 #endif
 602
 603         return (error);
 604 }
 605
 606 #if !defined(__DragonFly__)
 607 static int
 608 ntfs_start(struct mount *mp, int flags, struct thread *td)
 609 {
 610         return (0);
 611 }
 612 #endif
 613
 614 static int
 615 ntfs_unmount(struct mount *mp, int mntflags)
 616 {
 617         struct ntfsmount *ntmp;
 618         int error, ronly, flags, i;
 619
 620         dprintf(("ntfs_unmount: unmounting...\n"));
 621         ntmp = VFSTONTFS(mp);
 622
 623         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
 624         flags = 0;
 625         if(mntflags & MNT_FORCE)
 626                 flags |= FORCECLOSE;
 627
 628         dprintf(("ntfs_unmount: vflushing...\n"));
 629         error = vflush(mp, 0, flags | SKIPSYSTEM);
 630         if (error) {
 631                 kprintf("ntfs_unmount: vflush failed: %d\n",error);
 632                 return (error);
 633         }
 634
 635         /* Check if only system vnodes are rest */
 636         for(i=0;i<NTFS_SYSNODESNUM;i++)
 637                  if((ntmp->ntm_sysvn[i]) &&
 638                     (ntmp->ntm_sysvn[i]->v_sysref.refcnt > 1)) return (EBUSY);
 639
 640         /* Dereference all system vnodes */
 641         for(i=0;i<NTFS_SYSNODESNUM;i++)
 642                  if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
 643
 644         /* vflush system vnodes */
 645         error = vflush(mp, 0, flags);
 646         if (error)
 647                 kprintf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
 648
 649         /* Check if the type of device node isn't VBAD before
 650          * touching v_cdevinfo.  If the device vnode is revoked, the
 651          * field is NULL and touching it causes null pointer derefercence.
 652          */
 653         if (ntmp->ntm_devvp->v_type != VBAD)
 654                 ntmp->ntm_devvp->v_rdev->si_mountpoint = NULL;
 655
 656         vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0);
 657
 658         error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE);
 659
 660         vrele(ntmp->ntm_devvp);
 661
 662         /* free the toupper table, if this has been last mounted ntfs volume */
 663         ntfs_toupper_unuse();
 664
 665         dprintf(("ntfs_umount: freeing memory...\n"));
 666         ntfs_u28_uninit(ntmp);
 667         ntfs_82u_uninit(ntmp);
 668         mp->mnt_data = (qaddr_t)0;
 669         mp->mnt_flag &= ~MNT_LOCAL;
 670         FREE(ntmp->ntm_ad, M_NTFSMNT);
 671         FREE(ntmp, M_NTFSMNT);
 672         return (error);
 673 }
 674
 675 static int
 676 ntfs_root(struct mount *mp, struct vnode **vpp)
 677 {
 678         struct vnode *nvp;
 679         int error = 0;
 680
 681         dprintf(("ntfs_root(): sysvn: %p\n",
 682                 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
 683         error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp);
 684         if(error) {
 685                 kprintf("ntfs_root: VFS_VGET failed: %d\n",error);
 686                 return (error);
 687         }
 688
 689         *vpp = nvp;
 690         return (0);
 691 }
 692
 693 #if !defined(__DragonFly__)
 694 static int
 695 ntfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
 696               struct thread *td)
 697 {
 698         kprintf("\nntfs_quotactl():\n");
 699         return EOPNOTSUPP;
 700 }
 701 #endif
 702
 703 int
 704 ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep)
 705 {
 706         struct vnode *vp;
 707         u_int8_t *tmp;
 708         int j, error;
 709         long cfree = 0;
 710         size_t bmsize, i;
 711
 712         vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
 713
 714         bmsize = VTOF(vp)->f_size;
 715
 716         MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
 717
 718         error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
 719                                0, bmsize, tmp, NULL);
 720         if (error)
 721                 goto out;
 722
 723         for(i=0;i<bmsize;i++)
 724                 for(j=0;j<8;j++)
 725                         if(~tmp[i] & (1 << j)) cfree++;
 726         *cfreep = cfree;
 727
 728     out:
 729         FREE(tmp, M_TEMP);
 730         return(error);
 731 }
 732
 733 static int
 734 ntfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
 735 {
 736         struct ntfsmount *ntmp = VFSTONTFS(mp);
 737         u_int64_t mftsize,mftallocated;
 738
 739         dprintf(("ntfs_statfs():\n"));
 740
 741         mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
 742         mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
 743
 744 #if defined(__DragonFly__)
 745         sbp->f_type = mp->mnt_vfc->vfc_typenum;
 746 #elif defined(__NetBSD__)
 747         sbp->f_type = 0;
 748 #else
 749         sbp->f_type = MOUNT_NTFS;
 750 #endif
 751         sbp->f_bsize = ntmp->ntm_bps;
 752         sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
 753         sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
 754         sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
 755         sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
 756         sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
 757                        sbp->f_ffree;
 758         if (sbp != &mp->mnt_stat) {
 759                 bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
 760                         (caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
 761         }
 762         sbp->f_flags = mp->mnt_flag;
 763 #ifdef __NetBSD__
 764         strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
 765 #endif
 766
 767         return (0);
 768 }
 769
 770 #if !defined(__DragonFly__)
 771 static int
 772 ntfs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct thread *td)
 773 {
 774         /*dprintf(("ntfs_sync():\n"));*/
 775         return (0);
 776 }
 777 #endif
 778
 779 /*ARGSUSED*/
 780 static int
 781 ntfs_fhtovp(struct mount *mp, struct vnode *rootvp,
 782             struct fid *fhp, struct vnode **vpp)
 783 {
 784         struct vnode *nvp;
 785         struct ntfid *ntfhp = (struct ntfid *)fhp;
 786         int error;
 787
 788         ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
 789
 790         if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, &nvp)) != 0) {
 791                 *vpp = NULLVP;
 792                 return (error);
 793         }
 794         /* XXX as unlink/rmdir/mkdir/creat are not currently possible
 795          * with NTFS, we don't need to check anything else for now */
 796         *vpp = nvp;
 797
 798         return (0);
 799 }
 800
 801 static int
 802 ntfs_vptofh(struct vnode *vp, struct fid *fhp)
 803 {
 804         struct ntnode *ntp;
 805         struct ntfid *ntfhp;
 806
 807         ddprintf(("ntfs_fhtovp(): %p\n", vp));
 808
 809         ntp = VTONT(vp);
 810         ntfhp = (struct ntfid *)fhp;
 811         ntfhp->ntfid_len = sizeof(struct ntfid);
 812         ntfhp->ntfid_ino = ntp->i_number;
 813         /* ntfhp->ntfid_gen = ntp->i_gen; */
 814         return (0);
 815 }
 816
 817 int
 818 ntfs_vgetex(struct mount *mp, ino_t ino, u_int32_t attrtype, char *attrname,
 819             u_long lkflags, u_long flags, struct thread *td,
 820             struct vnode **vpp)
 821 {
 822         int error;
 823         struct ntfsmount *ntmp;
 824         struct ntnode *ip;
 825         struct fnode *fp;
 826         struct vnode *vp;
 827         enum vtype f_type;
 828
 829         dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
 830                 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
 831                 (u_long)flags ));
 832
 833         ntmp = VFSTONTFS(mp);
 834         *vpp = NULL;
 835
 836         /* Get ntnode */
 837         error = ntfs_ntlookup(ntmp, ino, &ip);
 838         if (error) {
 839                 kprintf("ntfs_vget: ntfs_ntget failed\n");
 840                 return (error);
 841         }
 842
 843         /* It may be not initialized fully, so force load it */
 844         if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
 845                 error = ntfs_loadntnode(ntmp, ip);
 846                 if(error) {
 847                         kprintf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %"PRId64"\n",
 848                                ip->i_number);
 849                         ntfs_ntput(ip);
 850                         return (error);
 851                 }
 852         }
 853
 854         error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
 855         if (error) {
 856                 kprintf("ntfs_vget: ntfs_fget failed\n");
 857                 ntfs_ntput(ip);
 858                 return (error);
 859         }
 860
 861         f_type = VNON;
 862         if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
 863                 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
 864                     (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
 865                         f_type = VDIR;
 866                 } else if (flags & VG_EXT) {
 867                         f_type = VNON;
 868                         fp->f_size = fp->f_allocated = 0;
 869                 } else {
 870                         f_type = VREG;
 871
 872                         error = ntfs_filesize(ntmp, fp,
 873                                               &fp->f_size, &fp->f_allocated);
 874                         if (error) {
 875                                 ntfs_ntput(ip);
 876                                 return (error);
 877                         }
 878                 }
 879
 880                 fp->f_flag |= FN_VALID;
 881         }
 882
 883         if (FTOV(fp)) {
 884                 VGET(FTOV(fp), lkflags);
 885                 *vpp = FTOV(fp);
 886                 ntfs_ntput(ip);
 887                 return (0);
 888         }
 889
 890         error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &vp, VLKTIMEOUT, 0);
 891         if(error) {
 892                 ntfs_frele(fp);
 893                 ntfs_ntput(ip);
 894                 return (error);
 895         }
 896         dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
 897
 898         fp->f_vp = vp;
 899         vp->v_data = fp;
 900         vp->v_type = f_type;
 901
 902         if (ino == NTFS_ROOTINO)
 903                 vp->v_flag |= VROOT;
 904
 905         /*
 906          * Normal files use the buffer cache
 907          */
 908         if (f_type == VREG)
 909                 vinitvmio(vp, fp->f_size);
 910
 911         ntfs_ntput(ip);
 912
 913         KKASSERT(lkflags & LK_TYPE_MASK);
 914         /* XXX leave vnode locked exclusively from getnewvnode */
 915         *vpp = vp;
 916         return (0);
 917
 918 }
 919
 920 static int
 921 ntfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
 922 {
 923         return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
 924                         LK_EXCLUSIVE | LK_RETRY, 0, curthread, vpp);
 925 }
 926
 927 #if defined(__DragonFly__)
 928 static struct vfsops ntfs_vfsops = {
 929         .vfs_mount =            ntfs_mount,
 930         .vfs_unmount =          ntfs_unmount,
 931         .vfs_root =             ntfs_root,
 932         .vfs_statfs =           ntfs_statfs,
 933         .vfs_sync =             vfs_stdsync,
 934         .vfs_vget =             ntfs_vget,
 935         .vfs_fhtovp =           ntfs_fhtovp,
 936         .vfs_checkexp =         ntfs_checkexp,
 937         .vfs_vptofh =           ntfs_vptofh,
 938         .vfs_init =             ntfs_init,
 939         .vfs_uninit =           ntfs_nthash_uninit /* see ntfs_ihash.c */
 940 };
 941 VFS_SET(ntfs_vfsops, ntfs, 0);
 942 #elif defined(__NetBSD__)
 943 extern struct vnodeopv_desc ntfs_vnodeop_opv_desc;
 944
 945 struct vnodeopv_desc *ntfs_vnodeopv_descs[] = {
 946         &ntfs_vnodeop_opv_desc,
 947         NULL,
 948 };
 949
 950 struct vfsops ntfs_vfsops = {
 951         MOUNT_NTFS,
 952         ntfs_mount,
 953         ntfs_start,
 954         ntfs_unmount,
 955         ntfs_root,
 956         ntfs_quotactl,
 957         ntfs_statfs,
 958         ntfs_sync,
 959         ntfs_vget,
 960         ntfs_fhtovp,
 961         ntfs_vptofh,
 962         ntfs_init,
 963         ntfs_sysctl,
 964         ntfs_mountroot,
 965         ntfs_checkexp,
 966         ntfs_vnodeopv_descs,
 967 };
 968 #else /* !NetBSD && !FreeBSD */
 969 static struct vfsops ntfs_vfsops = {
 970         ntfs_mount,
 971         ntfs_start,
 972         ntfs_unmount,
 973         ntfs_root,
 974         ntfs_quotactl,
 975         ntfs_statfs,
 976         ntfs_sync,
 977         ntfs_vget,
 978         ntfs_fhtovp,
 979         ntfs_vptofh,
 980         ntfs_init,
 981 };
 982 VFS_SET(ntfs_vfsops, ntfs, MOUNT_NTFS, 0);
 983 #endif
 984
 985