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 1.48 2008/09/17 21:44:25 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 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         lwkt_tokref ilock;
 165         int error;
 166
 167         if (root_device->dv_class != DV_DISK)
 168                 return (ENODEV);
 169
 170         /*
 171          * Get vnodes for rootdev.
 172          */
 173         if (bdevvp(rootdev, &rootvp))
 174                 panic("ntfs_mountroot: can't setup rootvp");
 175
 176         if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) {
 177                 vrele(rootvp);
 178                 return (error);
 179         }
 180
 181         args.flag = 0;
 182         args.uid = 0;
 183         args.gid = 0;
 184         args.mode = 0777;
 185
 186         if ((error = ntfs_mountfs(rootvp, mp, &args, proc0.p_ucred)) != 0) {
 187                 mp->mnt_op->vfs_refcount--;
 188                 vfs_unbusy(mp);
 189                 kfree(mp, M_MOUNT);
 190                 vrele(rootvp);
 191                 return (error);
 192         }
 193         mountlist_insert(mp, MNTINS_LAST);
 194         (void)ntfs_statfs(mp, &mp->mnt_stat, proc0.p_ucred);
 195         vfs_unbusy(mp);
 196         return (0);
 197 }
 198
 199 static void
 200 ntfs_init(void)
 201 {
 202         ntfs_nthashinit();
 203         ntfs_toupper_init();
 204 }
 205
 206 #elif defined(__DragonFly__)
 207
 208 static int
 209 ntfs_init(struct vfsconf *vcp)
 210 {
 211         ntfs_nthashinit();
 212         ntfs_toupper_init();
 213         return 0;
 214 }
 215
 216 #endif /* NetBSD */
 217
 218 static int
 219 ntfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
 220 {
 221         size_t          size;
 222         int             error;
 223         struct vnode    *devvp;
 224         struct ntfs_args args;
 225         struct nlookupdata nd;
 226         struct vnode *rootvp;
 227
 228         error = 0;
 229 #ifdef __DragonFly__
 230         /*
 231          * Use NULL path to flag a root mount
 232          */
 233         if( path == NULL) {
 234                 /*
 235                  ***
 236                  * Mounting root file system
 237                  ***
 238                  */
 239
 240                 /* Get vnode for root device*/
 241                 if( bdevvp( rootdev, &rootvp))
 242                         panic("ffs_mountroot: can't setup bdevvp for root");
 243
 244                 /*
 245                  * FS specific handling
 246                  */
 247                 mp->mnt_flag |= MNT_RDONLY;     /* XXX globally applicable?*/
 248
 249                 /*
 250                  * Attempt mount
 251                  */
 252                 if( ( error = ntfs_mountfs(rootvp, mp, &args, cred)) != 0) {
 253                         /* fs specific cleanup (if any)*/
 254                         goto error_1;
 255                 }
 256
 257                 goto dostatfs;          /* success*/
 258
 259         }
 260 #endif /* FreeBSD */
 261
 262         /*
 263          ***
 264          * Mounting non-root file system or updating a file system
 265          ***
 266          */
 267
 268         /* copy in user arguments*/
 269         error = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
 270         if (error)
 271                 goto error_1;           /* can't get arguments*/
 272
 273         /*
 274          * If updating, check whether changing from read-only to
 275          * read/write; if there is no device name, that's all we do.
 276          */
 277         if (mp->mnt_flag & MNT_UPDATE) {
 278                 /* if not updating name...*/
 279                 if (args.fspec == 0) {
 280                         /*
 281                          * Process export requests.  Jumping to "success"
 282                          * will return the vfs_export() error code.
 283                          */
 284                         struct ntfsmount *ntm = VFSTONTFS(mp);
 285                         error = vfs_export(mp, &ntm->ntm_export, &args.export);
 286                         goto success;
 287                 }
 288
 289                 kprintf("ntfs_mount(): MNT_UPDATE not supported\n");
 290                 error = EINVAL;
 291                 goto error_1;
 292         }
 293
 294         /*
 295          * Not an update, or updating the name: look up the name
 296          * and verify that it refers to a sensible block device.
 297          */
 298         devvp = NULL;
 299         error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW);
 300         if (error == 0)
 301                 error = nlookup(&nd);
 302         if (error == 0)
 303                 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp);
 304         nlookup_done(&nd);
 305         if (error)
 306                 goto error_1;
 307
 308 #if defined(__DragonFly__)
 309         if (!vn_isdisk(devvp, &error))
 310                 goto error_2;
 311 #else
 312         if (devvp->v_type != VBLK) {
 313                 error = ENOTBLK;
 314                 goto error_2;
 315         }
 316         if (devvp->v_umajor >= nblkdev) {
 317                 error = ENXIO;
 318                 goto error_2;
 319         }
 320 #endif
 321         if (mp->mnt_flag & MNT_UPDATE) {
 322 #if 0
 323                 /*
 324                  ********************
 325                  * UPDATE
 326                  ********************
 327                  */
 328
 329                 if (devvp != ntmp->um_devvp)
 330                         error = EINVAL; /* needs translation */
 331                 else
 332                         vrele(devvp);
 333                 /*
 334                  * Update device name only on success
 335                  */
 336                 if( !error) {
 337                         /* Save "mounted from" info for mount point (NULL pad)*/
 338                         copyinstr(      args.fspec,
 339                                         mp->mnt_stat.f_mntfromname,
 340                                         MNAMELEN - 1,
 341                                         &size);
 342                         bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
 343                 }
 344 #endif
 345         } else {
 346                 /*
 347                  ********************
 348                  * NEW MOUNT
 349                  ********************
 350                  */
 351
 352                 /* Save "mounted from" info for mount point (NULL pad)*/
 353                 copyinstr(      args.fspec,                     /* device name*/
 354                                 mp->mnt_stat.f_mntfromname,     /* save area*/
 355                                 MNAMELEN - 1,                   /* max size*/
 356                                 &size);                         /* real size*/
 357                 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
 358
 359                 error = ntfs_mountfs(devvp, mp, &args, cred);
 360         }
 361         if (error) {
 362                 goto error_2;
 363         }
 364
 365 #ifdef __DragonFly__
 366 dostatfs:
 367 #endif
 368         /*
 369          * Initialize FS stat information in mount struct; uses
 370          * mp->mnt_stat.f_mntfromname.
 371          *
 372          * This code is common to root and non-root mounts
 373          */
 374         (void)VFS_STATFS(mp, &mp->mnt_stat, cred);
 375
 376         goto success;
 377
 378
 379 error_2:        /* error with devvp held*/
 380
 381         /* release devvp before failing*/
 382         vrele(devvp);
 383
 384 error_1:        /* no state to back out*/
 385
 386 success:
 387         return(error);
 388 }
 389
 390 /*
 391  * Common code for mount and mountroot
 392  */
 393 int
 394 ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp,
 395              struct ucred *cred)
 396 {
 397         struct buf *bp;
 398         struct ntfsmount *ntmp;
 399         cdev_t dev;
 400         int error, ronly, ncount, i;
 401         struct vnode *vp;
 402         char cs_local[ICONV_CSNMAXLEN];
 403         char cs_ntfs[ICONV_CSNMAXLEN];
 404
 405         /*
 406          * Disallow multiple mounts of the same device.
 407          * Disallow mounting of a device that is currently in use
 408          * (except for root, which might share swap device for miniroot).
 409          * Flush out any old buffers remaining from a previous use.
 410          */
 411         error = vfs_mountedon(devvp);
 412         if (error)
 413                 return (error);
 414         ncount = vcount(devvp);
 415 #if defined(__DragonFly__)
 416         if (devvp->v_object)
 417                 ncount -= 1;
 418 #endif
 419         if (ncount > 1)
 420                 return (EBUSY);
 421 #if defined(__DragonFly__)
 422         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 423         error = vinvalbuf(devvp, V_SAVE, 0, 0);
 424         VOP__UNLOCK(devvp, 0);
 425 #else
 426         error = vinvalbuf(devvp, V_SAVE, 0, 0);
 427 #endif
 428         if (error)
 429                 return (error);
 430
 431         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
 432         VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY);
 433         error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL);
 434         VOP__UNLOCK(devvp, 0);
 435         if (error)
 436                 return (error);
 437         dev = devvp->v_rdev;
 438
 439         bp = NULL;
 440
 441         error = bread(devvp, BBLOCK, BBSIZE, &bp);
 442         if (error)
 443                 goto out;
 444         ntmp = kmalloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
 445         bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
 446         brelse( bp );
 447         bp = NULL;
 448
 449         if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
 450                 error = EINVAL;
 451                 dprintf(("ntfs_mountfs: invalid boot block\n"));
 452                 goto out;
 453         }
 454
 455         {
 456                 int8_t cpr = ntmp->ntm_mftrecsz;
 457                 if( cpr > 0 )
 458                         ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
 459                 else
 460                         ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
 461         }
 462         dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
 463                 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
 464                 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
 465         dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
 466                 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
 467
 468         ntmp->ntm_mountp = mp;
 469         ntmp->ntm_dev = dev;
 470         ntmp->ntm_devvp = devvp;
 471         ntmp->ntm_uid = argsp->uid;
 472         ntmp->ntm_gid = argsp->gid;
 473         ntmp->ntm_mode = argsp->mode;
 474         ntmp->ntm_flag = argsp->flag;
 475
 476         if (argsp->flag & NTFS_MFLAG_KICONV && ntfs_iconv) {
 477                 bcopy(argsp->cs_local, cs_local, sizeof(cs_local));
 478                 bcopy(argsp->cs_ntfs, cs_ntfs, sizeof(cs_ntfs));
 479                 ntfs_82u_init(ntmp, cs_local, cs_ntfs);
 480                 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
 481         } else {
 482                 ntfs_82u_init(ntmp, NULL, NULL);
 483                 ntfs_u28_init(ntmp, ntmp->ntm_82u, NULL, NULL);
 484         }
 485
 486         mp->mnt_data = (qaddr_t)ntmp;
 487
 488         dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
 489                 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
 490                 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
 491                 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
 492
 493         vfs_add_vnodeops(mp, &ntfs_vnode_vops, &mp->mnt_vn_norm_ops);
 494
 495         /*
 496          * We read in some system nodes to do not allow
 497          * reclaim them and to have everytime access to them.
 498          */
 499         {
 500                 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
 501                 for (i=0; i<3; i++) {
 502                         error = VFS_VGET(mp, NULL,
 503                                          pi[i], &(ntmp->ntm_sysvn[pi[i]]));
 504                         if(error)
 505                                 goto out1;
 506                         vsetflags(ntmp->ntm_sysvn[pi[i]], VSYSTEM);
 507                         vref(ntmp->ntm_sysvn[pi[i]]);
 508                         vput(ntmp->ntm_sysvn[pi[i]]);
 509                 }
 510         }
 511
 512         /* read the Unicode lowercase --> uppercase translation table,
 513          * if necessary */
 514         if ((error = ntfs_toupper_use(mp, ntmp)))
 515                 goto out1;
 516
 517         /*
 518          * Scan $BitMap and count free clusters
 519          */
 520         error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
 521         if(error)
 522                 goto out1;
 523
 524         /*
 525          * Read and translate to internal format attribute
 526          * definition file.
 527          */
 528         {
 529                 int num,j;
 530                 struct attrdef ad;
 531
 532                 /* Open $AttrDef */
 533                 error = VFS_VGET(mp, NULL, NTFS_ATTRDEFINO, &vp);
 534                 if(error)
 535                         goto out1;
 536
 537                 /* Count valid entries */
 538                 for(num=0;;num++) {
 539                         error = ntfs_readattr(ntmp, VTONT(vp),
 540                                         NTFS_A_DATA, NULL,
 541                                         num * sizeof(ad), sizeof(ad),
 542                                         &ad, NULL);
 543                         if (error)
 544                                 goto out1;
 545                         if (ad.ad_name[0] == 0)
 546                                 break;
 547                 }
 548
 549                 /* Alloc memory for attribute definitions */
 550                 MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
 551                         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         (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE);
 607 #endif
 608
 609         return (error);
 610 }
 611
 612 #if !defined(__DragonFly__)
 613 static int
 614 ntfs_start(struct mount *mp, int flags, struct thread *td)
 615 {
 616         return (0);
 617 }
 618 #endif
 619
 620 static int
 621 ntfs_unmount(struct mount *mp, int mntflags)
 622 {
 623         struct ntfsmount *ntmp;
 624         int error, ronly, flags, i;
 625
 626         dprintf(("ntfs_unmount: unmounting...\n"));
 627         ntmp = VFSTONTFS(mp);
 628
 629         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
 630         flags = 0;
 631         if(mntflags & MNT_FORCE)
 632                 flags |= FORCECLOSE;
 633
 634         dprintf(("ntfs_unmount: vflushing...\n"));
 635         error = vflush(mp, 0, flags | SKIPSYSTEM);
 636         if (error) {
 637                 kprintf("ntfs_unmount: vflush failed: %d\n",error);
 638                 return (error);
 639         }
 640
 641         /* Check if only system vnodes are left */
 642         for(i=0;i<NTFS_SYSNODESNUM;i++)
 643                  if((ntmp->ntm_sysvn[i]) &&
 644                     (ntmp->ntm_sysvn[i]->v_sysref.refcnt > 1)) return (EBUSY);
 645
 646         /* Dereference all system vnodes */
 647         for(i=0;i<NTFS_SYSNODESNUM;i++)
 648                  if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
 649
 650         /* vflush system vnodes */
 651         error = vflush(mp, 0, flags);
 652         if (error)
 653                 kprintf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
 654
 655         /* Check if the type of device node isn't VBAD before
 656          * touching v_cdevinfo.  If the device vnode is revoked, the
 657          * field is NULL and touching it causes null pointer derefercence.
 658          */
 659         if (ntmp->ntm_devvp->v_type != VBAD)
 660                 ntmp->ntm_devvp->v_rdev->si_mountpoint = NULL;
 661
 662         vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0);
 663
 664         error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE);
 665
 666         vrele(ntmp->ntm_devvp);
 667
 668         /* free the toupper table, if this has been last mounted ntfs volume */
 669         ntfs_toupper_unuse();
 670
 671         dprintf(("ntfs_umount: freeing memory...\n"));
 672         ntfs_u28_uninit(ntmp);
 673         ntfs_82u_uninit(ntmp);
 674         mp->mnt_data = (qaddr_t)0;
 675         mp->mnt_flag &= ~MNT_LOCAL;
 676         FREE(ntmp->ntm_ad, M_NTFSMNT);
 677         FREE(ntmp, M_NTFSMNT);
 678         return (error);
 679 }
 680
 681 static int
 682 ntfs_root(struct mount *mp, struct vnode **vpp)
 683 {
 684         struct vnode *nvp;
 685         int error = 0;
 686
 687         dprintf(("ntfs_root(): sysvn: %p\n",
 688                 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
 689         error = VFS_VGET(mp, NULL, (ino_t)NTFS_ROOTINO, &nvp);
 690         if(error) {
 691                 kprintf("ntfs_root: VFS_VGET failed: %d\n",error);
 692                 return (error);
 693         }
 694
 695         *vpp = nvp;
 696         return (0);
 697 }
 698
 699 #if !defined(__DragonFly__)
 700 static int
 701 ntfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
 702               struct thread *td)
 703 {
 704         kprintf("\nntfs_quotactl():\n");
 705         return EOPNOTSUPP;
 706 }
 707 #endif
 708
 709 int
 710 ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep)
 711 {
 712         struct vnode *vp;
 713         u_int8_t *tmp;
 714         int j, error;
 715         long cfree = 0;
 716         size_t bmsize, i;
 717
 718         vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
 719
 720         bmsize = VTOF(vp)->f_size;
 721
 722         MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
 723
 724         error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
 725                                0, bmsize, tmp, NULL);
 726         if (error)
 727                 goto out;
 728
 729         for(i=0;i<bmsize;i++)
 730                 for(j=0;j<8;j++)
 731                         if(~tmp[i] & (1 << j)) cfree++;
 732         *cfreep = cfree;
 733
 734     out:
 735         FREE(tmp, M_TEMP);
 736         return(error);
 737 }
 738
 739 static int
 740 ntfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
 741 {
 742         struct ntfsmount *ntmp = VFSTONTFS(mp);
 743         u_int64_t mftsize,mftallocated;
 744
 745         dprintf(("ntfs_statfs():\n"));
 746
 747         mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
 748         mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
 749
 750 #if defined(__DragonFly__)
 751         sbp->f_type = mp->mnt_vfc->vfc_typenum;
 752 #elif defined(__NetBSD__)
 753         sbp->f_type = 0;
 754 #else
 755         sbp->f_type = MOUNT_NTFS;
 756 #endif
 757         sbp->f_bsize = ntmp->ntm_bps;
 758         sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
 759         sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
 760         sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
 761         sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
 762         sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
 763                        sbp->f_ffree;
 764         if (sbp != &mp->mnt_stat) {
 765                 bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
 766                         (caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
 767         }
 768         sbp->f_flags = mp->mnt_flag;
 769 #ifdef __NetBSD__
 770         strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
 771 #endif
 772
 773         return (0);
 774 }
 775
 776 #if !defined(__DragonFly__)
 777 static int
 778 ntfs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct thread *td)
 779 {
 780         /*dprintf(("ntfs_sync():\n"));*/
 781         return (0);
 782 }
 783 #endif
 784
 785 /*ARGSUSED*/
 786 static int
 787 ntfs_fhtovp(struct mount *mp, struct vnode *rootvp,
 788             struct fid *fhp, struct vnode **vpp)
 789 {
 790         struct vnode *nvp;
 791         struct ntfid *ntfhp = (struct ntfid *)fhp;
 792         int error;
 793
 794         ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
 795
 796         if ((error = VFS_VGET(mp, NULL, ntfhp->ntfid_ino, &nvp)) != 0) {
 797                 *vpp = NULLVP;
 798                 return (error);
 799         }
 800         /* XXX as unlink/rmdir/mkdir/creat are not currently possible
 801          * with NTFS, we don't need to check anything else for now */
 802         *vpp = nvp;
 803
 804         return (0);
 805 }
 806
 807 static int
 808 ntfs_vptofh(struct vnode *vp, struct fid *fhp)
 809 {
 810         struct ntnode *ntp;
 811         struct ntfid *ntfhp;
 812
 813         ddprintf(("ntfs_fhtovp(): %p\n", vp));
 814
 815         ntp = VTONT(vp);
 816         ntfhp = (struct ntfid *)fhp;
 817         ntfhp->ntfid_len = sizeof(struct ntfid);
 818         ntfhp->ntfid_ino = ntp->i_number;
 819         /* ntfhp->ntfid_gen = ntp->i_gen; */
 820         return (0);
 821 }
 822
 823 int
 824 ntfs_vgetex(struct mount *mp, ino_t ino, u_int32_t attrtype, char *attrname,
 825             u_long lkflags, u_long flags, struct thread *td,
 826             struct vnode **vpp)
 827 {
 828         int error;
 829         struct ntfsmount *ntmp;
 830         struct ntnode *ip;
 831         struct fnode *fp;
 832         struct vnode *vp;
 833         enum vtype f_type;
 834
 835         dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
 836                 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
 837                 (u_long)flags ));
 838
 839         ntmp = VFSTONTFS(mp);
 840         *vpp = NULL;
 841
 842         /* Get ntnode */
 843         error = ntfs_ntlookup(ntmp, ino, &ip);
 844         if (error) {
 845                 kprintf("ntfs_vget: ntfs_ntget failed\n");
 846                 return (error);
 847         }
 848
 849         /* It may be not initialized fully, so force load it */
 850         if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
 851                 error = ntfs_loadntnode(ntmp, ip);
 852                 if(error) {
 853                         kprintf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %"PRId64"\n",
 854                                ip->i_number);
 855                         ntfs_ntput(ip);
 856                         return (error);
 857                 }
 858         }
 859
 860         error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
 861         if (error) {
 862                 kprintf("ntfs_vget: ntfs_fget failed\n");
 863                 ntfs_ntput(ip);
 864                 return (error);
 865         }
 866
 867         f_type = VINT;
 868         if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
 869                 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
 870                     (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
 871                         f_type = VDIR;
 872                 } else if (flags & VG_EXT) {
 873                         f_type = VINT;
 874                         fp->f_size = fp->f_allocated = 0;
 875                 } else {
 876                         f_type = VREG;
 877
 878                         error = ntfs_filesize(ntmp, fp,
 879                                               &fp->f_size, &fp->f_allocated);
 880                         if (error) {
 881                                 ntfs_ntput(ip);
 882                                 return (error);
 883                         }
 884                 }
 885
 886                 fp->f_flag |= FN_VALID;
 887         }
 888
 889         if (FTOV(fp)) {
 890                 VGET(FTOV(fp), lkflags);
 891                 *vpp = FTOV(fp);
 892                 ntfs_ntput(ip);
 893                 return (0);
 894         }
 895
 896         error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &vp, VLKTIMEOUT, 0);
 897         if(error) {
 898                 ntfs_frele(fp);
 899                 ntfs_ntput(ip);
 900                 return (error);
 901         }
 902         dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
 903
 904         fp->f_vp = vp;
 905         vp->v_data = fp;
 906         vp->v_type = f_type;
 907
 908         if (ino == NTFS_ROOTINO)
 909                 vsetflags(vp, VROOT);
 910
 911         /*
 912          * Normal files use the buffer cache
 913          */
 914         if (f_type == VREG)
 915                 vinitvmio(vp, fp->f_size, PAGE_SIZE, -1);
 916
 917         ntfs_ntput(ip);
 918
 919         KKASSERT(lkflags & LK_TYPE_MASK);
 920         /* XXX leave vnode locked exclusively from getnewvnode */
 921         *vpp = vp;
 922         return (0);
 923
 924 }
 925
 926 static int
 927 ntfs_vget(struct mount *mp, struct vnode *dvp, ino_t ino, struct vnode **vpp)
 928 {
 929         return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
 930                         LK_EXCLUSIVE | LK_RETRY, 0, curthread, vpp);
 931 }
 932
 933 #if defined(__DragonFly__)
 934 static struct vfsops ntfs_vfsops = {
 935         .vfs_mount =            ntfs_mount,
 936         .vfs_unmount =          ntfs_unmount,
 937         .vfs_root =             ntfs_root,
 938         .vfs_statfs =           ntfs_statfs,
 939         .vfs_sync =             vfs_stdsync,
 940         .vfs_vget =             ntfs_vget,
 941         .vfs_fhtovp =           ntfs_fhtovp,
 942         .vfs_checkexp =         ntfs_checkexp,
 943         .vfs_vptofh =           ntfs_vptofh,
 944         .vfs_init =             ntfs_init,
 945         .vfs_uninit =           ntfs_nthash_uninit /* see ntfs_ihash.c */
 946 };
 947 VFS_SET(ntfs_vfsops, ntfs, 0);
 948 MODULE_VERSION(ntfs, 1);
 949 #elif defined(__NetBSD__)
 950 extern struct vnodeopv_desc ntfs_vnodeop_opv_desc;
 951
 952 struct vnodeopv_desc *ntfs_vnodeopv_descs[] = {
 953         &ntfs_vnodeop_opv_desc,
 954         NULL,
 955 };
 956
 957 struct vfsops ntfs_vfsops = {
 958         MOUNT_NTFS,
 959         ntfs_mount,
 960         ntfs_start,
 961         ntfs_unmount,
 962         ntfs_root,
 963         ntfs_quotactl,
 964         ntfs_statfs,
 965         ntfs_sync,
 966         ntfs_vget,
 967         ntfs_fhtovp,
 968         ntfs_vptofh,
 969         ntfs_init,
 970         ntfs_sysctl,
 971         ntfs_mountroot,
 972         ntfs_checkexp,
 973         ntfs_vnodeopv_descs,
 974 };
 975 #else /* !NetBSD && !FreeBSD */
 976 static struct vfsops ntfs_vfsops = {
 977         ntfs_mount,
 978         ntfs_start,
 979         ntfs_unmount,
 980         ntfs_root,
 981         ntfs_quotactl,
 982         ntfs_statfs,
 983         ntfs_sync,
 984         ntfs_vget,
 985         ntfs_fhtovp,
 986         ntfs_vptofh,
 987         ntfs_init,
 988 };
 989 VFS_SET(ntfs_vfsops, ntfs, MOUNT_NTFS, 0);
 990 #endif
 991
 992