The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/fs/ntfs/ntfs_vfsops.c

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    1 /*      $NetBSD: ntfs_vfsops.c,v 1.23 1999/11/15 19:38:14 jdolecek Exp $        */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999 Semen Ustimenko
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: releng/6.0/sys/fs/ntfs/ntfs_vfsops.c 150746 2005-09-30 06:26:42Z delphij $
   29  */
   30 
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/namei.h>
   35 #include <sys/conf.h>
   36 #include <sys/proc.h>
   37 #include <sys/kernel.h>
   38 #include <sys/vnode.h>
   39 #include <sys/mount.h>
   40 #include <sys/bio.h>
   41 #include <sys/buf.h>
   42 #include <sys/fcntl.h>
   43 #include <sys/malloc.h>
   44 #include <sys/systm.h>
   45 
   46 #include <geom/geom.h>
   47 #include <geom/geom_vfs.h>
   48 
   49 #include <vm/vm.h>
   50 #include <vm/vm_param.h>
   51 #include <vm/vm_page.h>
   52 #include <vm/vm_object.h>
   53 #include <vm/vm_extern.h>
   54 
   55 /*#define NTFS_DEBUG 1*/
   56 #include <fs/ntfs/ntfs.h>
   57 #include <fs/ntfs/ntfs_inode.h>
   58 #include <fs/ntfs/ntfs_subr.h>
   59 #include <fs/ntfs/ntfs_vfsops.h>
   60 #include <fs/ntfs/ntfs_ihash.h>
   61 #include <fs/ntfs/ntfsmount.h>
   62 
   63 static MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure");
   64 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode",  "NTFS ntnode information");
   65 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode",  "NTFS fnode information");
   66 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir",  "NTFS dir buffer");
   67 
   68 struct sockaddr;
   69 
   70 static int      ntfs_mountfs(register struct vnode *, struct mount *, 
   71                                   struct thread *);
   72 static int      ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep);
   73 
   74 static vfs_init_t       ntfs_init;
   75 static vfs_uninit_t     ntfs_uninit;
   76 static vfs_vget_t       ntfs_vget;
   77 static vfs_fhtovp_t     ntfs_fhtovp;
   78 static vfs_cmount_t     ntfs_cmount;
   79 static vfs_mount_t      ntfs_mount;
   80 static vfs_root_t       ntfs_root;
   81 static vfs_statfs_t     ntfs_statfs;
   82 static vfs_unmount_t    ntfs_unmount;
   83 static vfs_vptofh_t     ntfs_vptofh;
   84 
   85 static b_strategy_t     ntfs_bufstrategy;
   86 
   87 /* 
   88  * Buffer operations for NTFS vnodes.
   89  * We punt on VOP_BMAP, so we need to do
   90  * strategy on the file's vnode rather
   91  * than the underlying device's
   92  */
   93 static struct buf_ops ntfs_vnbufops = {
   94         .bop_name     = "NTFS",
   95         .bop_strategy = ntfs_bufstrategy,
   96 };
   97 
   98 static int
   99 ntfs_init (
  100         struct vfsconf *vcp )
  101 {
  102         ntfs_nthashinit();
  103         ntfs_toupper_init();
  104         return 0;
  105 }
  106 
  107 static int
  108 ntfs_uninit (
  109         struct vfsconf *vcp )
  110 {
  111         ntfs_toupper_destroy();
  112         ntfs_nthashdestroy();
  113         return 0;
  114 }
  115 
  116 static int
  117 ntfs_cmount ( 
  118         struct mntarg *ma,
  119         void *data,
  120         int flags,
  121         struct thread *td )
  122 {
  123         int error;
  124         struct ntfs_args args;
  125 
  126         error = copyin(data, (caddr_t)&args, sizeof args);
  127         if (error)
  128                 return (error);
  129         ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
  130         ma = mount_arg(ma, "export", &args.export, sizeof args.export);
  131         ma = mount_argf(ma, "uid", "%d", args.uid);
  132         ma = mount_argf(ma, "gid", "%d", args.gid);
  133         ma = mount_argf(ma, "mode", "%d", args.mode);
  134         ma = mount_argb(ma, args.flag & NTFS_MFLAG_CASEINS, "nocaseins");
  135         ma = mount_argb(ma, args.flag & NTFS_MFLAG_ALLNAMES, "noallnames");
  136         if (args.flag & NTFS_MFLAG_KICONV) {
  137                 ma = mount_argsu(ma, "cs_ntfs", args.cs_ntfs, 64);
  138                 ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
  139         }
  140 
  141         error = kernel_mount(ma, flags);
  142 
  143         return (error);
  144 }
  145 
  146 static const char *ntfs_opts[] = {
  147         "from", "export", "uid", "gid", "mode", "caseins", "allnames",
  148         "kiconv", "cs_ntfs", "cs_local", NULL
  149 };
  150 
  151 static int
  152 ntfs_mount ( 
  153         struct mount *mp,
  154         struct thread *td )
  155 {
  156         int             err = 0, error;
  157         struct vnode    *devvp;
  158         struct nameidata ndp;
  159         char *from;
  160         struct export_args export;
  161 
  162         if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
  163                 return (EINVAL);
  164 
  165         from = vfs_getopts(mp->mnt_optnew, "from", &error);
  166         if (error)      
  167                 return (error);
  168 
  169         /*
  170          * If updating, check whether changing from read-only to
  171          * read/write.
  172          */
  173         if (mp->mnt_flag & MNT_UPDATE) {
  174                 error = vfs_copyopt(mp->mnt_optnew, "export",   
  175                     &export, sizeof export);
  176                 if ((error == 0) && export.ex_flags != 0) {
  177                         /*
  178                          * Process export requests.  Jumping to "success"
  179                          * will return the vfs_export() error code.
  180                          */
  181                         err = vfs_export(mp, &export);
  182                         goto success;
  183                 }
  184 
  185                 printf("ntfs_mount(): MNT_UPDATE not supported\n");
  186                 err = EINVAL;
  187                 goto error_1;
  188         }
  189 
  190         /*
  191          * Not an update, or updating the name: look up the name
  192          * and verify that it refers to a sensible block device.
  193          */
  194         NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
  195         err = namei(&ndp);
  196         if (err) {
  197                 /* can't get devvp!*/
  198                 goto error_1;
  199         }
  200         NDFREE(&ndp, NDF_ONLY_PNBUF);
  201         devvp = ndp.ni_vp;
  202 
  203         if (!vn_isdisk(devvp, &err))  {
  204                 vput(devvp);
  205                 return (err);
  206         }
  207 
  208         if (mp->mnt_flag & MNT_UPDATE) {
  209 #if 0
  210                 /*
  211                  ********************
  212                  * UPDATE
  213                  ********************
  214                  */
  215 
  216                 if (devvp != ntmp->um_devvp)
  217                         err = EINVAL;   /* needs translation */
  218                 vput(devvp);
  219                 if (err)
  220                         return (err);
  221 #endif
  222         } else {
  223                 /*
  224                  ********************
  225                  * NEW MOUNT
  226                  ********************
  227                  */
  228 
  229                 /*
  230                  * Since this is a new mount, we want the names for
  231                  * the device and the mount point copied in.  If an
  232                  * error occurs, the mountpoint is discarded by the
  233                  * upper level code.  Note that vfs_mount() handles
  234                  * copying the mountpoint f_mntonname for us, so we
  235                  * don't have to do it here unless we want to set it
  236                  * to something other than "path" for some rason.
  237                  */
  238                 /* Save "mounted from" info for mount point (NULL pad)*/
  239                 vfs_mountedfrom(mp, from);
  240 
  241                 err = ntfs_mountfs(devvp, mp, td);
  242         }
  243         if (err) {
  244                 vrele(devvp);
  245                 return (err);
  246         }
  247 
  248         goto success;
  249 
  250 error_1:        /* no state to back out*/
  251         /* XXX: missing NDFREE(&ndp, ...) */
  252 
  253 success:
  254         return(err);
  255 }
  256 
  257 /*
  258  * Common code for mount and mountroot
  259  */
  260 int
  261 ntfs_mountfs(devvp, mp, td)
  262         register struct vnode *devvp;
  263         struct mount *mp;
  264         struct thread *td;
  265 {
  266         struct buf *bp;
  267         struct ntfsmount *ntmp;
  268         struct cdev *dev = devvp->v_rdev;
  269         int error, ronly, i, v;
  270         struct vnode *vp;
  271         struct g_consumer *cp;
  272         char *cs_ntfs, *cs_local;
  273 
  274         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
  275         DROP_GIANT();
  276         g_topology_lock();
  277         error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1);
  278         g_topology_unlock();
  279         PICKUP_GIANT();
  280         VOP_UNLOCK(devvp, 0, td);
  281         if (error)
  282                 return (error);
  283 
  284         bp = NULL;
  285 
  286         error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
  287         if (error)
  288                 goto out;
  289         ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
  290         bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
  291         /*
  292          * We must not cache the boot block if its size is not exactly
  293          * one cluster in order to avoid confusing the buffer cache when
  294          * the boot file is read later by ntfs_readntvattr_plain(), which
  295          * reads a cluster at a time.
  296          */
  297         if (ntfs_cntob(1) != BBSIZE)
  298                 bp->b_flags |= B_NOCACHE;
  299         brelse( bp );
  300         bp = NULL;
  301 
  302         if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
  303                 error = EINVAL;
  304                 dprintf(("ntfs_mountfs: invalid boot block\n"));
  305                 goto out;
  306         }
  307 
  308         {
  309                 int8_t cpr = ntmp->ntm_mftrecsz;
  310                 if( cpr > 0 )
  311                         ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
  312                 else
  313                         ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
  314         }
  315         dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
  316                 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
  317                 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
  318         dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
  319                 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
  320 
  321         ntmp->ntm_mountp = mp;
  322         ntmp->ntm_devvp = devvp;
  323         if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v))
  324                 ntmp->ntm_uid = v;
  325         if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v))
  326                 ntmp->ntm_gid = v;
  327         if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v))
  328                 ntmp->ntm_mode = v;
  329         vfs_flagopt(mp->mnt_optnew,
  330             "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS);
  331         vfs_flagopt(mp->mnt_optnew,
  332             "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES);
  333         ntmp->ntm_cp = cp;
  334         ntmp->ntm_bo = &devvp->v_bufobj;
  335 
  336         cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
  337         if (error)
  338                 goto out;
  339         cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error);
  340         if (error)
  341                 goto out;
  342         /* Copy in the 8-bit to Unicode conversion table */
  343         /* Initialize Unicode to 8-bit table from 8toU table */
  344         ntfs_82u_init(ntmp, cs_local, cs_ntfs);
  345         if (cs_local != NULL && cs_ntfs != NULL)
  346                 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
  347         else
  348                 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs);
  349 
  350         mp->mnt_data = (qaddr_t)ntmp;
  351 
  352         dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
  353                 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
  354                 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
  355                 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
  356 
  357         /*
  358          * We read in some system nodes to do not allow 
  359          * reclaim them and to have everytime access to them.
  360          */ 
  361         {
  362                 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
  363                 for (i=0; i<3; i++) {
  364                         error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE,
  365                                          &(ntmp->ntm_sysvn[pi[i]]));
  366                         if(error)
  367                                 goto out1;
  368                         ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
  369                         VREF(ntmp->ntm_sysvn[pi[i]]);
  370                         vput(ntmp->ntm_sysvn[pi[i]]);
  371                 }
  372         }
  373 
  374         /* read the Unicode lowercase --> uppercase translation table,
  375          * if necessary */
  376         if ((error = ntfs_toupper_use(mp, ntmp)))
  377                 goto out1;
  378 
  379         /*
  380          * Scan $BitMap and count free clusters
  381          */
  382         error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
  383         if(error)
  384                 goto out1;
  385 
  386         /*
  387          * Read and translate to internal format attribute
  388          * definition file. 
  389          */
  390         {
  391                 int num,j;
  392                 struct attrdef ad;
  393 
  394                 /* Open $AttrDef */
  395                 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp );
  396                 if(error) 
  397                         goto out1;
  398 
  399                 /* Count valid entries */
  400                 for(num=0;;num++) {
  401                         error = ntfs_readattr(ntmp, VTONT(vp),
  402                                         NTFS_A_DATA, NULL,
  403                                         num * sizeof(ad), sizeof(ad),
  404                                         &ad, NULL);
  405                         if (error)
  406                                 goto out1;
  407                         if (ad.ad_name[0] == 0)
  408                                 break;
  409                 }
  410 
  411                 /* Alloc memory for attribute definitions */
  412                 MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
  413                         num * sizeof(struct ntvattrdef),
  414                         M_NTFSMNT, M_WAITOK);
  415 
  416                 ntmp->ntm_adnum = num;
  417 
  418                 /* Read them and translate */
  419                 for(i=0;i<num;i++){
  420                         error = ntfs_readattr(ntmp, VTONT(vp),
  421                                         NTFS_A_DATA, NULL,
  422                                         i * sizeof(ad), sizeof(ad),
  423                                         &ad, NULL);
  424                         if (error)
  425                                 goto out1;
  426                         j = 0;
  427                         do {
  428                                 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
  429                         } while(ad.ad_name[j++]);
  430                         ntmp->ntm_ad[i].ad_namelen = j - 1;
  431                         ntmp->ntm_ad[i].ad_type = ad.ad_type;
  432                 }
  433 
  434                 vput(vp);
  435         }
  436 
  437         mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
  438         mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
  439         mp->mnt_maxsymlinklen = 0;
  440         mp->mnt_flag |= MNT_LOCAL;
  441         return (0);
  442 
  443 out1:
  444         for(i=0;i<NTFS_SYSNODESNUM;i++)
  445                 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
  446 
  447         if (vflush(mp, 0, 0, td))
  448                 dprintf(("ntfs_mountfs: vflush failed\n"));
  449 
  450 out:
  451         if (bp)
  452                 brelse(bp);
  453 
  454         DROP_GIANT();
  455         g_topology_lock();
  456         g_vfs_close(cp, td);
  457         g_topology_unlock();
  458         PICKUP_GIANT();
  459         
  460         return (error);
  461 }
  462 
  463 static int
  464 ntfs_unmount( 
  465         struct mount *mp,
  466         int mntflags,
  467         struct thread *td)
  468 {
  469         struct ntfsmount *ntmp;
  470         int error, flags, i;
  471 
  472         dprintf(("ntfs_unmount: unmounting...\n"));
  473         ntmp = VFSTONTFS(mp);
  474 
  475         flags = 0;
  476         if(mntflags & MNT_FORCE)
  477                 flags |= FORCECLOSE;
  478 
  479         dprintf(("ntfs_unmount: vflushing...\n"));
  480         error = vflush(mp, 0, flags | SKIPSYSTEM, td);
  481         if (error) {
  482                 printf("ntfs_unmount: vflush failed: %d\n",error);
  483                 return (error);
  484         }
  485 
  486         /* Check if only system vnodes are rest */
  487         for(i=0;i<NTFS_SYSNODESNUM;i++)
  488                  if((ntmp->ntm_sysvn[i]) && 
  489                     (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
  490 
  491         /* Dereference all system vnodes */
  492         for(i=0;i<NTFS_SYSNODESNUM;i++)
  493                  if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
  494 
  495         /* vflush system vnodes */
  496         error = vflush(mp, 0, flags, td);
  497         if (error)
  498                 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
  499 
  500         vinvalbuf(ntmp->ntm_devvp, V_SAVE, td, 0, 0);
  501 
  502         DROP_GIANT();
  503         g_topology_lock();
  504         g_vfs_close(ntmp->ntm_cp, td);
  505         g_topology_unlock();
  506         PICKUP_GIANT();
  507 
  508         vrele(ntmp->ntm_devvp);
  509 
  510         /* free the toupper table, if this has been last mounted ntfs volume */
  511         ntfs_toupper_unuse();
  512 
  513         dprintf(("ntfs_umount: freeing memory...\n"));
  514         ntfs_u28_uninit(ntmp);
  515         ntfs_82u_uninit(ntmp);
  516         mp->mnt_data = (qaddr_t)0;
  517         mp->mnt_flag &= ~MNT_LOCAL;
  518         FREE(ntmp->ntm_ad, M_NTFSMNT);
  519         FREE(ntmp, M_NTFSMNT);
  520         return (error);
  521 }
  522 
  523 static int
  524 ntfs_root(
  525         struct mount *mp,
  526         int flags,
  527         struct vnode **vpp,
  528         struct thread *td )
  529 {
  530         struct vnode *nvp;
  531         int error = 0;
  532 
  533         dprintf(("ntfs_root(): sysvn: %p\n",
  534                 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
  535         error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp);
  536         if(error) {
  537                 printf("ntfs_root: VFS_VGET failed: %d\n",error);
  538                 return (error);
  539         }
  540 
  541         *vpp = nvp;
  542         return (0);
  543 }
  544 
  545 static int
  546 ntfs_calccfree(
  547         struct ntfsmount *ntmp,
  548         cn_t *cfreep)
  549 {
  550         struct vnode *vp;
  551         u_int8_t *tmp;
  552         int j, error;
  553         long cfree = 0;
  554         size_t bmsize, i;
  555 
  556         vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
  557 
  558         bmsize = VTOF(vp)->f_size;
  559 
  560         MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
  561 
  562         error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
  563                                0, bmsize, tmp, NULL);
  564         if (error)
  565                 goto out;
  566 
  567         for(i=0;i<bmsize;i++)
  568                 for(j=0;j<8;j++)
  569                         if(~tmp[i] & (1 << j)) cfree++;
  570         *cfreep = cfree;
  571 
  572     out:
  573         FREE(tmp, M_TEMP);
  574         return(error);
  575 }
  576 
  577 static int
  578 ntfs_statfs(
  579         struct mount *mp,
  580         struct statfs *sbp,
  581         struct thread *td)
  582 {
  583         struct ntfsmount *ntmp = VFSTONTFS(mp);
  584         u_int64_t mftsize,mftallocated;
  585 
  586         dprintf(("ntfs_statfs():\n"));
  587 
  588         mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
  589         mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
  590 
  591         sbp->f_type = mp->mnt_vfc->vfc_typenum;
  592         sbp->f_bsize = ntmp->ntm_bps;
  593         sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
  594         sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
  595         sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
  596         sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
  597         sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
  598                        sbp->f_ffree;
  599         sbp->f_flags = mp->mnt_flag;
  600 
  601         return (0);
  602 }
  603 
  604 /*ARGSUSED*/
  605 static int
  606 ntfs_fhtovp(
  607         struct mount *mp,
  608         struct fid *fhp,
  609         struct vnode **vpp)
  610 {
  611         struct vnode *nvp;
  612         struct ntfid *ntfhp = (struct ntfid *)fhp;
  613         int error;
  614 
  615         ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
  616 
  617         if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
  618                 *vpp = NULLVP;
  619                 return (error);
  620         }
  621         /* XXX as unlink/rmdir/mkdir/creat are not currently possible
  622          * with NTFS, we don't need to check anything else for now */
  623         *vpp = nvp;
  624         vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread);
  625         return (0);
  626 }
  627 
  628 static int
  629 ntfs_vptofh(
  630         struct vnode *vp,
  631         struct fid *fhp)
  632 {
  633         register struct ntnode *ntp;
  634         register struct ntfid *ntfhp;
  635 
  636         ddprintf(("ntfs_fhtovp(): %p\n", vp));
  637 
  638         ntp = VTONT(vp);
  639         ntfhp = (struct ntfid *)fhp;
  640         ntfhp->ntfid_len = sizeof(struct ntfid);
  641         ntfhp->ntfid_ino = ntp->i_number;
  642         /* ntfhp->ntfid_gen = ntp->i_gen; */
  643         return (0);
  644 }
  645 
  646 int
  647 ntfs_vgetex(
  648         struct mount *mp,
  649         ino_t ino,
  650         u_int32_t attrtype,
  651         char *attrname,
  652         u_long lkflags,
  653         u_long flags,
  654         struct thread *td,
  655         struct vnode **vpp) 
  656 {
  657         int error;
  658         register struct ntfsmount *ntmp;
  659         struct ntnode *ip;
  660         struct fnode *fp;
  661         struct vnode *vp;
  662         enum vtype f_type;
  663 
  664         dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
  665                 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
  666                 (u_long)flags));
  667 
  668         ntmp = VFSTONTFS(mp);
  669         *vpp = NULL;
  670 
  671         /* Get ntnode */
  672         error = ntfs_ntlookup(ntmp, ino, &ip);
  673         if (error) {
  674                 printf("ntfs_vget: ntfs_ntget failed\n");
  675                 return (error);
  676         }
  677 
  678         /* It may be not initialized fully, so force load it */
  679         if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
  680                 error = ntfs_loadntnode(ntmp, ip);
  681                 if(error) {
  682                         printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
  683                                ip->i_number);
  684                         ntfs_ntput(ip);
  685                         return (error);
  686                 }
  687         }
  688 
  689         error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
  690         if (error) {
  691                 printf("ntfs_vget: ntfs_fget failed\n");
  692                 ntfs_ntput(ip);
  693                 return (error);
  694         }
  695 
  696         f_type = VNON;
  697         if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
  698                 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
  699                     (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
  700                         f_type = VDIR;
  701                 } else if (flags & VG_EXT) {
  702                         f_type = VNON;
  703                         fp->f_size = fp->f_allocated = 0;
  704                 } else {
  705                         f_type = VREG;  
  706 
  707                         error = ntfs_filesize(ntmp, fp, 
  708                                               &fp->f_size, &fp->f_allocated);
  709                         if (error) {
  710                                 ntfs_ntput(ip);
  711                                 return (error);
  712                         }
  713                 }
  714 
  715                 fp->f_flag |= FN_VALID;
  716         }
  717 
  718         if (FTOV(fp)) {
  719                 vget(FTOV(fp), lkflags, td);
  720                 *vpp = FTOV(fp);
  721                 ntfs_ntput(ip);
  722                 return (0);
  723         }
  724 
  725         error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp);
  726         if(error) {
  727                 ntfs_frele(fp);
  728                 ntfs_ntput(ip);
  729                 return (error);
  730         }
  731         dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
  732 
  733         fp->f_vp = vp;
  734         vp->v_data = fp;
  735         vp->v_type = f_type;
  736 
  737         vp->v_bufobj.bo_ops = &ntfs_vnbufops;
  738         vp->v_bufobj.bo_private = vp;
  739 
  740         if (ino == NTFS_ROOTINO)
  741                 vp->v_vflag |= VV_ROOT;
  742 
  743         ntfs_ntput(ip);
  744 
  745         if (lkflags & LK_TYPE_MASK) {
  746                 error = vn_lock(vp, lkflags, td);
  747                 if (error) {
  748                         vput(vp);
  749                         return (error);
  750                 }
  751         }
  752 
  753         *vpp = vp;
  754         return (0);
  755         
  756 }
  757 
  758 static int
  759 ntfs_vget(
  760         struct mount *mp,
  761         ino_t ino,
  762         int lkflags,
  763         struct vnode **vpp) 
  764 {
  765         return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0,
  766             curthread, vpp);
  767 }
  768 
  769 static void
  770 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp)
  771 {
  772         struct vnode *vp;
  773         int rc;
  774 
  775         vp = bo->bo_private;
  776         KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p",
  777             vp, &vp->v_bufobj, bo));
  778         rc = VOP_STRATEGY(vp, bp);
  779         KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, "
  780                 "vp=%p, rc=%d", bp, vp, rc));
  781 }
  782 
  783 static struct vfsops ntfs_vfsops = {
  784         .vfs_fhtovp =   ntfs_fhtovp,
  785         .vfs_init =     ntfs_init,
  786         .vfs_cmount =   ntfs_cmount,
  787         .vfs_mount =    ntfs_mount,
  788         .vfs_root =     ntfs_root,
  789         .vfs_statfs =   ntfs_statfs,
  790         .vfs_uninit =   ntfs_uninit,
  791         .vfs_unmount =  ntfs_unmount,
  792         .vfs_vget =     ntfs_vget,
  793         .vfs_vptofh =   ntfs_vptofh,
  794 };
  795 VFS_SET(ntfs_vfsops, ntfs, 0);
  796 MODULE_VERSION(ntfs, 1);

Cache object: 1c83dfe49048fd941d16c87cc09e11a7


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