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/6.2/sys/fs/ntfs/ntfs_vfsops.c 163172 2006-10-09 19:47:17Z tegge $
   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 
  161         if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
  162                 return (EINVAL);
  163 
  164         from = vfs_getopts(mp->mnt_optnew, "from", &error);
  165         if (error)      
  166                 return (error);
  167 
  168         /*
  169          * If updating, check whether changing from read-only to
  170          * read/write.
  171          */
  172         if (mp->mnt_flag & MNT_UPDATE) {
  173                 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
  174                         /* Process export requests in vfs_mount.c */
  175                         goto success;
  176                 } else {
  177                         printf("ntfs_mount(): MNT_UPDATE not supported\n");
  178                         err = EINVAL;
  179                         goto error_1;
  180                 }
  181         }
  182 
  183         /*
  184          * Not an update, or updating the name: look up the name
  185          * and verify that it refers to a sensible block device.
  186          */
  187         NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
  188         err = namei(&ndp);
  189         if (err) {
  190                 /* can't get devvp!*/
  191                 goto error_1;
  192         }
  193         NDFREE(&ndp, NDF_ONLY_PNBUF);
  194         devvp = ndp.ni_vp;
  195 
  196         if (!vn_isdisk(devvp, &err))  {
  197                 vput(devvp);
  198                 return (err);
  199         }
  200 
  201         if (mp->mnt_flag & MNT_UPDATE) {
  202 #if 0
  203                 /*
  204                  ********************
  205                  * UPDATE
  206                  ********************
  207                  */
  208 
  209                 if (devvp != ntmp->um_devvp)
  210                         err = EINVAL;   /* needs translation */
  211                 vput(devvp);
  212                 if (err)
  213                         return (err);
  214 #endif
  215         } else {
  216                 /*
  217                  ********************
  218                  * NEW MOUNT
  219                  ********************
  220                  */
  221 
  222                 /*
  223                  * Since this is a new mount, we want the names for
  224                  * the device and the mount point copied in.  If an
  225                  * error occurs, the mountpoint is discarded by the
  226                  * upper level code.  Note that vfs_mount() handles
  227                  * copying the mountpoint f_mntonname for us, so we
  228                  * don't have to do it here unless we want to set it
  229                  * to something other than "path" for some rason.
  230                  */
  231                 /* Save "mounted from" info for mount point (NULL pad)*/
  232                 vfs_mountedfrom(mp, from);
  233 
  234                 err = ntfs_mountfs(devvp, mp, td);
  235         }
  236         if (err) {
  237                 vrele(devvp);
  238                 return (err);
  239         }
  240 
  241         goto success;
  242 
  243 error_1:        /* no state to back out*/
  244         /* XXX: missing NDFREE(&ndp, ...) */
  245 
  246 success:
  247         return(err);
  248 }
  249 
  250 /*
  251  * Common code for mount and mountroot
  252  */
  253 int
  254 ntfs_mountfs(devvp, mp, td)
  255         register struct vnode *devvp;
  256         struct mount *mp;
  257         struct thread *td;
  258 {
  259         struct buf *bp;
  260         struct ntfsmount *ntmp;
  261         struct cdev *dev = devvp->v_rdev;
  262         int error, ronly, i, v;
  263         struct vnode *vp;
  264         struct g_consumer *cp;
  265         char *cs_ntfs, *cs_local;
  266 
  267         ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
  268         DROP_GIANT();
  269         g_topology_lock();
  270         error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1);
  271         g_topology_unlock();
  272         PICKUP_GIANT();
  273         VOP_UNLOCK(devvp, 0, td);
  274         if (error)
  275                 return (error);
  276 
  277         bp = NULL;
  278 
  279         error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
  280         if (error)
  281                 goto out;
  282         ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
  283         bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
  284         /*
  285          * We must not cache the boot block if its size is not exactly
  286          * one cluster in order to avoid confusing the buffer cache when
  287          * the boot file is read later by ntfs_readntvattr_plain(), which
  288          * reads a cluster at a time.
  289          */
  290         if (ntfs_cntob(1) != BBSIZE)
  291                 bp->b_flags |= B_NOCACHE;
  292         brelse( bp );
  293         bp = NULL;
  294 
  295         if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
  296                 error = EINVAL;
  297                 dprintf(("ntfs_mountfs: invalid boot block\n"));
  298                 goto out;
  299         }
  300 
  301         {
  302                 int8_t cpr = ntmp->ntm_mftrecsz;
  303                 if( cpr > 0 )
  304                         ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
  305                 else
  306                         ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
  307         }
  308         dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
  309                 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
  310                 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
  311         dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
  312                 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
  313 
  314         ntmp->ntm_mountp = mp;
  315         ntmp->ntm_devvp = devvp;
  316         if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v))
  317                 ntmp->ntm_uid = v;
  318         if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v))
  319                 ntmp->ntm_gid = v;
  320         if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v))
  321                 ntmp->ntm_mode = v;
  322         vfs_flagopt(mp->mnt_optnew,
  323             "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS);
  324         vfs_flagopt(mp->mnt_optnew,
  325             "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES);
  326         ntmp->ntm_cp = cp;
  327         ntmp->ntm_bo = &devvp->v_bufobj;
  328 
  329         cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
  330         if (error)
  331                 goto out;
  332         cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error);
  333         if (error)
  334                 goto out;
  335         /* Copy in the 8-bit to Unicode conversion table */
  336         /* Initialize Unicode to 8-bit table from 8toU table */
  337         ntfs_82u_init(ntmp, cs_local, cs_ntfs);
  338         if (cs_local != NULL && cs_ntfs != NULL)
  339                 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
  340         else
  341                 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs);
  342 
  343         mp->mnt_data = (qaddr_t)ntmp;
  344 
  345         dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
  346                 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
  347                 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
  348                 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
  349 
  350         /*
  351          * We read in some system nodes to do not allow 
  352          * reclaim them and to have everytime access to them.
  353          */ 
  354         {
  355                 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
  356                 for (i=0; i<3; i++) {
  357                         error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE,
  358                                          &(ntmp->ntm_sysvn[pi[i]]));
  359                         if(error)
  360                                 goto out1;
  361                         ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
  362                         VREF(ntmp->ntm_sysvn[pi[i]]);
  363                         vput(ntmp->ntm_sysvn[pi[i]]);
  364                 }
  365         }
  366 
  367         /* read the Unicode lowercase --> uppercase translation table,
  368          * if necessary */
  369         if ((error = ntfs_toupper_use(mp, ntmp)))
  370                 goto out1;
  371 
  372         /*
  373          * Scan $BitMap and count free clusters
  374          */
  375         error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
  376         if(error)
  377                 goto out1;
  378 
  379         /*
  380          * Read and translate to internal format attribute
  381          * definition file. 
  382          */
  383         {
  384                 int num,j;
  385                 struct attrdef ad;
  386 
  387                 /* Open $AttrDef */
  388                 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp );
  389                 if(error) 
  390                         goto out1;
  391 
  392                 /* Count valid entries */
  393                 for(num=0;;num++) {
  394                         error = ntfs_readattr(ntmp, VTONT(vp),
  395                                         NTFS_A_DATA, NULL,
  396                                         num * sizeof(ad), sizeof(ad),
  397                                         &ad, NULL);
  398                         if (error)
  399                                 goto out1;
  400                         if (ad.ad_name[0] == 0)
  401                                 break;
  402                 }
  403 
  404                 /* Alloc memory for attribute definitions */
  405                 MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
  406                         num * sizeof(struct ntvattrdef),
  407                         M_NTFSMNT, M_WAITOK);
  408 
  409                 ntmp->ntm_adnum = num;
  410 
  411                 /* Read them and translate */
  412                 for(i=0;i<num;i++){
  413                         error = ntfs_readattr(ntmp, VTONT(vp),
  414                                         NTFS_A_DATA, NULL,
  415                                         i * sizeof(ad), sizeof(ad),
  416                                         &ad, NULL);
  417                         if (error)
  418                                 goto out1;
  419                         j = 0;
  420                         do {
  421                                 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
  422                         } while(ad.ad_name[j++]);
  423                         ntmp->ntm_ad[i].ad_namelen = j - 1;
  424                         ntmp->ntm_ad[i].ad_type = ad.ad_type;
  425                 }
  426 
  427                 vput(vp);
  428         }
  429 
  430         mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
  431         mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
  432         mp->mnt_maxsymlinklen = 0;
  433         MNT_ILOCK(mp);
  434         mp->mnt_flag |= MNT_LOCAL;
  435         MNT_IUNLOCK(mp);
  436         return (0);
  437 
  438 out1:
  439         for(i=0;i<NTFS_SYSNODESNUM;i++)
  440                 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
  441 
  442         if (vflush(mp, 0, 0, td))
  443                 dprintf(("ntfs_mountfs: vflush failed\n"));
  444 
  445 out:
  446         if (bp)
  447                 brelse(bp);
  448 
  449         DROP_GIANT();
  450         g_topology_lock();
  451         g_vfs_close(cp, td);
  452         g_topology_unlock();
  453         PICKUP_GIANT();
  454         
  455         return (error);
  456 }
  457 
  458 static int
  459 ntfs_unmount( 
  460         struct mount *mp,
  461         int mntflags,
  462         struct thread *td)
  463 {
  464         struct ntfsmount *ntmp;
  465         int error, flags, i;
  466 
  467         dprintf(("ntfs_unmount: unmounting...\n"));
  468         ntmp = VFSTONTFS(mp);
  469 
  470         flags = 0;
  471         if(mntflags & MNT_FORCE)
  472                 flags |= FORCECLOSE;
  473 
  474         dprintf(("ntfs_unmount: vflushing...\n"));
  475         error = vflush(mp, 0, flags | SKIPSYSTEM, td);
  476         if (error) {
  477                 printf("ntfs_unmount: vflush failed: %d\n",error);
  478                 return (error);
  479         }
  480 
  481         /* Check if only system vnodes are rest */
  482         for(i=0;i<NTFS_SYSNODESNUM;i++)
  483                  if((ntmp->ntm_sysvn[i]) && 
  484                     (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
  485 
  486         /* Dereference all system vnodes */
  487         for(i=0;i<NTFS_SYSNODESNUM;i++)
  488                  if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
  489 
  490         /* vflush system vnodes */
  491         error = vflush(mp, 0, flags, td);
  492         if (error)
  493                 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
  494 
  495         vinvalbuf(ntmp->ntm_devvp, V_SAVE, td, 0, 0);
  496 
  497         DROP_GIANT();
  498         g_topology_lock();
  499         g_vfs_close(ntmp->ntm_cp, td);
  500         g_topology_unlock();
  501         PICKUP_GIANT();
  502 
  503         vrele(ntmp->ntm_devvp);
  504 
  505         /* free the toupper table, if this has been last mounted ntfs volume */
  506         ntfs_toupper_unuse();
  507 
  508         dprintf(("ntfs_umount: freeing memory...\n"));
  509         ntfs_u28_uninit(ntmp);
  510         ntfs_82u_uninit(ntmp);
  511         mp->mnt_data = (qaddr_t)0;
  512         MNT_ILOCK(mp);
  513         mp->mnt_flag &= ~MNT_LOCAL;
  514         MNT_IUNLOCK(mp);
  515         FREE(ntmp->ntm_ad, M_NTFSMNT);
  516         FREE(ntmp, M_NTFSMNT);
  517         return (error);
  518 }
  519 
  520 static int
  521 ntfs_root(
  522         struct mount *mp,
  523         int flags,
  524         struct vnode **vpp,
  525         struct thread *td )
  526 {
  527         struct vnode *nvp;
  528         int error = 0;
  529 
  530         dprintf(("ntfs_root(): sysvn: %p\n",
  531                 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
  532         error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp);
  533         if(error) {
  534                 printf("ntfs_root: VFS_VGET failed: %d\n",error);
  535                 return (error);
  536         }
  537 
  538         *vpp = nvp;
  539         return (0);
  540 }
  541 
  542 static int
  543 ntfs_calccfree(
  544         struct ntfsmount *ntmp,
  545         cn_t *cfreep)
  546 {
  547         struct vnode *vp;
  548         u_int8_t *tmp;
  549         int j, error;
  550         long cfree = 0;
  551         size_t bmsize, i;
  552 
  553         vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
  554 
  555         bmsize = VTOF(vp)->f_size;
  556 
  557         MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
  558 
  559         error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
  560                                0, bmsize, tmp, NULL);
  561         if (error)
  562                 goto out;
  563 
  564         for(i=0;i<bmsize;i++)
  565                 for(j=0;j<8;j++)
  566                         if(~tmp[i] & (1 << j)) cfree++;
  567         *cfreep = cfree;
  568 
  569     out:
  570         FREE(tmp, M_TEMP);
  571         return(error);
  572 }
  573 
  574 static int
  575 ntfs_statfs(
  576         struct mount *mp,
  577         struct statfs *sbp,
  578         struct thread *td)
  579 {
  580         struct ntfsmount *ntmp = VFSTONTFS(mp);
  581         u_int64_t mftsize,mftallocated;
  582 
  583         dprintf(("ntfs_statfs():\n"));
  584 
  585         mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
  586         mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
  587 
  588         sbp->f_type = mp->mnt_vfc->vfc_typenum;
  589         sbp->f_bsize = ntmp->ntm_bps;
  590         sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
  591         sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
  592         sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
  593         sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
  594         sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
  595                        sbp->f_ffree;
  596         sbp->f_flags = mp->mnt_flag;
  597 
  598         return (0);
  599 }
  600 
  601 /*ARGSUSED*/
  602 static int
  603 ntfs_fhtovp(
  604         struct mount *mp,
  605         struct fid *fhp,
  606         struct vnode **vpp)
  607 {
  608         struct vnode *nvp;
  609         struct ntfid *ntfhp = (struct ntfid *)fhp;
  610         int error;
  611 
  612         ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
  613 
  614         if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
  615                 *vpp = NULLVP;
  616                 return (error);
  617         }
  618         /* XXX as unlink/rmdir/mkdir/creat are not currently possible
  619          * with NTFS, we don't need to check anything else for now */
  620         *vpp = nvp;
  621         vnode_create_vobject_off(nvp, VTOF(nvp)->f_size, curthread);
  622         return (0);
  623 }
  624 
  625 static int
  626 ntfs_vptofh(
  627         struct vnode *vp,
  628         struct fid *fhp)
  629 {
  630         register struct ntnode *ntp;
  631         register struct ntfid *ntfhp;
  632 
  633         ddprintf(("ntfs_fhtovp(): %p\n", vp));
  634 
  635         ntp = VTONT(vp);
  636         ntfhp = (struct ntfid *)fhp;
  637         ntfhp->ntfid_len = sizeof(struct ntfid);
  638         ntfhp->ntfid_ino = ntp->i_number;
  639         /* ntfhp->ntfid_gen = ntp->i_gen; */
  640         return (0);
  641 }
  642 
  643 int
  644 ntfs_vgetex(
  645         struct mount *mp,
  646         ino_t ino,
  647         u_int32_t attrtype,
  648         char *attrname,
  649         u_long lkflags,
  650         u_long flags,
  651         struct thread *td,
  652         struct vnode **vpp) 
  653 {
  654         int error;
  655         register struct ntfsmount *ntmp;
  656         struct ntnode *ip;
  657         struct fnode *fp;
  658         struct vnode *vp;
  659         enum vtype f_type;
  660 
  661         dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
  662                 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
  663                 (u_long)flags));
  664 
  665         ntmp = VFSTONTFS(mp);
  666         *vpp = NULL;
  667 
  668         /* Get ntnode */
  669         error = ntfs_ntlookup(ntmp, ino, &ip);
  670         if (error) {
  671                 printf("ntfs_vget: ntfs_ntget failed\n");
  672                 return (error);
  673         }
  674 
  675         /* It may be not initialized fully, so force load it */
  676         if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
  677                 error = ntfs_loadntnode(ntmp, ip);
  678                 if(error) {
  679                         printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
  680                                ip->i_number);
  681                         ntfs_ntput(ip);
  682                         return (error);
  683                 }
  684         }
  685 
  686         error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
  687         if (error) {
  688                 printf("ntfs_vget: ntfs_fget failed\n");
  689                 ntfs_ntput(ip);
  690                 return (error);
  691         }
  692 
  693         f_type = VNON;
  694         if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
  695                 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
  696                     (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
  697                         f_type = VDIR;
  698                 } else if (flags & VG_EXT) {
  699                         f_type = VNON;
  700                         fp->f_size = fp->f_allocated = 0;
  701                 } else {
  702                         f_type = VREG;  
  703 
  704                         error = ntfs_filesize(ntmp, fp, 
  705                                               &fp->f_size, &fp->f_allocated);
  706                         if (error) {
  707                                 ntfs_ntput(ip);
  708                                 return (error);
  709                         }
  710                 }
  711 
  712                 fp->f_flag |= FN_VALID;
  713         }
  714 
  715         if (FTOV(fp)) {
  716                 vget(FTOV(fp), lkflags, td);
  717                 *vpp = FTOV(fp);
  718                 ntfs_ntput(ip);
  719                 return (0);
  720         }
  721 
  722         error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp);
  723         if(error) {
  724                 ntfs_frele(fp);
  725                 ntfs_ntput(ip);
  726                 return (error);
  727         }
  728         dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
  729 
  730         fp->f_vp = vp;
  731         vp->v_data = fp;
  732         vp->v_type = f_type;
  733 
  734         vp->v_bufobj.bo_ops = &ntfs_vnbufops;
  735         vp->v_bufobj.bo_private = vp;
  736 
  737         if (ino == NTFS_ROOTINO)
  738                 vp->v_vflag |= VV_ROOT;
  739 
  740         ntfs_ntput(ip);
  741 
  742         if (lkflags & LK_TYPE_MASK) {
  743                 error = vn_lock(vp, lkflags, td);
  744                 if (error) {
  745                         vput(vp);
  746                         return (error);
  747                 }
  748         }
  749 
  750         *vpp = vp;
  751         return (0);
  752         
  753 }
  754 
  755 static int
  756 ntfs_vget(
  757         struct mount *mp,
  758         ino_t ino,
  759         int lkflags,
  760         struct vnode **vpp) 
  761 {
  762         return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0,
  763             curthread, vpp);
  764 }
  765 
  766 static void
  767 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp)
  768 {
  769         struct vnode *vp;
  770         int rc;
  771 
  772         vp = bo->bo_private;
  773         KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p",
  774             vp, &vp->v_bufobj, bo));
  775         rc = VOP_STRATEGY(vp, bp);
  776         KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, "
  777                 "vp=%p, rc=%d", bp, vp, rc));
  778 }
  779 
  780 static struct vfsops ntfs_vfsops = {
  781         .vfs_fhtovp =   ntfs_fhtovp,
  782         .vfs_init =     ntfs_init,
  783         .vfs_cmount =   ntfs_cmount,
  784         .vfs_mount =    ntfs_mount,
  785         .vfs_root =     ntfs_root,
  786         .vfs_statfs =   ntfs_statfs,
  787         .vfs_uninit =   ntfs_uninit,
  788         .vfs_unmount =  ntfs_unmount,
  789         .vfs_vget =     ntfs_vget,
  790         .vfs_vptofh =   ntfs_vptofh,
  791 };
  792 VFS_SET(ntfs_vfsops, ntfs, 0);
  793 MODULE_VERSION(ntfs, 1);

Cache object: 09d205ba9f48c1a25baf0c5d1dd7aff4


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