static int
ntfs_unmount(struct mount *mp, int mntflags)
{
struct ntfsmount *ntmp;
int error, ronly, flags, i;
dprintf(("ntfs_unmount: unmounting...\n"));
ntmp = VFSTONTFS(mp);
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
flags = 0;
if(mntflags & MNT_FORCE)
flags |= FORCECLOSE;
dprintf(("ntfs_unmount: vflushing...\n"));
error = vflush(mp, 0, flags | SKIPSYSTEM);
if (error) {
kprintf("ntfs_unmount: vflush failed: %d\n",error);
return (error);
}
/* Check if only system vnodes are left */
for(i=0;i<NTFS_SYSNODESNUM;i++)
if((ntmp->ntm_sysvn[i]) &&
(VREFCNT(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
/* Dereference all system vnodes */
for(i=0;i<NTFS_SYSNODESNUM;i++)
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
/* vflush system vnodes */
error = vflush(mp, 0, flags);
if (error)
kprintf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
/* Check if the type of device node isn't VBAD before
* touching v_cdevinfo. If the device vnode is revoked, the
* field is NULL and touching it causes null pointer derefercence.
*/
if (ntmp->ntm_devvp->v_type != VBAD)
ntmp->ntm_devvp->v_rdev->si_mountpoint = NULL;
vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0);
error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, NULL);
vn_unlock(ntmp->ntm_devvp);
vrele(ntmp->ntm_devvp);
/* free the toupper table, if this has been last mounted ntfs volume */
ntfs_toupper_unuse();
dprintf(("ntfs_umount: freeing memory...\n"));
ntfs_u28_uninit(ntmp);
ntfs_82u_uninit(ntmp);
mp->mnt_data = (qaddr_t)0;
mp->mnt_flag &= ~MNT_LOCAL;
kfree(ntmp->ntm_ad, M_NTFSMNT);
kfree(ntmp, M_NTFSMNT);
return (error);
}
static int
ntfs_unmount(
struct mount *mp,
int mntflags)
{
struct lwp *l = curlwp;
struct ntfsmount *ntmp;
int error, ronly = 0, flags, i;
dprintf(("ntfs_unmount: unmounting...\n"));
ntmp = VFSTONTFS(mp);
flags = 0;
if(mntflags & MNT_FORCE)
flags |= FORCECLOSE;
dprintf(("ntfs_unmount: vflushing...\n"));
error = vflush(mp,NULLVP,flags | SKIPSYSTEM);
if (error) {
dprintf(("ntfs_unmount: vflush failed: %d\n",error));
return (error);
}
/* Check if only system vnodes are rest */
for(i=0;i<NTFS_SYSNODESNUM;i++)
if((ntmp->ntm_sysvn[i]) &&
(ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY);
/* Dereference all system vnodes */
for(i=0;i<NTFS_SYSNODESNUM;i++)
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
/* vflush system vnodes */
error = vflush(mp,NULLVP,flags);
if (error) {
panic("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
}
/* Check if the type of device node isn't VBAD before
* touching v_specinfo. If the device vnode is revoked, the
* field is NULL and touching it causes null pointer derefercence.
*/
if (ntmp->ntm_devvp->v_type != VBAD)
spec_node_setmountedfs(ntmp->ntm_devvp, NULL);
error = vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0);
KASSERT(error == 0);
/* lock the device vnode before calling VOP_CLOSE() */
vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE,
NOCRED);
KASSERT(error == 0);
VOP_UNLOCK(ntmp->ntm_devvp);
vrele(ntmp->ntm_devvp);
/* free the toupper table, if this has been last mounted ntfs volume */
ntfs_toupper_unuse();
dprintf(("ntfs_umount: freeing memory...\n"));
mp->mnt_data = NULL;
mp->mnt_flag &= ~MNT_LOCAL;
free(ntmp->ntm_ad, M_NTFSMNT);
free(ntmp, M_NTFSMNT);
return (0);
}
