Comment 2 for bug 78375

For the record, here is a like to the ntfs-3g manual :
http://www.die.net/doc/linux/man/man8/ntfs-3g.8.html
and to the ntfsmount manual :
http://man.linux-ntfs.org/ntfsmount.8.html

After some test more test, it appears that uid change is not allowed for non root user, even with removable device. This is only allowed for vfat, iso9660 and udf :

hal-0.5.8.1/tools/hal-storage-mount.c : line 724
" /* don't consider uid= on vfat, iso9660, udf change-uid for the purpose of policy
   * (since these doesn't contain uid/gid bits)
   */
  if (strcmp (libhal_volume_get_fstype (volume), "vfat") != 0 &&
      strcmp (libhal_volume_get_fstype (volume), "iso9660") != 0 &&
      strcmp (libhal_volume_get_fstype (volume), "udf") != 0) {
   pol_change_uid = wants_to_change_uid;"

if we want to use uid= for ntfs-fuse and/or ntfs-3g we should add ntfs to that list. That make sense since ntfs don't contain uid/gid bits.

An other possibility could be to mount them with umask=0 and without uid=.