Cl_gui_frontend_services: possible to change the user for writing files?

Hi,
I'm using the class cl_gui_frontend_services to allow the user to copy a file to a specified network drive (using the method file_copy). The user can open the file again, if he double clicks on a row in a ALV table. So far so good, this works already.
But one requirement for this solution is, that the user can not access the directory where the copied files are stored directly.
Now I'm wondering if it is possible to use a specified system user for copying the files? My idea is to switch to the system user just for the method file_copy. I didn't find a method for doing this yet but maybe somebody knows if this is possible.
Thanks and regards,
Martin

Hi ,
Regarding to your last question; You can get the file list of a specified directory while using OPEN DATASET related commands. After the list populated you make the user select it with the help of a popup screen.
Gets the list of a specified directory's content
CALL FUNCTION 'EPS_GET_DIRECTORY_LISTING'
    EXPORTING
      dir_name               = gv_drctry
    TABLES
      dir_list               = lt_dirlist
    EXCEPTIONS
      invalid_eps_subdir     = 1
      sapgparam_failed       = 2
      build_directory_failed = 3
      no_authorization       = 4
      read_directory_failed = 5
      too_many_read_errors   = 6
      empty_directory_list   = 7
      OTHERS                 = 8.
Hope it's useful...

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