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       checkmodule - SELinux policy module compiler


       checkmodule [-b] [-m] [-M] [-V] [-o output_file] [input_file]


       This manual page describes the checkmodule command.

       checkmodule  is  a  program that checks and compiles a SELinux security
       policy module into a binary representation.  It can generate  either  a
       base  policy  module (default) or a non-base policy module (-m option);
       typically, you would build a  non-base  policy  module  to  add  to  an
       existing  module  store  that already has a base module provided by the
       base policy.  Use semodule_package to  combine  this  module  with  its
       optional  file  contexts  to  create  a  policy  package,  and then use
       semodule to install the module package into the module store  and  load
       the resulting policy.


              Read  an existing binary policy module file rather than a source
              policy module file.  This option is a development/debugging aid.

       -m     Generate a non-base policy module.

              Enable  the  MLS/MCS  support  when  checking  and compiling the
              policy module.

               Show policy versions created by this program

       -o,--output filename
              Write a binary policy module file  to  the  specified  filename.
              Otherwise,  checkmodule will only check the syntax of the module
              source file and will not generate a binary module at all.

       -U,--handle-unknown <action>
              Specify  how  the  kernel  should  handle  unknown  classes   or
              permissions (deny, allow or reject).


       # Build a MLS/MCS-enabled non-base policy module.
       $ checkmodule -M -m httpd.te -o httpd.mod


       semodule(8),     semodule_package(8)     SELinux    documentation    at,   especially   "Configuring   the   SELinux


       This  manual  page  was copied from the checkpolicy man page written by
       Arpad Magosanyi <>,  and  edited  by  Dan  Walsh
       <>.   The  program  was  written  by  Stephen  Smalley