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checkmodule \- SELinux policy module compiler
.B checkmodule
.I "[\-h] [\-b] [\-c policy_version] [\-C] [\-E] [\-m] [\-M] [\-U handle_unknown] [\-V] [\-o output_file] [input_file]"
This manual page describes the
.BR checkmodule
.B 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
.B semodule_package(8)
to combine this module with its optional file
contexts to create a policy package, and then use
.B semodule(8)
to install the module package into the module store and load the resulting
.B \-b,\-\-binary
Read an existing binary policy module file rather than a source policy
module file. This option is a development/debugging aid.
.B \-C,\-\-cil
Write CIL policy file rather than binary policy file.
.B \-E,\-\-werror
Treat warnings as errors
.B \-h,\-\-help
Print usage.
.B \-m
Generate a non-base policy module.
.B \-M,\-\-mls
Enable the MLS/MCS support when checking and compiling the policy module.
.B \-V,\-\-version
Show policy versions created by this program.
.B \-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.
.B \-U,\-\-handle-unknown <action>
Specify how the kernel should handle unknown classes or permissions (deny, allow or reject).
.B \-c policyvers
Specify the policy version, defaults to the latest.
# Build a MLS/MCS-enabled non-base policy module.
$ checkmodule \-M \-m httpd.te \-o httpd.mod
.B semodule(8), semodule_package(8)
SELinux Reference Policy documentation at
This manual page was copied from the checkpolicy man page
written by Árpád Magosányi <>,
and edited by Dan Walsh <>.
The program was written by Stephen Smalley <>.