.TH CHECKMODULE 8
.SH NAME
checkmodule \- SELinux policy module compiler
.SH SYNOPSIS
.B checkmodule
.I "[\-h] [\-b] [\-c policy_version] [\-C] [\-E] [\-m] [\-M] [\-N] [\-L] [\-U handle_unknown] [\-V] [\-o output_file] [input_file]"
.SH "DESCRIPTION"
This manual page describes the
.BR checkmodule
command.
.PP
.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
policy.

.SH OPTIONS
.TP
.B \-b,\-\-binary
Read an existing binary policy module file rather than a source policy
module file.  This option is a development/debugging aid.
.TP
.B \-C,\-\-cil
Write CIL policy file rather than binary policy file.
.TP
.B \-E,\-\-werror
Treat warnings as errors
.TP
.B \-h,\-\-help
Print usage.
.TP
.B \-m
Generate a non-base policy module.
.TP
.B \-M,\-\-mls
Enable the MLS/MCS support when checking and compiling the policy module.
.TP
.B \-N,\-\-disable-neverallow
Do not check neverallow rules.
.TP
.B \-L,\-\-line-marker-for-allow
Output line markers for allow rules, in addition to neverallow rules. This option increases the size
of the output CIL policy file, but the additional line markers helps debugging, especially
neverallow failure reports. Can only be used when writing a CIL policy file.
.TP
.B \-V,\-\-version
Show policy versions created by this program.
.TP
.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.
.TP
.B \-U,\-\-handle-unknown <action>
Specify how the kernel should handle unknown classes or permissions (deny, allow or reject).
.TP
.B \-c policyvers
Specify the policy version, defaults to the latest.

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

.SH "SEE ALSO"
.B semodule(8), semodule_package(8)
SELinux Reference Policy documentation at https://github.com/SELinuxProject/refpolicy/wiki


.SH AUTHOR
This manual page was copied from the checkpolicy man page 
written by Árpád Magosányi <mag@bunuel.tii.matav.hu>,
and edited by Dan Walsh <dwalsh@redhat.com>.