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<h1 align="center">dmesg_selinux</h1>
<a href="#NAME">NAME</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#ENTRYPOINTS">ENTRYPOINTS</a><br>
<a href="#PROCESS TYPES">PROCESS TYPES</a><br>
<a href="#BOOLEANS">BOOLEANS</a><br>
<a href="#MANAGED FILES">MANAGED FILES</a><br>
<a href="#FILE CONTEXTS">FILE CONTEXTS</a><br>
<a href="#COMMANDS">COMMANDS</a><br>
<a href="#AUTHOR">AUTHOR</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
<h2>NAME
<a name="NAME"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">dmesg_selinux
− Security Enhanced Linux Policy for the dmesg
processes</p>
<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">Security-Enhanced
Linux secures the dmesg processes via flexible mandatory
access control.</p>
<p style="margin-left:11%; margin-top: 1em">The dmesg
processes execute with the dmesg_t SELinux type. You can
check if you have these processes running by executing the
<b>ps</b> command with the <b>−Z</b> qualifier.</p>
<p style="margin-left:11%; margin-top: 1em">For
example:</p>
<p style="margin-left:11%; margin-top: 1em"><b>ps -eZ |
grep dmesg_t</b></p>
<h2>ENTRYPOINTS
<a name="ENTRYPOINTS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">The dmesg_t
SELinux type can be entered via the <b>dmesg_exec_t</b> file
type.</p>
<p style="margin-left:11%; margin-top: 1em">The default
entrypoint paths for the dmesg_t domain are the
following:</p>
<p style="margin-left:11%; margin-top: 1em">/bin/dmesg,
/usr/bin/dmesg</p>
<h2>PROCESS TYPES
<a name="PROCESS TYPES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">SELinux defines
process types (domains) for each process running on the
system</p>
<p style="margin-left:11%; margin-top: 1em">You can see the
context of a process using the <b>−Z</b> option to
<b>ps</b></p>
<p style="margin-left:11%; margin-top: 1em">Policy governs
the access confined processes have to files. SELinux dmesg
policy is very flexible allowing users to setup their dmesg
processes in as secure a method as possible.</p>
<p style="margin-left:11%; margin-top: 1em">The following
process types are defined for dmesg:</p>
<p style="margin-left:11%; margin-top: 1em"><b>dmesg_t</b></p>
<p style="margin-left:11%; margin-top: 1em">Note:
<b>semanage permissive -a dmesg_t</b> can be used to make
the process type dmesg_t permissive. SELinux does not deny
access to permissive process types, but the AVC (SELinux
denials) messages are still generated.</p>
<h2>BOOLEANS
<a name="BOOLEANS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">SELinux policy
is customizable based on least access required. dmesg policy
is extremely flexible and has several booleans that allow
you to manipulate the policy and run dmesg with the tightest
access possible.</p>
<p style="margin-left:11%; margin-top: 1em">If you want to
allow all domains to execute in fips_mode, you must turn on
the fips_mode boolean. Enabled by default.</p>
<p style="margin-left:11%; margin-top: 1em"><b>setsebool -P
fips_mode 1</b></p>
<h2>MANAGED FILES
<a name="MANAGED FILES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">The SELinux
process type dmesg_t can manage files labeled with the
following file types. The paths listed are the default paths
for these file types. Note the processes UID still need to
have DAC permissions.</p>
<p style="margin-left:11%; margin-top: 1em"><b>var_log_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/var/log/.*
<br>
/nsr/logs(/.*)? <br>
/var/webmin(/.*)? <br>
/var/log/secure[^/]* <br>
/opt/zimbra/log(/.*)? <br>
/var/log/maillog[^/]* <br>
/var/log/spooler[^/]* <br>
/var/log/messages[^/]* <br>
/usr/centreon/log(/.*)? <br>
/var/spool/rsyslog(/.*)? <br>
/var/axfrdns/log/main(/.*)? <br>
/var/spool/bacula/log(/.*)? <br>
/var/tinydns/log/main(/.*)? <br>
/var/dnscache/log/main(/.*)? <br>
/var/stockmaniac/templates_cache(/.*)? <br>
/opt/Symantec/scspagent/IDS/system(/.*)? <br>
/var/log <br>
/var/log/dmesg <br>
/var/log/syslog <br>
/var/named/chroot/var/log</p>
<h2>FILE CONTEXTS
<a name="FILE CONTEXTS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">SELinux
requires files to have an extended attribute to define the
file type.</p>
<p style="margin-left:11%; margin-top: 1em">You can see the
context of a file using the <b>−Z</b> option to
<b>ls</b></p>
<p style="margin-left:11%; margin-top: 1em">Policy governs
the access confined processes have to these files. SELinux
dmesg policy is very flexible allowing users to setup their
dmesg processes in as secure a method as possible.</p>
<p style="margin-left:11%; margin-top: 1em"><i>The
following file types are defined for dmesg:</i></p>
<p style="margin-left:11%; margin-top: 1em"><b>dmesg_exec_t</b></p>
<p style="margin-left:11%; margin-top: 1em">- Set files
with the dmesg_exec_t type, if you want to transition an
executable to the dmesg_t domain. <br>
Paths:</p>
<p style="margin-left:18%;">/bin/dmesg, /usr/bin/dmesg</p>
<p style="margin-left:11%; margin-top: 1em">Note: File
context can be temporarily modified with the chcon command.
If you want to permanently change the file context you need
to use the <b>semanage fcontext</b> command. This will
modify the SELinux labeling database. You will need to use
<b>restorecon</b> to apply the labels.</p>
<h2>COMMANDS
<a name="COMMANDS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
fcontext</b> can also be used to manipulate default file
context mappings.</p>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
permissive</b> can also be used to manipulate whether or not
a process type is permissive.</p>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
module</b> can also be used to enable/disable/install/remove
policy modules.</p>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
boolean</b> can also be used to manipulate the booleans</p>
<p style="margin-left:11%; margin-top: 1em"><b>system-config-selinux</b>
is a GUI tool available to customize SELinux policy
settings.</p>
<h2>AUTHOR
<a name="AUTHOR"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">This manual
page was auto-generated using <b>sepolicy manpage .</b></p>
<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">selinux(8),
dmesg(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
setsebool(8)</p>
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