Security-Enhanced Linux secures the apm processes via flexible mandatory access control.
The apm processes execute with the apm_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.
For example:
ps -eZ | grep apm_t
The apm_t SELinux type can be entered via the apm_exec_t file type.
The default entrypoint paths for the apm_t domain are the following:
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux apm policy is very flexible allowing users to setup their apm processes in as secure a method as possible.
The following process types are defined for apm:
apmd_t, apm_t
Note: semanage permissive -a apm_t can be used to make the process type apm_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.
setsebool -P fips_mode 1
You can see the context of a file using the -Z option to lsP Policy governs the access confined processes have to these files. SELinux apm policy is very flexible allowing users to setup their apm processes in as secure a method as possible.
STANDARD FILE CONTEXT
SELinux defines the file context types for the apm, if you wanted to store files with these types in a diffent paths, you need to execute the semanage command to sepecify alternate labeling and then use restorecon to put the labels on disk.
semanage fcontext -a -t apmd_unit_file_t '/srv/myapm_content(/.*)?'
restorecon -R -v /srv/myapm_content
Note: SELinux often uses regular expressions to specify labels that match multiple files.
The following file types are defined for apm:
apm_exec_t
- Set files with the apm_exec_t type, if you want to transition an executable to the apm_t domain.
apmd_exec_t
- Set files with the apmd_exec_t type, if you want to transition an executable to the apmd_t domain.
apmd_initrc_exec_t
- Set files with the apmd_initrc_exec_t type, if you want to transition an executable to the apmd_initrc_t domain.
apmd_lock_t
- Set files with the apmd_lock_t type, if you want to treat the files as apmd lock data, stored under the /var/lock directory
apmd_log_t
- Set files with the apmd_log_t type, if you want to treat the data as apmd log data, usually stored under the /var/log directory.
apmd_tmp_t
- Set files with the apmd_tmp_t type, if you want to store apmd temporary files in the /tmp directories.
apmd_unit_file_t
- Set files with the apmd_unit_file_t type, if you want to treat the files as apmd unit content.
apmd_var_lib_t
- Set files with the apmd_var_lib_t type, if you want to store the apmd files under the /var/lib directory.
apmd_var_run_t
- Set files with the apmd_var_run_t type, if you want to store the apmd files under the /run or /var/run directory.
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 semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.
semanage permissive can also be used to manipulate whether or not a process type is permissive.
semanage module can also be used to enable/disable/install/remove policy modules.
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux policy settings.