apmd_selinux - Man Page

Security-Enhanced Linux secures the apmd processes via flexible mandatory access control.

The apmd processes execute with the apmd_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 apmd_t

The apmd_t SELinux type can be entered via the apmd_exec_t file type.

The default entrypoint paths for the apmd_t domain are the following:

/usr/bin/apmd, /usr/bin/acpid, /usr/bin/powersaved

SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to psbP

Policy governs the access confined processes have to files. SELinux apmd policy is very flexible allowing users to setup their apmd processes in as secure a method as possible.

The following process types are defined for apmd:

apmd_t, apm_t

Note: semanage permissive -a apmd_t can be used to make the process type apmd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

SELinux policy is customizable based on least access required.  apmd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run apmd with the tightest access possible.

If you want to dontaudit all daemons scheduling requests (setsched, sys_nice), you must turn on the daemons_dontaudit_scheduling boolean. Enabled by default.

setsebool -P daemons_dontaudit_scheduling 1

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

If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

setsebool -P nis_enabled 1

The SELinux process type apmd_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.

adjtime_t

/etc/adjtime

apmd_lock_t

/run/lock/lmt-req.lock
/run/lock/subsys/acpid
/run/lock/subsys/lmt-req.lock

apmd_log_t

/var/log/acpid.*

apmd_tmp_t

apmd_var_lib_t

/var/lib/acpi(/.*)?

apmd_var_run_t

/run/.?acpid.socket
/run/apmd.pid
/run/acpid.pid
/run/powersaved.pid
/run/powersave_socket

cluster_conf_t

/etc/cluster(/.*)?

cluster_var_lib_t

/var/lib/pcsd(/.*)?
/var/lib/cluster(/.*)?
/var/lib/openais(/.*)?
/var/lib/pengine(/.*)?
/var/lib/corosync(/.*)?
/usr/lib/heartbeat(/.*)?
/var/lib/heartbeat(/.*)?
/var/lib/pacemaker(/.*)?

cluster_var_run_t

/run/crm(/.*)?
/run/cman_.*
/run/rsctmp(/.*)?
/run/aisexec.*
/run/heartbeat(/.*)?
/run/pcsd-ruby.socket
/run/corosync-qnetd(/.*)?
/run/corosync-qdevice(/.*)?
/run/pcsd.socket
/run/corosync.pid
/run/cpglockd.pid
/run/rgmanager.pid
/run/cluster/rgmanager.sk

devicekit_var_log_t

/var/log/pm-suspend.log.*
/var/log/pm-powersave.log.*

devicekit_var_run_t

/run/udisks.*
/run/devkit(/.*)?
/run/upower(/.*)?
/run/pm-utils(/.*)?
/run/DeviceKit-disks(/.*)?

krb5_host_rcache_t

/var/tmp/krb5_0.rcache2
/var/cache/krb5rcache(/.*)?
/var/tmp/nfs_0
/var/tmp/DNS_25
/var/tmp/host_0
/var/tmp/imap_0
/var/tmp/HTTP_23
/var/tmp/HTTP_48
/var/tmp/ldap_55
/var/tmp/ldap_487
/var/tmp/ldapmap1_0

root_t

/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd

sysctl_type

sysfs_t

/sys(/.*)?

systemd_passwd_var_run_t

/run/systemd/ask-password(/.*)?
/run/systemd/ask-password-block(/.*)?

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to lsbP

Policy governs the access confined processes have to these files. SELinux apmd policy is very flexible allowing users to setup their apmd processes in as secure a method as possible.

STANDARD FILE CONTEXT

SELinux defines the file context types for the apmd, if you wanted to store files with these types in a different paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk.

semanage fcontext -a -t apmd_exec_t '/srv/apmd/content(/.*)?'
restorecon -R -v /srv/myapmd_content

Note: SELinux often uses regular expressions to specify labels that match multiple files.

The following file types are defined for apmd:

apmd_exec_t

- Set files with the apmd_exec_t type, if you want to transition an executable to the apmd_t domain.

Paths:

/usr/bin/apmd, /usr/bin/acpid, /usr/bin/powersaved

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

Paths:

/run/lock/lmt-req.lock, /run/lock/subsys/acpid, /run/lock/subsys/lmt-req.lock

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.

Paths:

/run/.?acpid.socket, /run/apmd.pid, /run/acpid.pid, /run/powersaved.pid, /run/powersave_socket

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 fcontext can also be used to manipulate default file context mappings.

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.

This manual page was auto-generated using sepolicy manpage .

selinux(8), apmd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)