mdadm_selinux.8 - Online Linux Manual Page

mdadm_selinux - Online Linux Manual PageSection : 8
Updated : 21-04-01
Source : mdadm
Note : SELinux Policy mdadm

NAMEmdadm_selinux − Security Enhanced Linux Policy for the mdadm processes

DESCRIPTIONSecurity-Enhanced Linux secures the mdadm processes via flexible mandatory access control. The mdadm processes execute with the mdadm_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 mdadm_t

ENTRYPOINTSThe mdadm_t SELinux type can be entered via the mdadm_exec_t file type. The default entrypoint paths for the mdadm_t domain are the following: /sbin/mdadm, /sbin/mdmon, /sbin/mdmpd, /sbin/iprdump, /sbin/iprinit, /sbin/iprupdate, /usr/sbin/mdadm, /usr/sbin/mdmon, /usr/sbin/mdmpd, /sbin/raid-check, /usr/sbin/iprdump, /usr/sbin/iprinit, /usr/sbin/iprupdate, /usr/sbin/raid-check

PROCESS TYPESSELinux defines process types (domains) for each process running on the system You can see the context of a process using the −Z option to ps Policy governs the access confined processes have to files. SELinux mdadm policy is very flexible allowing users to setup their mdadm processes in as secure a method as possible. The following process types are defined for mdadm: mdadm_tNote: semanage permissive -a mdadm_t can be used to make the process type mdadm_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

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

MANAGED FILESThe SELinux process type mdadm_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.
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 /var/run/crm(/.*)?
/var/run/cman_.*
/var/run/rsctmp(/.*)?
/var/run/aisexec.*
/var/run/heartbeat(/.*)?
/var/run/pcsd-ruby.socket
/var/run/corosync-qnetd(/.*)?
/var/run/corosync-qdevice(/.*)?
/var/run/corosync.pid
/var/run/cpglockd.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk

kdump_lock_t /var/lock/kdump(/.*)?

mdadm_conf_t /etc/mdadm.conf
/etc/mdadm.conf.anacbak

mdadm_log_t /var/log/iprdump.*
/var/log/iprdbg

mdadm_tmpfs_t
mdadm_var_run_t /dev/md/.*
/var/run/mdadm(/.*)?
/dev/.mdadm.map

root_t /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd

sysfs_t /sys(/.*)?

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

FILE CONTEXTSSELinux 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 ls Policy governs the access confined processes have to these files. SELinux mdadm policy is very flexible allowing users to setup their mdadm processes in as secure a method as possible. STANDARD FILE CONTEXT SELinux defines the file context types for the mdadm, 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 mdadm_log_t '/srv/mymdadm_content(/.*)?'
restorecon -R -v /srv/mymdadm_content Note: SELinux often uses regular expressions to specify labels that match multiple files. The following file types are defined for mdadm: mdadm_conf_t- Set files with the mdadm_conf_t type, if you want to treat the files as mdadm configuration data, usually stored under the /etc directory.
Paths: /etc/mdadm.conf, /etc/mdadm.conf.anacbak mdadm_exec_t- Set files with the mdadm_exec_t type, if you want to transition an executable to the mdadm_t domain.
Paths: /sbin/mdadm, /sbin/mdmon, /sbin/mdmpd, /sbin/iprdump, /sbin/iprinit, /sbin/iprupdate, /usr/sbin/mdadm, /usr/sbin/mdmon, /usr/sbin/mdmpd, /sbin/raid-check, /usr/sbin/iprdump, /usr/sbin/iprinit, /usr/sbin/iprupdate, /usr/sbin/raid-check mdadm_initrc_exec_t- Set files with the mdadm_initrc_exec_t type, if you want to transition an executable to the mdadm_initrc_t domain. mdadm_log_t- Set files with the mdadm_log_t type, if you want to treat the data as mdadm log data, usually stored under the /var/log directory.
Paths: /var/log/iprdump.*, /var/log/iprdbg mdadm_tmp_t- Set files with the mdadm_tmp_t type, if you want to store mdadm temporary files in the /tmp directories. mdadm_tmpfs_t- Set files with the mdadm_tmpfs_t type, if you want to store mdadm files on a tmpfs file system. mdadm_unit_file_t- Set files with the mdadm_unit_file_t type, if you want to treat the files as mdadm unit content.
Paths: /usr/lib/systemd/system/mdmon@.*, /usr/lib/systemd/system/mdmonitor.* mdadm_var_run_t- Set files with the mdadm_var_run_t type, if you want to store the mdadm files under the /run or /var/run directory.
Paths: /dev/md/.*, /var/run/mdadm(/.*)?, /dev/.mdadm.map 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.

COMMANDSsemanage 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.

AUTHORThis manual page was auto-generated using sepolicy manpage".

Johanes Gumabo

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