ibacm_selinux - Man Page

Security Enhanced Linux Policy for the ibacm processes

Description

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

The ibacm processes execute with the ibacm_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 ibacm_t

Entrypoints

The ibacm_t SELinux type can be entered via the ibacm_exec_t file type.

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

/usr/sbin/ibacm

Process Types

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 ibacm policy is very flexible allowing users to setup their ibacm processes in as secure a method as possible.

The following process types are defined for ibacm:

ibacm_t

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

Booleans

SELinux policy is customizable based on least access required.  ibacm policy is extremely flexible and has several booleans that allow you to manipulate the policy and run ibacm 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 Files

The SELinux process type ibacm_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/corosync-qnetd(/.*)?
/var/run/corosync-qdevice(/.*)?
/var/run/corosync.pid
/var/run/cpglockd.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk

ibacm_conf_t

/etc/rdma/ibacm_addr.cfg

ibacm_log_t

/var/log/ibacm.*

ibacm_tmpfs_t

ibacm_var_run_t

/var/run/ibacm.*
/var/run/ibacm.*
/var/run/ibacm-unix.*

root_t

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

File Contexts

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 ibacm policy is very flexible allowing users to setup their ibacm processes in as secure a method as possible.

STANDARD FILE CONTEXT

SELinux defines the file context types for the ibacm, 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 ibacm_tmpfs_t '/srv/myibacm_content(/.*)?'
restorecon -R -v /srv/myibacm_content

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

The following file types are defined for ibacm:

ibacm_conf_t

- Set files with the ibacm_conf_t type, if you want to treat the files as ibacm configuration data, usually stored under the /etc directory.

ibacm_exec_t

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

ibacm_log_t

- Set files with the ibacm_log_t type, if you want to treat the data as ibacm log data, usually stored under the /var/log directory.

ibacm_tmpfs_t

- Set files with the ibacm_tmpfs_t type, if you want to store ibacm files on a tmpfs file system.

ibacm_var_run_t

- Set files with the ibacm_var_run_t type, if you want to store the ibacm files under the /run or /var/run directory.

Paths:

/var/run/ibacm.*, /var/run/ibacm.*, /var/run/ibacm-unix.*

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.

Commands

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.

Author

This manual page was auto-generated using sepolicy manpage .

See Also

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

Info

20-09-18 SELinux Policy ibacm