NAME¶

stapserver_selinux - Security Enhanced Linux Policy for the stapserver processes

DESCRIPTION¶

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

The stapserver processes execute with the stapserver_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 stapserver_t

ENTRYPOINTS¶

The stapserver_t SELinux type can be entered via the stapserver_exec_t file type.

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

/usr/bin/stap-server

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 ps

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

The following process types are defined for stapserver:

stapserver_t

Note: semanage permissive -a stapserver_t can be used to make the process type stapserver_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. stapserver policy is extremely flexible and has several booleans that allow you to manipulate the policy and run stapserver with the tightest access possible.

If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn on the authlogin_nsswitch_use_ldap boolean. Disabled by default.

setsebool -P authlogin_nsswitch_use_ldap 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 confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.

setsebool -P kerberos_enabled 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

If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Enabled by default.

setsebool -P nscd_use_shm 1

MANAGED FILES¶

The SELinux process type stapserver_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

root_t

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

stapserver_log_t

/var/log/stap-server(/.*)?

stapserver_tmp_t

stapserver_tmpfs_t

stapserver_var_lib_t

/var/lib/stap-server(/.*)?

stapserver_var_run_t

/var/run/stap-server(/.*)?

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 ls

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

STANDARD FILE CONTEXT

SELinux defines the file context types for the stapserver, 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 stapserver_tmpfs_t '/srv/mystapserver_content(/.*)?'
restorecon -R -v /srv/mystapserver_content

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

The following file types are defined for stapserver:

stapserver_exec_t

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

stapserver_log_t

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

stapserver_tmp_t

- Set files with the stapserver_tmp_t type, if you want to store stapserver temporary files in the /tmp directories.

stapserver_tmpfs_t

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

stapserver_var_lib_t

- Set files with the stapserver_var_lib_t type, if you want to store the stapserver files under the /var/lib directory.

stapserver_var_run_t

- Set files with the stapserver_var_run_t type, if you want to store the stapserver 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.

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), stapserver(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)