Security-Enhanced Linux secures the pcscd processes via flexible mandatory access control.
The pcscd processes execute with the pcscd_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 pcscd_t
The pcscd_t SELinux type can be entered via the pcscd_exec_t file type.
The default entrypoint paths for the pcscd_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 pcscd policy is very flexible allowing users to setup their pcscd processes in as secure a method as possible.
The following process types are defined for pcscd:
pcscd_t
Note: semanage permissive -a pcscd_t can be used to make the process type pcscd_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
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
The SELinux process type pcscd_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
pcscd_var_run_t
/var/run/pcscd(/.*)?
/var/run/pcscd.events(/.*)?
/var/run/pcscd.pid
/var/run/pcscd.pub
/var/run/pcscd.comm
root_t
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
usbfs_t
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 pcscd policy is very flexible allowing users to setup their pcscd processes in as secure a method as possible.
EQUIVALENCE DIRECTORIES
pcscd policy stores data with multiple different file context types under the /var/run/pcscd directory. If you would like to store the data in a different directory you can use the semanage command to create an equivalence mapping. If you wanted to store this data under the /srv dirctory you would execute the following command:
semanage fcontext -a -e /var/run/pcscd /srv/pcscd
restorecon -R -v /srv/pcscd
STANDARD FILE CONTEXT
SELinux defines the file context types for the pcscd, 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 pcscd_var_run_t '/srv/mypcscd_content(/.*)?'
restorecon -R -v /srv/mypcscd_content
Note: SELinux often uses regular expressions to specify labels that match multiple files.
The following file types are defined for pcscd:
pcscd_exec_t
- Set files with the pcscd_exec_t type, if you want to transition an executable to the pcscd_t domain.
pcscd_initrc_exec_t
- Set files with the pcscd_initrc_exec_t type, if you want to transition an executable to the pcscd_initrc_t domain.
pcscd_var_run_t
- Set files with the pcscd_var_run_t type, if you want to store the pcscd 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.