clamd_selinux(8) SELinux Policy documentation for clamd clamd_selinux(8)

NAME clamd_selinux - Security Enhanced Linux Policy for the clamd processes

DESCRIPTION Security-Enhanced Linux secures the clamd processes via flexible manda- tory access control.

The clamd processes execute with the clamd_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 clamd_t

ENTRYPOINTS The clamd_t SELinux type can be entered via the "clamd_exec_t" file type. The default entrypoint paths for the clamd_t domain are the fol- lowing:"

/usr/sbin/clamd, /usr/sbin/clamav-milter

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 clamd policy is very flexible allowing users to setup their clamd pro- cesses in as secure a method as possible.

The following process types are defined for clamd:

clamd_t, clamscan_t

Note: semanage permissive -a clamd_t

can be used to make the process type clamd_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

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

If you want to allow clamd to use JIT compiler, you must turn on the clamd_use_jit boolean.

setsebool -P clamd_use_jit 1

If you want to allow clamscan to non security files on a system, you must turn on the clamscan_can_scan_system boolean.

setsebool -P clamscan_can_scan_system 1

If you want to allow clamd to use JIT compiler, you must turn on the clamd_use_jit boolean.

setsebool -P clamd_use_jit 1

If you want to allow clamscan to non security files on a system, you must turn on the clamscan_can_scan_system boolean.

setsebool -P clamscan_can_scan_system 1

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

The following file types are defined for clamd:

clamd_etc_t

- Set files with the clamd_etc_t type, if you want to store clamd files in the /etc directories.

clamd_exec_t

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

clamd_initrc_exec_t

- Set files with the clamd_initrc_exec_t type, if you want to transi- tion an executable to the clamd_initrc_t domain.

clamd_tmp_t

- Set files with the clamd_tmp_t type, if you want to store clamd tem- porary files in the /tmp directories.

clamd_var_lib_t

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

clamd_var_log_t

- Set files with the clamd_var_log_t type, if you want to treat the data as clamd var log data, usually stored under the /var/log direc- tory.

clamd_var_run_t

- Set files with the clamd_var_run_t type, if you want to store the clamd files under the /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.

PORT TYPES SELinux defines port types to represent TCP and UDP ports.

You can see the types associated with a port by using the following command:

semanage port -l

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

The following port types are defined for clamd:

clamd_port_t

Default Defined Ports: tcp 3310

MANAGED FILES The SELinux process type clamd_t can manage files labeled with the fol- lowing file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.

amavis_var_run_t

/var/run/amavis(d)?(/.*)?

antivirus_db_t

/var/opt/f-secure(/.*)?

clamd_tmp_t

clamd_var_lib_t

/var/clamav(/.*)? /var/lib/clamd.* /var/lib/clamav(/.*)?

clamd_var_log_t

/var/log/clamd.* /var/log/clamav.*

clamd_var_run_t

/var/run/clamd.* /var/run/clamav.* /var/run/amavis(d)?/clamd.pid /var/spool/MailScanner(/.*)? /var/spool/amavisd/clamd.sock

initrc_tmp_t

mnt_t

/mnt(/[^/]*) /mnt(/[^/]*)? /rhev(/[^/]*)? /media(/[^/]*) /media(/[^/]*)? /etc/rhgb(/.*)? /media/.hal-.* /net /afs /misc /rhev

root_t

/ /initrd

tmp_t

/tmp /usr/tmp /var/tmp /var/tmp/vi.recover

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 pol- icy modules.

semanage port can also be used to manipulate the port definitions

semanage boolean can also be used to manipulate the booleans

system-config-selinux is a GUI tool available to customize SELinux pol- icy settings.

AUTHOR This manual page was auto-generated using sepolicy manpage by mgrepl.

SEE ALSO selinux(8), clamd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8), clamscan_selinux(8)

clamd 13-01-04 clamd_selinux(8)