policy_module(rngd, 1.1.0)

## <desc>
## <p>
## Allow rngd_t domain to use executable memory
## </p>
## </desc>
gen_tunable(rngd_execmem, false)

########################################
#
# Declarations
#

type rngd_t;
type rngd_exec_t;
init_daemon_domain(rngd_t, rngd_exec_t)

type rngd_initrc_exec_t;
init_script_file(rngd_initrc_exec_t)

type rngd_unit_file_t;
systemd_unit_file(rngd_unit_file_t)

type rngd_var_run_t;
files_pid_file(rngd_var_run_t)

########################################
#
# Local policy
#

allow rngd_t self:capability { ipc_lock setgid setuid sys_admin };
allow rngd_t self:process { setcap setsched signal };
allow rngd_t self:fifo_file rw_fifo_file_perms;
allow rngd_t self:netlink_kobject_uevent_socket create_socket_perms;
allow rngd_t self:unix_stream_socket { accept listen };

allow rngd_t rngd_var_run_t:file manage_file_perms;
files_pid_filetrans(rngd_t, rngd_var_run_t, file, "rngd.pid")

kernel_rw_kernel_sysctl(rngd_t)
kernel_read_system_state(rngd_t)

auth_use_nsswitch(rngd_t)

dev_read_rand(rngd_t)
dev_read_urand(rngd_t)
dev_rw_tpm(rngd_t)
dev_write_rand(rngd_t)
dev_read_sysfs(rngd_t)

logging_send_syslog_msg(rngd_t)

miscfiles_read_certs(rngd_t)

term_use_usb_ttys(rngd_t)

tunable_policy(`rngd_execmem',`
        allow rngd_t self:process { execmem };
')

optional_policy(`
	pcscd_stream_connect(rngd_t)
')

optional_policy(`
	udev_read_pid_files(rngd_t)
')