selinux-refpolicy/policy/modules/services/dkim.te

policy_module(dkim, 1.7.1)

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

milter_template(dkim)

type dkim_milter_initrc_exec_t;
init_script_file(dkim_milter_initrc_exec_t)

type dkim_milter_private_key_t;
files_security_file(dkim_milter_private_key_t)

type dkim_milter_unit_t;
init_unit_file(dkim_milter_unit_t)

init_daemon_runtime_file(dkim_milter_data_t, dir, "opendkim")

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

allow dkim_milter_t self:capability { dac_read_search dac_override setgid setuid };
allow dkim_milter_t self:process { signal signull };
allow dkim_milter_t self:unix_stream_socket create_stream_socket_perms;

read_files_pattern(dkim_milter_t, dkim_milter_private_key_t, dkim_milter_private_key_t)

# /proc/sys/kernel/ngroups_max
kernel_read_kernel_sysctls(dkim_milter_t)
kernel_read_vm_overcommit_sysctl(dkim_milter_t)

corenet_udp_bind_generic_node(dkim_milter_t)
corenet_udp_bind_all_unreserved_ports(dkim_milter_t)

dev_read_urand(dkim_milter_t)
# for cpu/online
dev_read_sysfs(dkim_milter_t)

files_runtime_filetrans(dkim_milter_t, dkim_milter_data_t, { dir file })
files_read_usr_files(dkim_milter_t)
files_search_spool(dkim_milter_t)

miscfiles_read_generic_certs(dkim_milter_t)

optional_policy(`
	mta_read_config(dkim_milter_t)
')

optional_policy(`
	# set up unix socket
	postfix_search_spool(dkim_milter_t)
')