policy_module(modutils, 1.9.0)

gen_require(`
	bool secure_mode_insmod;
')

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

# module loading config
type modules_conf_t;
files_type(modules_conf_t)

# module dependencies
type modules_dep_t;
files_type(modules_dep_t)

type insmod_t;
type insmod_exec_t;
application_domain(insmod_t,insmod_exec_t)
mls_file_write_all_levels(insmod_t)
role system_r types insmod_t;

type depmod_t;
type depmod_exec_t;
init_system_domain(depmod_t,depmod_exec_t)
role system_r types depmod_t;

type update_modules_t;
type update_modules_exec_t;
init_system_domain(update_modules_t,update_modules_exec_t)
role system_r types update_modules_t;

type update_modules_tmp_t;
files_tmp_file(update_modules_tmp_t)

########################################
#
# insmod local policy
#

allow insmod_t self:capability { dac_override net_raw sys_tty_config };
allow insmod_t self:process { execmem sigchld sigkill sigstop signull signal };

allow insmod_t self:udp_socket create_socket_perms; 
allow insmod_t self:rawip_socket create_socket_perms; 

# Read module config and dependency information
allow insmod_t { modules_conf_t modules_dep_t }:file read_file_perms;

can_exec(insmod_t, insmod_exec_t)

kernel_load_module(insmod_t)
kernel_read_system_state(insmod_t)
kernel_write_proc_files(insmod_t)
kernel_mount_debugfs(insmod_t)
kernel_mount_kvmfs(insmod_t)
kernel_read_debugfs(insmod_t)
# Rules for /proc/sys/kernel/tainted
kernel_read_kernel_sysctls(insmod_t)
kernel_rw_kernel_sysctl(insmod_t)
kernel_read_hotplug_sysctls(insmod_t)

files_read_kernel_modules(insmod_t)
# for locking: (cjp: ????)
files_write_kernel_modules(insmod_t)

dev_rw_sysfs(insmod_t)
dev_search_usbfs(insmod_t)
dev_rw_mtrr(insmod_t)
dev_read_urand(insmod_t)
dev_rw_agp(insmod_t)
dev_read_sound(insmod_t)
dev_write_sound(insmod_t)
dev_rw_apm_bios(insmod_t)
# cjp: why is this needed?  insmod cannot mounton any dir
# and it also transitions to mount
dev_mount_usbfs(insmod_t)

fs_getattr_xattr_fs(insmod_t)

corecmd_exec_bin(insmod_t)
corecmd_exec_shell(insmod_t)

domain_signal_all_domains(insmod_t)
domain_use_interactive_fds(insmod_t)

files_read_etc_runtime_files(insmod_t)
files_read_etc_files(insmod_t)
files_read_usr_files(insmod_t)
files_exec_etc_files(insmod_t)
# for nscd:
files_dontaudit_search_pids(insmod_t)
# for when /var is not mounted early in the boot:
files_dontaudit_search_isid_type_dirs(insmod_t)

init_rw_initctl(insmod_t)
init_use_fds(insmod_t)
init_use_script_fds(insmod_t)
init_use_script_ptys(insmod_t)

logging_send_syslog_msg(insmod_t)
logging_search_logs(insmod_t)

miscfiles_read_localization(insmod_t)

seutil_read_file_contexts(insmod_t)

userdom_use_user_terminals(insmod_t)

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(insmod_t)
	')
')

if( ! secure_mode_insmod ) {
	kernel_domtrans_to(insmod_t,insmod_exec_t)
}

optional_policy(`
	hotplug_search_config(insmod_t)
')

optional_policy(`
	mount_domtrans(insmod_t)
')

optional_policy(`
	nis_use_ypbind(insmod_t)
')

optional_policy(`
	nscd_socket_use(insmod_t)
')

optional_policy(`
	fs_manage_ramfs_files(insmod_t)

	rhgb_use_fds(insmod_t)
	rhgb_dontaudit_use_ptys(insmod_t)

	xserver_dontaudit_write_log(insmod_t)
	xserver_stream_connect(insmod_t)
	xserver_dontaudit_rw_stream_sockets(insmod_t)

	ifdef(`hide_broken_symptoms',`
		xserver_dontaudit_rw_tcp_sockets(insmod_t)
	')
')

optional_policy(`
	rpm_rw_pipes(insmod_t)
')

optional_policy(`
	unconfined_dontaudit_rw_pipes(insmod_t)
')

optional_policy(`
	# cjp: why is this needed:
	dev_rw_xserver_misc(insmod_t)

	xserver_getattr_log(insmod_t)
')

########################################
#
# depmod local policy
#

can_exec(depmod_t, depmod_exec_t)

# Read conf.modules.
allow depmod_t modules_conf_t:file read_file_perms;

allow depmod_t modules_dep_t:file manage_file_perms;
files_kernel_modules_filetrans(depmod_t,modules_dep_t,file)

kernel_read_system_state(depmod_t)

files_read_kernel_symbol_table(depmod_t)
files_read_kernel_modules(depmod_t)

fs_getattr_xattr_fs(depmod_t)

term_use_console(depmod_t)

corecmd_search_bin(depmod_t)

domain_use_interactive_fds(depmod_t)

init_use_fds(depmod_t)
init_use_script_fds(depmod_t)
init_use_script_ptys(depmod_t)

files_read_etc_runtime_files(depmod_t)
files_read_etc_files(depmod_t)
files_read_usr_src_files(depmod_t)
files_list_usr(depmod_t)

userdom_use_user_terminals(depmod_t)
# Read System.map from home directories.
files_list_home(depmod_t)
userdom_read_user_home_content_files(depmod_t)

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(depmod_t)
	')
')

optional_policy(`
	rpm_rw_pipes(depmod_t)
')

#################################
#
# update-modules local policy
#

allow update_modules_t self:fifo_file rw_fifo_file_perms;

allow update_modules_t modules_dep_t:file rw_file_perms;

can_exec(update_modules_t, insmod_exec_t)
can_exec(update_modules_t, update_modules_exec_t)

# manage module loading configuration
allow update_modules_t modules_conf_t:file manage_file_perms;
files_kernel_modules_filetrans(update_modules_t,modules_conf_t,file)
files_etc_filetrans(update_modules_t,modules_conf_t,file)

# transition to depmod
domain_auto_trans(update_modules_t, depmod_exec_t, depmod_t)
allow update_modules_t depmod_t:fd use;
allow depmod_t update_modules_t:fd use;
allow depmod_t update_modules_t:fifo_file rw_file_perms;
allow depmod_t update_modules_t:process sigchld;

manage_dirs_pattern(update_modules_t,update_modules_tmp_t,update_modules_tmp_t)
manage_files_pattern(update_modules_t,update_modules_tmp_t,update_modules_tmp_t)
files_tmp_filetrans(update_modules_t, update_modules_tmp_t, { file dir })

kernel_read_kernel_sysctls(update_modules_t)
kernel_read_system_state(update_modules_t)

dev_read_urand(update_modules_t)

fs_getattr_xattr_fs(update_modules_t)

term_use_console(update_modules_t)

init_use_fds(update_modules_t)
init_use_script_fds(update_modules_t)
init_use_script_ptys(update_modules_t)

domain_use_interactive_fds(update_modules_t)

files_read_etc_runtime_files(update_modules_t)
files_read_etc_files(update_modules_t)
files_exec_etc_files(update_modules_t)

corecmd_exec_bin(update_modules_t)
corecmd_exec_shell(update_modules_t)

logging_send_syslog_msg(update_modules_t)

miscfiles_read_localization(update_modules_t)

userdom_use_user_terminals(update_modules_t)
userdom_dontaudit_search_user_home_dirs(update_modules_t)

ifdef(`distro_gentoo',`
	files_search_pids(update_modules_t)
	files_getattr_usr_src_files(update_modules_t)
	files_list_isid_type_dirs(update_modules_t) # /var

	optional_policy(`
		consoletype_exec(update_modules_t)
	')
')

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(update_modules_t)
	')
')