selinux-policy/refpolicy/policy/modules/system/userdomain.te

policy_module(userdomain,1.0)

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

# admin users terminals (tty and pty)
attribute admin_terminal;

# users home directory
attribute home_dir_type;

# users home directory contents
attribute home_type;

# The privhome attribute identifies every domain that can create files under
# regular user home directories in the regular context (IE act on behalf of
# a user in writing regular files)
attribute privhome;

# all unprivileged users home directories
attribute user_home_dir_type;
attribute user_home_type;

# all unprivileged users ptys
attribute user_ptynode;

# all unprivileged users tmp files
attribute user_tmpfile;

# all unprivileged users ttys
attribute user_ttynode;

# all user domains
attribute userdomain;

# unprivileged user domains
attribute unpriv_userdomain;

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

define(`role_change',`
	allow $1_r $2_r;
	type_change $2_t $1_devpts_t:chr_file $2_devpts_t;
	type_change $2_t $1_tty_device_t:chr_file $2_tty_device_t;
	# avoid annoying messages on terminal hangup
	dontaudit $1_t { $2_devpts_t $2_tty_device_t }:chr_file ioctl;
')

ifdef(`targeted_policy',`
	# User home directory type.
	type user_home_t alias { staff_home_t sysadm_home_t }, home_type;
	files_type(user_home_t)

	type user_home_dir_t alias { staff_home_dir_t sysadm_home_dir_t }, home_dir_type;
	files_type(user_home_dir_t)

	unconfined_role(user_r)
	unconfined_role(sysadm_r)

	# dont need to use the full role_change()
	allow sysadm_r system_r;
	allow user_r system_r;
	allow user_r sysadm_r;
	allow system_r sysadm_r;
	allow system_r sysadm_r;

	ifdef(`TODO',`
	allow privhome home_root_t:dir { getattr search };
	file_type_auto_trans(privhome, user_home_dir_t, user_home_t)
	')
',`
	admin_user_template(sysadm)
	unpriv_user_template(staff)
	unpriv_user_template(user)

	# user role change rules:
	# sysadm_r can change to user roles
	role_change(sysadm, user)
	role_change(sysadm, staff)

	# only staff_r can change to sysadm_r
	role_change(staff, sysadm)

	# this should be tunable_policy, but
	# currently type_change and RBAC allow
	# do not work in conditionals
	ifdef(`user_canbe_sysadm',`
		role_change(user,sysadm)
	')

	ifdef(`TODO',`
	allow privhome home_root_t:dir { getattr search };
	')

	########################################
	#
	# Sysadm local policy
	#

	# for su
	allow sysadm_t userdomain:fd use;

	# Add/remove user home directories
	allow sysadm_t user_home_dir_t:dir create_dir_perms;
	files_create_home_dirs(sysadm_t,user_home_dir_t)

	ifdef(`direct_sysadm_daemon',`
		optional_policy(`init.te',`
			init_run_daemon(sysadm_t,sysadm_r,admin_terminal)
		')
	')

	optional_policy(`bootloader.te',`
		bootloader_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`clock.te',`
		clock_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`firstboot.te',`
		firstboot_run(sysadm_t,sysadm_r,sysadm_tty_device_t)
	')

	optional_policy(`fstools.te',`
		fstools_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`hostname.te',`
		hostname_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`ipsec.te',`
		# allow system administrator to use the ipsec script to look
		# at things (e.g., ipsec auto --status)
		# probably should create an ipsec_admin role for this kind of thing
		ipsec_exec_mgmt(sysadm_t)
		ipsec_stream_connect(sysadm_t)
		# for lsof
		ipsec_getattr_key_socket(sysadm_t)
	')

	optional_policy(`iptables.te',`
		iptables_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`libraries.te',`
		libs_run_ldconfig(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`lvm.te',`
		lvm_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`modutils.te',`
		modutils_run_depmod(sysadm_t,sysadm_r,admin_terminal)
		modutils_run_insmod(sysadm_t,sysadm_r,admin_terminal)
		modutils_run_update_mods(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`logrotate.te',`
		logrotate_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`mount.te',`
		mount_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`mysql.te',`
		mysql_stream_connect(sysadm_t)
	')

	optional_policy(`netutils.te',`
		netutils_run(sysadm_t,sysadm_r,admin_terminal)
		netutils_run_ping(sysadm_t,sysadm_r,admin_terminal)
		netutils_run_traceroute(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`pcmcia.te',`
		pcmcia_run_cardctl(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`quota.te',`
		quota_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`rpm.te',`
		rpm_run(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`selinuxutil.te',`
		seutil_run_checkpol(sysadm_t,sysadm_r,admin_terminal)
		seutil_run_loadpol(sysadm_t,sysadm_r,admin_terminal)
		seutil_run_restorecon(sysadm_t,sysadm_r,admin_terminal)
		seutil_run_setfiles(sysadm_t,sysadm_r,admin_terminal)
		optional_policy(`targeted_policy',`',`
			seutil_run_runinit(sysadm_t,sysadm_r,admin_terminal)
		')
	')

	optional_policy(`sysnetwork.te',`
		sysnet_run_ifconfig(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`unconfined.te',`
		unconfined_domtrans(sysadm_t,sysadm_r,admin_terminal)
	')

	optional_policy(`usermanage.te',`
		usermanage_run_groupadd(sysadm_t,sysadm_r,admin_terminal)
		usermanage_run_useradd(sysadm_t,sysadm_r,admin_terminal)
	')
')