policy_module(prelink, 1.8.1)

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

attribute prelink_object;

type prelink_t;
type prelink_exec_t;
init_system_domain(prelink_t, prelink_exec_t)
domain_obj_id_change_exemption(prelink_t)

type prelink_cache_t;
files_type(prelink_cache_t)

type prelink_cron_system_t;
type prelink_cron_system_exec_t;
domain_type(prelink_cron_system_t)
domain_entry_file(prelink_cron_system_t, prelink_cron_system_exec_t)

type prelink_log_t;
logging_log_file(prelink_log_t)

type prelink_tmp_t;
files_tmp_file(prelink_tmp_t)

type prelink_tmpfs_t;
files_tmpfs_file(prelink_tmpfs_t)

type prelink_var_lib_t;
files_type(prelink_var_lib_t)

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

allow prelink_t self:capability { chown dac_override fowner fsetid sys_resource };
allow prelink_t self:process { execheap execmem execstack signal };
allow prelink_t self:fifo_file rw_fifo_file_perms;

allow prelink_t prelink_cache_t:file manage_file_perms;
files_etc_filetrans(prelink_t, prelink_cache_t, file)

allow prelink_t prelink_log_t:dir setattr;
create_files_pattern(prelink_t, prelink_log_t, prelink_log_t)
append_files_pattern(prelink_t, prelink_log_t, prelink_log_t)
read_lnk_files_pattern(prelink_t, prelink_log_t, prelink_log_t)
logging_log_filetrans(prelink_t, prelink_log_t, file)

allow prelink_t prelink_tmp_t:file { manage_file_perms execute relabelfrom execmod };
files_tmp_filetrans(prelink_t, prelink_tmp_t, file)

allow prelink_t prelink_tmpfs_t:file { manage_file_perms execute relabelfrom execmod };
fs_tmpfs_filetrans(prelink_t, prelink_tmpfs_t, file)

manage_dirs_pattern(prelink_t, prelink_var_lib_t, prelink_var_lib_t)
manage_files_pattern(prelink_t, prelink_var_lib_t, prelink_var_lib_t)
relabel_files_pattern(prelink_t, prelink_var_lib_t, prelink_var_lib_t)
files_var_lib_filetrans(prelink_t, prelink_var_lib_t, { dir file })

# prelink misc objects that are not system
# libraries or entrypoints
allow prelink_t prelink_object:file { manage_file_perms execute relabelto relabelfrom };

kernel_read_system_state(prelink_t)
kernel_read_kernel_sysctls(prelink_t)

corecmd_manage_all_executables(prelink_t)
corecmd_relabel_all_executables(prelink_t)
corecmd_mmap_all_executables(prelink_t)
corecmd_read_bin_symlinks(prelink_t)

dev_read_urand(prelink_t)

files_list_all(prelink_t)
files_getattr_all_files(prelink_t)
files_write_non_security_dirs(prelink_t)
files_read_etc_files(prelink_t)
files_read_etc_runtime_files(prelink_t)
files_dontaudit_read_all_symlinks(prelink_t)
files_manage_usr_files(prelink_t)
files_manage_var_files(prelink_t)
files_relabelfrom_usr_files(prelink_t)

fs_getattr_xattr_fs(prelink_t)

selinux_get_enforce_mode(prelink_t)

libs_exec_ld_so(prelink_t)
libs_legacy_use_shared_libs(prelink_t)
libs_manage_ld_so(prelink_t)
libs_relabel_ld_so(prelink_t)
libs_manage_shared_libs(prelink_t)
libs_relabel_shared_libs(prelink_t)
libs_delete_lib_symlinks(prelink_t)

miscfiles_read_localization(prelink_t)

userdom_use_user_terminals(prelink_t)

optional_policy(`
	amanda_manage_lib(prelink_t)
')

optional_policy(`
	cron_system_entry(prelink_t, prelink_exec_t)
')

optional_policy(`
	rpm_manage_tmp_files(prelink_t)
')

optional_policy(`
	unconfined_domain(prelink_t)
')

########################################
#
# Prelink Cron system Policy
#

optional_policy(`
	allow prelink_cron_system_t self:capability setuid;
	allow prelink_cron_system_t self:process { setsched setfscreate };
	allow prelink_cron_system_t self:fifo_file rw_fifo_file_perms;
	allow prelink_cron_system_t self:unix_dgram_socket { write bind create setopt };

	read_files_pattern(prelink_cron_system_t, prelink_cache_t, prelink_cache_t)
	allow prelink_cron_system_t prelink_cache_t:file unlink;

	domtrans_pattern(prelink_cron_system_t, prelink_exec_t, prelink_t)
	allow prelink_cron_system_t prelink_t:process noatsecure;

	manage_files_pattern(prelink_cron_system_t, prelink_log_t, prelink_log_t)

	manage_files_pattern(prelink_cron_system_t, prelink_var_lib_t, prelink_var_lib_t)
	files_var_lib_filetrans(prelink_cron_system_t, prelink_var_lib_t, file)
	allow prelink_cron_system_t prelink_var_lib_t:file { relabelfrom relabelto };

	kernel_read_system_state(prelink_cron_system_t)

	corecmd_exec_bin(prelink_cron_system_t)
	corecmd_exec_shell(prelink_cron_system_t)

	files_read_etc_files(prelink_cron_system_t)

	init_exec(prelink_cron_system_t)

	libs_exec_ld_so(prelink_cron_system_t)

	logging_search_logs(prelink_cron_system_t)

	miscfiles_read_localization(prelink_cron_system_t)

	cron_system_entry(prelink_cron_system_t, prelink_cron_system_exec_t)

	optional_policy(`
		rpm_read_db(prelink_cron_system_t)
	')
')