selinux-refpolicy/refpolicy/policy/modules/system/init.if

## <summary>System initialization programs (init and init scripts).</summary>

########################################
#
# init_domain(domain,entrypointfile)
#
interface(`init_domain',`
	gen_require(`
		type init_t;
		role system_r;
		class fd use;
		class fifo_file rw_file_perms;
		class process sigchld;
	')

	domain_type($1)
	domain_entry_file($1,$2)

	role system_r types $1;

	domain_auto_trans(init_t,$2,$1)

	allow $1 init_t:fd use;
	allow init_t $1:fd use;
	allow $1 init_t:fifo_file rw_file_perms;
	allow $1 init_t:process sigchld;

	# Red Hat systems seem to have a stray
	# fd open from the initrd
	optional_policy(`distro_redhat',`
		kernel_dontaudit_use_fd($1)
		files_dontaudit_read_root_file($1)
	')
')

########################################
#
# init_daemon_domain(domain,entrypointfile)
#
interface(`init_daemon_domain',`
	gen_require(`
		type initrc_t;
		role system_r;
		class fifo_file rw_file_perms;
		class fd use;
		class process sigchld;
	')

	domain_type($1)
	domain_entry_file($1,$2)

	role system_r types $1;

	domain_auto_trans(initrc_t,$2,$1)

	allow initrc_t $1:fd use;
	allow $1 initrc_t:fd use;
	allow $1 initrc_t:fifo_file rw_file_perms;
	allow $1 initrc_t:process sigchld;

	# Red Hat systems seem to have a stray
	# fd open from the initrd
	optional_policy(`distro_redhat',`
		kernel_dontaudit_use_fd($1)
		files_dontaudit_read_root_file($1)
	')
')

########################################
#
# init_system_domain(domain,entrypointfile)
#
interface(`init_system_domain',`
	gen_require(`
		type initrc_t;
		role system_r;
		class fd use;
		class fifo_file rw_file_perms;
		class process sigchld;
	')

	domain_type($1)
	domain_entry_file($1,$2)

	role system_r types $1;

	domain_auto_trans(initrc_t,$2,$1)

	allow initrc_t $1:fd use;
	allow $1 initrc_t:fd use;
	allow $1 initrc_t:fifo_file rw_file_perms;
	allow $1 initrc_t:process sigchld;

	# Red Hat systems seem to have a stray
	# fd open from the initrd
	optional_policy(`distro_redhat',`
		kernel_dontaudit_use_fd($1)
		files_dontaudit_read_root_file($1)
	')
')

########################################
#
# init_domtrans(domain)
#
interface(`init_domtrans',`
	gen_require(`
		type init_t, init_exec_t;
		class process sigchld;
		class fd use;
		class fifo_file rw_file_perms;
	')

	domain_auto_trans($1,init_exec_t,init_t)

	allow $1 init_t:fd use;
	allow init_t $1:fd use;
	allow init_t $1:fifo_file rw_file_perms;
	allow init_t $1:process sigchld;
')

########################################
#
# init_get_process_group(domain)
#
interface(`init_get_process_group',`
	gen_require(`
		type init_t;
		class process getpgid;
	')

	allow $1 init_t:process getpgid;
')

########################################
#
# init_getattr_initctl(domain)
#
interface(`init_getattr_initctl',`
	gen_require(`
		type initctl_t;
		class fifo_file getattr;
	')

	allow $1 initctl_t:fifo_file getattr;
')

########################################
#
# init_dontaudit_getattr_initctl(domain)
#
interface(`init_dontaudit_getattr_initctl',`
	gen_require(`
		type initctl_t;
		class fifo_file getattr;
	')

	dontaudit $1 initctl_t:fifo_file getattr;
')

########################################
#
# init_use_initctl(domain)
#
interface(`init_use_initctl',`
	gen_require(`
		type initctl_t;
		class fifo_file rw_file_perms;
	')

	dev_list_all_dev_nodes($1)
	allow $1 initctl_t:fifo_file rw_file_perms;
')

########################################
#
# init_dontaudit_use_initctl(domain)
#
interface(`init_dontaudit_use_initctl',`
	gen_require(`
		type initctl_t;
		class fifo_file { read write };
	')

	dontaudit $1 initctl_t:fifo_file { read write };
')

########################################
#
# init_sigchld(domain)
#
interface(`init_sigchld',`
	gen_require(`
		type init_t;
		class process sigchld;
	')

	allow $1 init_t:process sigchld;
')

########################################
#
# init_use_fd(domain)
#
interface(`init_use_fd',`
	gen_require(`
		type init_t;
		class fd use;
	')

	allow $1 init_t:fd use;
')

########################################
#
# init_dontaudit_use_fd(domain)
#
interface(`init_dontaudit_use_fd',`
	gen_require(`
		type init_t;
		class fd use;
	')

	dontaudit $1 init_t:fd use;
')

########################################
#
# init_domtrans_script(domain)
#
interface(`init_domtrans_script',`
	gen_require(`
		type initrc_t, initrc_exec_t;
		class process sigchld;
		class fd use;
		class fifo_file rw_file_perms;
	')

	files_list_etc($1)
	domain_auto_trans($1,initrc_exec_t,initrc_t)

	allow $1 initrc_t:fd use;
	allow initrc_t $1:fd use;
	allow initrc_t $1:fifo_file rw_file_perms;
	allow initrc_t $1:process sigchld;
')

########################################
#
# init_exec_script(domain)
#
interface(`init_exec_script',`
	gen_require(`
		type initrc_exec_t;
	')

	files_list_etc($1)
	can_exec($1,initrc_exec_t)
')

########################################
## <summary>
##	Read the process state (/proc/pid) of the init scripts.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`init_read_script_process_state',`
	gen_require(`
		type initrc_t;
		class dir r_dir_perms;
		class file r_file_perms;
		class lnk_file r_file_perms;
		class process { getattr ptrace };
	')

	#FIXME: search proc dir
	allow $1 initrc_t:dir r_dir_perms;
	allow $1 initrc_t:{ file lnk_file } r_file_perms;
	allow $1 initrc_t:process getattr;

	# We need to suppress this denial because procps tries to access
	# /proc/pid/environ and this now triggers a ptrace check in recent kernels
	# (2.4 and 2.6).  Might want to change procps to not do this, or only if
	# running in a privileged domain.
	dontaudit $1 initrc_t:process ptrace;
')

########################################
#
# init_use_script_fd(domain)
#
interface(`init_use_script_fd',`
	gen_require(`
		type initrc_t;
		class fd use;
	')

	allow $1 initrc_t:fd use;
')

########################################
#
# init_dontaudit_use_script_fd(domain)
#
interface(`init_dontaudit_use_script_fd',`
	gen_require(`
		type initrc_t;
		class fd use;
	')

	dontaudit $1 initrc_t:fd use;
')

########################################
#
# init_get_script_process_group(domain)
#
interface(`init_get_script_process_group',`
	gen_require(`
		type initrc_t;
		class process getpgid;
	')

	allow $1 initrc_t:process getpgid;
')

########################################
## <summary>
##	Read and write init script unnamed pipes.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`init_rw_script_pipe',`
	gen_require(`
		type initrc_t;
		class chr_file { read write };
	')

	allow $1 initrc_t:fifo_file { read write };
')

########################################
## <summary>
##	Send UDP network traffic to init scripts.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`init_udp_sendto_script',`
	gen_require(`
		type initrc_t;
		class udp_socket { sendto recvfrom };
	')

	allow $1 initrc_t:udp_socket sendto;
	allow initrc_t $1:udp_socket recvfrom;
')

########################################
#
# init_use_script_pty(domain)
#
interface(`init_use_script_pty',`
	gen_require(`
		type initrc_devpts_t;
		class chr_file rw_term_perms;
	')

	term_list_ptys($1)
	allow $1 initrc_devpts_t:chr_file rw_term_perms;
')

########################################
#
# init_dontaudit_use_script_pty(domain)
#
interface(`init_dontaudit_use_script_pty',`
	gen_require(`
		type initrc_devpts_t;
		class chr_file { read write ioctl };
	')

	dontaudit $1 initrc_devpts_t:chr_file { read write ioctl };
')

########################################
## <summary>
##	Read and write init script temporary data.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`init_rw_script_tmp_files',`
	gen_require(`
		type initrc_var_run_t;
		class file rw_file_perms;
	')

	# FIXME: read tmp_t dir
	allow $1 initrc_tmp_t:file rw_file_perms;
')

########################################
#
# init_read_script_pid(domain)
#
interface(`init_read_script_pid',`
	gen_require(`
		type initrc_var_run_t;
		class file r_file_perms;
	')

	files_list_pids($1)
	allow $1 initrc_var_run_t:file r_file_perms;
')

########################################
#
# init_dontaudit_write_script_pid(domain)
#
interface(`init_dontaudit_write_script_pid',`
	gen_require(`
		type initrc_var_run_t;
		class file { write lock };
	')

	dontaudit $1 initrc_var_run_t:file { write lock };
')

########################################
#
# init_rw_script_pid(domain)
#
interface(`init_rw_script_pid',`
	gen_require(`
		type initrc_var_run_t;
		class file rw_file_perms;
	')

	files_list_pids($1)
	allow $1 initrc_var_run_t:file rw_file_perms;
')

########################################
#
# init_dontaudit_rw_script_pid(domain)
#
interface(`init_dontaudit_rw_script_pid',`
	gen_require(`
		type initrc_var_run_t;
		class file rw_file_perms;
	')

	dontaudit $1 initrc_var_run_t:file { getattr read write append };
')