diff --git a/bash-5.1/builtins_rust/common/src/lib.rs b/bash-5.1/builtins_rust/common/src/lib.rs
index e3e6bfd8dc5e6067d72a470e39630fe5b933e503..e0ff75098d202c752b70c791cab287414a1c88da 100644
--- a/bash-5.1/builtins_rust/common/src/lib.rs
+++ b/bash-5.1/builtins_rust/common/src/lib.rs
@@ -519,3 +519,78 @@ macro_rules! J_JOBSTATE {
         (*$j).state
     }
 }
+
+//enum
+#[repr(i8)]
+#[derive(PartialEq)]
+pub enum JOB_STATE {
+    JNONE = -1,
+    JRUNNING = 1,
+    JSTOPPED = 2,
+    JDEAD = 4,
+    JMIXED = 8
+}
+
+//type
+pub type sh_builtin_func_t = fn (*mut WordList)->i32;
+pub type QSFUNC = unsafe extern "C" fn(*const c_void,*const c_void)->i32;
+pub static EX_SUCCESS:i32 = 0;
+pub static EX_USAGE:i32 = 258;
+include!("./shell.rs");//extern C
+
+extern "C"{
+    static interactive_shell:i32;
+    static this_command_name:*mut c_char;
+    static mut current_builtin:*mut builtin;
+    static terminating_signal:c_int;
+    static interrupt_state:c_int;
+    static stdout:*mut FILE;
+    static mut posparam_count:i32;
+    static mut dollar_vars:[*mut c_char;10];
+    static mut rest_of_args:*mut WordList;
+    static variable_context:i32;
+    static running_trap:i32;
+    static trap_saved_exit_value:i32;
+    static last_command_exit_value:i32;
+    static no_symbolic_links:i32;
+    // static bsah_getcwd_errstr:*const c_char;
+    static js:jobstats;
+    static jobs:*mut*mut JOB;
+    static assoc_expand_once:i32;
+    static shell_builtins:*mut builtin;
+    static mut num_shell_builtins:i32;
+    static posixly_correct:i32;
+    fn get_name_for_error()->*mut c_char;
+    fn executing_line_number()->i32;
+    fn top_level_cleanup();
+    fn jump_to_top_level(value:i32);
+    fn internal_getopt(list:*mut WordList,opts:*mut c_char)->i32;
+    fn reset_internal_getopt();
+    fn termsig_handler(sig:i32);
+    fn throw_to_top_level();
+    fn fpurge(stream:*mut FILE) ->i32;
+    fn strvec_from_word_list(list:*mut WordList,alloc:i32,starting_index:i32,ip:*mut i32)->*mut *mut c_char;
+    fn xmalloc(n:size_t)->*mut c_void;
+    fn dispose_words(list:*mut WordList);
+    fn copy_word_list(list:*mut WordList)->*mut WordList;
+    fn list_length(list:*mut GENERIC_LIST)->i32;
+    fn invalidate_cached_quoted_dollar_at();
+    fn set_builtin(list:*mut WordList)->i32;
+    fn legal_number(string:*mut c_char,result:*mut c_long)->i32;
+    fn return_builtin(list:*mut WordList)->i32;
+    fn getcwd(buf:*mut c_char,size:size_t)->*mut c_char;
+    fn internal_error(format:*const c_char,...);
+    fn strcasestr(s1:*const c_char,s2:*const c_char)->*mut c_char;
+    fn all_digits(string:*const c_char)->i32;
+    fn valid_array_reference(name:*const c_char,flags:i32)->i32;
+    fn bind_variable (name:* const c_char,value:* mut c_char,flags:i32)->* mut SHELL_VAR;
+    fn assign_array_element(name:*mut c_char,value:*mut c_char,flags:i32)->*mut SHELL_VAR;
+    fn find_variable(_:*const c_char)->*mut SHELL_VAR;
+    fn unbind_variable(name:*const c_char)->i32;
+    fn signal_name(sig:i32)->*mut c_char;
+    fn kill_builtin(list:*mut WordList)->i32;
+    fn decode_signal(string:*mut c_char,flags:i32)->i32;
+    fn builtin_help();
+    
+    fn builtin_error(format:*const c_char,...);
+}