diff --git a/bash-5.1/r_execute_cmd/src/lib.rs b/bash-5.1/r_execute_cmd/src/lib.rs
index f0837893de9837515006e18ac220ed85911f76a1..2366482639c5a2c7b3f3085cf4573ef6bc5b0c53 100644
--- a/bash-5.1/r_execute_cmd/src/lib.rs
+++ b/bash-5.1/r_execute_cmd/src/lib.rs
@@ -1967,8 +1967,37 @@ pub unsafe extern "C" fn coproc_checkfd(mut cp: *mut coproc, mut fd: libc::c_int
     }
 }
 
+#[no_mangle]
+pub unsafe extern "C" fn coproc_fdchk(mut fd: libc::c_int) {
+    coproc_checkfd(&mut sh_coproc, fd);
+}
 
+#[no_mangle]
+pub unsafe extern "C" fn coproc_fdclose(mut cp: *mut coproc, mut fd: libc::c_int) {
+    coproc_rclose(cp, fd);
+    coproc_wclose(cp, fd);
+    coproc_setvars(cp);
+}
 
+#[no_mangle]
+pub unsafe extern "C" fn coproc_fdsave(mut cp: *mut coproc) {
+    (*cp).c_rsave = (*cp).c_rfd;
+    (*cp).c_wsave = (*cp).c_wfd;
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn coproc_fdrestore(mut cp: *mut coproc) {
+    (*cp).c_rfd = (*cp).c_rsave;
+    (*cp).c_wfd = (*cp).c_wsave;
+}
+
+unsafe extern "C" fn coproc_setstatus(mut cp: *mut coproc, mut status: libc::c_int) {
+    (*cp).c_lock = 4 ;
+    (*cp).c_status = status;
+    (*cp).c_flags |= COPROC_DEAD as libc::c_int;
+    (*cp).c_flags &= !(COPROC_RUNNING as libc::c_int);
+    (*cp).c_lock = 0 as libc::c_int;
+}