diff --git a/bash-5.1/r_execute_cmd/src/lib.rs b/bash-5.1/r_execute_cmd/src/lib.rs
index 1c2f1a048da21f95e1d33dbef98393a16160c9b7..fe0106882d8b9d8bd2552a8c1d6a6b0cb77cc299 100644
--- a/bash-5.1/r_execute_cmd/src/lib.rs
+++ b/bash-5.1/r_execute_cmd/src/lib.rs
@@ -1895,8 +1895,40 @@ pub unsafe extern "C" fn coproc_dispose(mut cp: *mut coproc) {
     UNBLOCK_SIGNAL!(oset);
 }
 
+#[no_mangle]
+pub unsafe extern "C" fn coproc_flush() {
+    coproc_dispose(&mut sh_coproc);
+}
 
+#[no_mangle]
+pub unsafe extern "C" fn coproc_close(mut cp: *mut coproc) {
+    if (*cp).c_rfd >= 0   {
+        close((*cp).c_rfd);
+        (*cp).c_rfd = -1;
+    }
+    if (*cp).c_wfd >= 0 {
+        close((*cp).c_wfd);
+        (*cp).c_wfd = -1;
+    }
+    let ref mut fresh27 = (*cp).c_wsave;
+    (*cp).c_wsave = -1;
+    (*cp).c_rsave = -1;
+}
 
+#[no_mangle]
+pub unsafe extern "C" fn coproc_closeall() {
+    coproc_close(&mut sh_coproc);
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn coproc_reap() {
+    let mut cp: *mut coproc = 0 as *mut coproc;
+
+    cp = &mut sh_coproc;
+    if !cp.is_null() && (*cp).c_flags & COPROC_DEAD as libc::c_int != 0 {
+        coproc_dispose(cp);
+    }
+}