diff --git a/utshell-0.5/r_general/src/lib.rs b/utshell-0.5/r_general/src/lib.rs
index 5eef791d4003cd3f0d38964cfe9531460f6ff4aa..f2591c8ad12113bab1ae2535c67ca9c6e8f6f1f8 100644
--- a/utshell-0.5/r_general/src/lib.rs
+++ b/utshell-0.5/r_general/src/lib.rs
@@ -1227,3 +1227,72 @@ pub unsafe extern "C" fn sh_closepipe(mut pv: *mut libc::c_int) -> libc::c_int {
     *pv.offset(0 as isize) = *fresh1;
     return 0;
 }
+
+/* **************************************************************** */
+/*								    */
+/*		    Functions to inspect pathnames		    */
+/*								    */
+/* **************************************************************** */
+#[no_mangle]
+pub unsafe extern "C" fn file_exists(mut fn_0: *const libc::c_char) -> libc::c_int {
+    let mut sb: stat = stat {
+        st_dev: 0,
+        st_ino: 0,
+        st_nlink: 0,
+        st_mode: 0,
+        st_uid: 0,
+        st_gid: 0,
+        __pad0: 0,
+        st_rdev: 0,
+        st_size: 0,
+        st_blksize: 0,
+        st_blocks: 0,
+        st_atim: timespec {
+            tv_sec: 0,
+            tv_nsec: 0,
+        },
+        st_mtim: timespec {
+            tv_sec: 0,
+            tv_nsec: 0,
+        },
+        st_ctim: timespec {
+            tv_sec: 0,
+            tv_nsec: 0,
+        },
+        __glibc_reserved: [0; 3],
+    };
+
+    return (stat(fn_0, &mut sb) == 0 as libc::c_int) as libc::c_int;
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn file_isdir(mut fn_0: *const libc::c_char) -> libc::c_int {
+    let mut sb: stat = stat {
+        st_dev: 0,
+        st_ino: 0,
+        st_nlink: 0,
+        st_mode: 0,
+        st_uid: 0,
+        st_gid: 0,
+        __pad0: 0,
+        st_rdev: 0,
+        st_size: 0,
+        st_blksize: 0,
+        st_blocks: 0,
+        st_atim: timespec {
+            tv_sec: 0,
+            tv_nsec: 0,
+        },
+        st_mtim: timespec {
+            tv_sec: 0,
+            tv_nsec: 0,
+        },
+        st_ctim: timespec {
+            tv_sec: 0,
+            tv_nsec: 0,
+        },
+        __glibc_reserved: [0; 3],
+    };
+
+    return (stat(fn_0, &mut sb) == 0 && S_ISDIR!(sb.st_mode)) as libc::c_int;
+}
\ No newline at end of file