From 3a81928da6a2f33e93b05f0ba1c78b99336e4f9a Mon Sep 17 00:00:00 2001
From: Yifan Wu <shinbokuow@163.com>
Date: Sun, 21 Feb 2021 09:27:18 +0800
Subject: [PATCH] Close all pipes in pipetest.

---
 user/src/bin/pipetest.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/user/src/bin/pipetest.rs b/user/src/bin/pipetest.rs
index 58237847..c151fbdd 100644
--- a/user/src/bin/pipetest.rs
+++ b/user/src/bin/pipetest.rs
@@ -23,6 +23,8 @@ pub fn main() -> i32 {
         close(pipe_fd[1]);
         let mut buffer = [0u8; 32];
         let len_read = read(pipe_fd[0], &mut buffer) as usize;
+        // close read_end
+        close(pipe_fd[0]);
         assert_eq!(core::str::from_utf8(&buffer[..len_read]).unwrap(), STR);
         println!("Read OK, child process exited!");
         0