Close all pipes in pipetest.

wyfcyx · wyfcyx · commit 12c6c53af585 · 2021-02-24T03:44:23.000+08:00
diff --git 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

Original file line number	Diff line number	Diff line change
`@@ -23,6 +23,8 @@ pub fn main() -> i32 {`
`23`	`23`	`close(pipe_fd[1]);`
`24`	`24`	`let mut buffer = [0u8; 32];`
`25`	`25`	`let len_read = read(pipe_fd[0], &mut buffer) as usize;`
	`26`	`+ // close read_end`
	`27`	`+ close(pipe_fd[0]);`
`26`	`28`	`assert_eq!(core::str::from_utf8(&buffer[..len_read]).unwrap(), STR);`
`27`	`29`	`println!("Read OK, child process exited!");`
`28`	`30`	`0`