init: add test std*** setup

build.sh

@@ -13,6 +13,10 @@ fi
 USER_TARGET=${ARCH}-unknown-yggdrasil
 USER_CARGO_OPTS="--target=${USER_TARGET}"
 
+if [ "${PROFILE}" = "release" ]; then
+    USER_CARGO_OPTS="${USER_CARGO_OPTS} --release"
+fi
+
 pstatus() {
     echo -e "[BUILD] \033[32;1m$@\033[0m"
 }

init/src/main.rs

@@ -1,12 +1,9 @@
 #![feature(rustc_private)]
 
 use std::fs::File;
-use std::io::Read;
-use std::os::yggdrasil::{mount, unmount, MountOptions, UnmountOptions};
+use std::os::yggdrasil::{mount, open, OpenOptions, FileMode, unmount, MountOptions, UnmountOptions};
 
 fn main() {
-    println!("Hello!");
-
     unsafe {
         mount(MountOptions {
             source: None,
@@ -14,26 +11,24 @@ fn main() {
             target: "/dev",
         })
         .unwrap();
+
+        // Open stdin/stdout/stderr
+        open("/dev/ttyS0", OpenOptions::READ, FileMode::empty()).unwrap();
+        open("/dev/ttyS0", OpenOptions::WRITE, FileMode::empty()).unwrap();
+        open("/dev/ttyS0", OpenOptions::WRITE, FileMode::empty()).unwrap();
     }
 
-    let mut file = File::open("/dev/ttyS0").unwrap();
-    let mut buf = [0; 1];
+    let mut stdin = std::io::stdin();
+    let mut buffer = String::new();
 
-    while let Ok(count) = file.read(&mut buf) {
-        if count != 1 {
+    while let Ok(len) = stdin.read_line(&mut buffer) {
+        if len == 0 {
+            println!("End of file reached");
             break;
         }
-
-        if buf[0] == 0x3 {
-            break;
+        println!("{:?}", buffer.trim());
+        buffer.clear();
     }
 
-        println!("Got {:#x}", buf[0]);
-    }
-
-    unsafe {
-        unmount(UnmountOptions {
-            mountpoint: "/dev"
-        }).unwrap();
-    }
+    loop {}
 }