Large reorganization of headers (WIP)

src/header/stdio/default.rs

@@ -0,0 +1,61 @@
+use super::{constants, BUFSIZ, FILE, UNGET};
+use core::cell::UnsafeCell;
+use core::ptr;
+use core::sync::atomic::AtomicBool;
+
+pub struct GlobalFile(UnsafeCell<FILE>);
+impl GlobalFile {
+    const fn new(file: FILE) -> Self {
+        GlobalFile(UnsafeCell::new(file))
+    }
+    pub fn get(&self) -> *mut FILE {
+        self.0.get()
+    }
+}
+// statics need to be Sync
+unsafe impl Sync for GlobalFile {}
+
+lazy_static! {
+    #[allow(non_upper_case_globals)]
+    pub static ref default_stdin: GlobalFile = GlobalFile::new(FILE {
+        flags: constants::F_PERM | constants::F_NOWR,
+        read: None,
+        write: None,
+        fd: 0,
+        buf: vec![0u8;(BUFSIZ + UNGET) as usize],
+        buf_char: -1,
+        unget: UNGET,
+        lock: AtomicBool::new(false),
+    });
+
+    #[allow(non_upper_case_globals)]
+    pub static ref default_stdout: GlobalFile = GlobalFile::new(FILE {
+        flags: constants::F_PERM | constants::F_NORD,
+        read: None,
+        write: None,
+        fd: 1,
+        buf: vec![0u8;(BUFSIZ + UNGET) as usize],
+        buf_char: b'\n' as i8,
+        unget: 0,
+        lock: AtomicBool::new(false),
+    });
+
+    #[allow(non_upper_case_globals)]
+    pub static ref default_stderr: GlobalFile = GlobalFile::new(FILE {
+        flags: constants::F_PERM | constants::F_NORD,
+        read: None,
+        write: None,
+        fd: 2,
+        buf: vec![0u8;(BUFSIZ + UNGET) as usize],
+        buf_char: -1,
+        unget: 0,
+        lock: AtomicBool::new(false),
+    });
+}
+
+#[no_mangle]
+pub static mut stdin: *mut FILE = ptr::null_mut();
+#[no_mangle]
+pub static mut stdout: *mut FILE = ptr::null_mut();
+#[no_mangle]
+pub static mut stderr: *mut FILE = ptr::null_mut();