WIP: Exec

kernel/syscall/process.rs

@@ -2,9 +2,20 @@
 
 use arch::interrupt::halt;
 
+use super::{convert_slice, Result};
+
 pub fn exit(status: usize) -> ! {
     println!("Exit {}", status);
     loop {
         unsafe { halt() };
     }
 }
+
+pub fn exec(path: &[u8], args: &[[usize; 2]]) -> Result<usize> {
+    print!("Exec {:?}", ::core::str::from_utf8(path));
+    for arg in args {
+        print!(" {:?}", ::core::str::from_utf8(convert_slice(arg[0] as *const u8, arg[1])?));
+    }
+    println!("");
+    Ok(0)
+}