Function exec

user/src/task.rs:18–20

(path: &str, args: &[*const u8])

    sys_fork()
}
pub fn exec(path: &str, args: &[*const u8]) -> isize {
    sys_exec(path, args)
}
pub fn wait(exit_code: &mut i32) -> isize {
    loop {
        match sys_waitpid(-1, exit_code as *mut _) {