Function syscall4

pub unsafe fn syscall4(
    nr: usize,
    arg0: usize,
    arg1: usize,
    arg2: usize,
    arg3: usize,
) -> Retval

Invoke System Call With 4 Arguments

This invokes the system call with the specified system-call-number. The provided arguments are passed to the system call unmodified.

Safety

• System calls can have arbitrary side-effects. It is the responsibility of the caller to consider all effects of a system call and take required precautions.