Function linux_syscalls::syscall4

pub unsafe fn syscall4(
    sysno: Sysno,
    arg0: usize,
    arg1: usize,
    arg2: usize,
    arg3: usize
) -> Result<usize, Errno>

Make a raw system call with 4 arguments.

Returns a Result<usize, Errno>.

Safety

A system call is unsafe by definition. It’s the caller’s responsibility to ensure safety.