Function linux_syscalls::raw_syscall0_readonly

pub unsafe fn raw_syscall0_readonly(sysno: Sysno) -> usize

Make a raw system call with 0 arguments. Like the non _readonly version but you declare that syscall does not mutate any memory.

Returns a raw usize, doesn’t not check for errors.

Safety

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