Function getresgid
pub unsafe extern "C" fn getresgid(rgid: *mut gid_t, egid: *mut gid_t, sgid: *mut gid_t) -> c_intgetresgidpub unsafe extern "C" fn getresgid(rgid: *mut gid_t, egid: *mut gid_t, sgid: *mut gid_t) -> c_int