proc_seteuid     4804 process.c      	proc_seteuid(obj, UIDT2NUM(uid));
proc_seteuid     4812 process.c      	proc_seteuid(obj, UIDT2NUM(SAVED_USER_ID));
proc_seteuid     5156 process.c          rb_define_module_function(rb_mProcess, "euid=", proc_seteuid, 1);