Function openlog

pub fn openlog(ident: &str, option: c_int, facility: c_int)

C openlog, we use &str to replace *const i8. We still use libc flags here

Examples

let ident = String::from("myprogram");
syslog_c::openlog(&ident, libc::LOG_CONS | libc::LOG_PID, libc::LOG_AUTHPRIV);