journald 0.4.0

A rust binding for the systemd journald api
Documentation 
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extern crate libc;
extern crate log;
extern crate libsystemd_sys as ffi;
extern crate cstr_argument;

pub use std::io::{Result, Error};

/// Convert a systemd ffi return value into a Result
pub fn ffi_result(ret: ffi::c_int) -> Result<ffi::c_int> {
    if ret < 0 {
        Err(Error::from_raw_os_error(-ret))
    } else {
        Ok(ret)
    }
}

/// An analogue of `try!()` for systemd FFI calls.
///
/// The parameter should be a call to a systemd FFI fn with an c_int return
/// value. It is called, and if the return is negative then `sd_try!()`
/// interprets it as an error code and returns IoError from the enclosing fn.
/// Otherwise, the value of `sd_try!()` is the non-negative value returned by
/// the FFI call.
#[macro_export]
macro_rules! sd_try {
    ($e:expr) => ({
        try!($crate::ffi_result(unsafe{ $e}))
    })
}

#[path="journal_entry.rs"]
mod entry;
pub use self::entry::*;

#[path="journal_reader.rs"]
pub mod reader;

#[path="journal_writer.rs"]
pub mod writer;