Adding upstream version 3.1.8.upstream/3.1.8upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 2972 insertions, 0 deletions

diff --git a/bindings/rust/src/cfg.rs b/bindings/rust/src/cfg.rs
new file mode 100644
index 0000000..b4eecac
--- /dev/null
+++ b/bindings/rust/src/cfg.rs
@@ -0,0 +1,348 @@
+// libcfg interface for Rust
+// Copyright (c) 2021 Red Hat, Inc.
+//
+// All rights reserved.
+//
+// Author: Christine Caulfield (ccaulfi@redhat.com)
+//
+
+// For the code generated by bindgen
+use crate::sys::cfg as ffi;
+
+use std::collections::HashMap;
+use std::ffi::CString;
+use std::os::raw::{c_int, c_void};
+use std::sync::Mutex;
+
+use crate::string_from_bytes;
+use crate::{CsError, DispatchFlags, NodeId, Result};
+
+// Used to convert a CFG handle into one of ours
+lazy_static! {
+    static ref HANDLE_HASH: Mutex<HashMap<u64, Handle>> = Mutex::new(HashMap::new());
+}
+
+/// Callback from [track_start]. Will be called if another process
+/// requests to shut down corosync. [reply_to_shutdown] should be called
+/// with a [ShutdownReply] of either Yes or No.
+#[derive(Copy, Clone)]
+pub struct Callbacks {
+    pub corosync_cfg_shutdown_callback_fn: Option<fn(handle: &Handle, flags: u32)>,
+}
+
+/// A handle into the cfg library. returned from [initialize] and needed for all other calls
+#[derive(Copy, Clone)]
+pub struct Handle {
+    cfg_handle: u64,
+    callbacks: Callbacks,
+}
+
+/// Flags for [try_shutdown]
+pub enum ShutdownFlags {
+    /// Request shutdown (other daemons will be consulted)
+    Request,
+    /// Tells other daemons but ignore their opinions
+    Regardless,
+    /// Go down straight away (but still tell other nodes)
+    Immediate,
+}
+
+/// Responses for [reply_to_shutdown]
+pub enum ShutdownReply {
+    Yes = 1,
+    No = 0,
+}
+
+/// Trackflags for [track_start]. None currently supported
+pub enum TrackFlags {
+    None,
+}
+
+/// Version of the [NodeStatus] structure returned from [node_status_get]
+#[derive(Debug, Copy, Clone)]
+pub enum NodeStatusVersion {
+    V1,
+}
+
+/// Status of a link inside [NodeStatus] struct
+#[derive(Debug)]
+pub struct LinkStatus {
+    pub enabled: bool,
+    pub connected: bool,
+    pub dynconnected: bool,
+    pub mtu: u32,
+    pub src_ipaddr: String,
+    pub dst_ipaddr: String,
+}
+
+/// Structure returned from [node_status_get], shows all the details of a node
+/// that is known to corosync, including all configured links
+#[derive(Debug)]
+pub struct NodeStatus {
+    pub version: NodeStatusVersion,
+    pub nodeid: NodeId,
+    pub reachable: bool,
+    pub remote: bool,
+    pub external: bool,
+    pub onwire_min: u8,
+    pub onwire_max: u8,
+    pub onwire_ver: u8,
+    pub link_status: Vec<LinkStatus>,
+}
+
+extern "C" fn rust_shutdown_notification_fn(handle: ffi::corosync_cfg_handle_t, flags: u32) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        if let Some(cb) = h.callbacks.corosync_cfg_shutdown_callback_fn {
+            (cb)(h, flags);
+        }
+    }
+}
+
+/// Initialize a connection to the cfg library. You must call this before doing anything
+/// else and use the passed back [Handle].
+/// Remember to free the handle using [finalize] when finished.
+pub fn initialize(callbacks: &Callbacks) -> Result<Handle> {
+    let mut handle: ffi::corosync_cfg_handle_t = 0;
+
+    let c_callbacks = ffi::corosync_cfg_callbacks_t {
+        corosync_cfg_shutdown_callback: Some(rust_shutdown_notification_fn),
+    };
+
+    unsafe {
+        let res = ffi::corosync_cfg_initialize(&mut handle, &c_callbacks);
+        if res == ffi::CS_OK {
+            let rhandle = Handle {
+                cfg_handle: handle,
+                callbacks: *callbacks,
+            };
+            HANDLE_HASH.lock().unwrap().insert(handle, rhandle);
+            Ok(rhandle)
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+/// Finish with a connection to corosync, after calling this the [Handle] is invalid
+pub fn finalize(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::corosync_cfg_finalize(handle.cfg_handle) };
+    if res == ffi::CS_OK {
+        HANDLE_HASH.lock().unwrap().remove(&handle.cfg_handle);
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+// not sure if an fd is the right thing to return here, but it will do for now.
+/// Returns a file descriptor to use for poll/select on the CFG handle
+pub fn fd_get(handle: Handle) -> Result<i32> {
+    let c_fd: *mut c_int = &mut 0 as *mut _ as *mut c_int;
+    let res = unsafe { ffi::corosync_cfg_fd_get(handle.cfg_handle, c_fd) };
+    if res == ffi::CS_OK {
+        Ok(c_fd as i32)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the local [NodeId]
+pub fn local_get(handle: Handle) -> Result<NodeId> {
+    let mut nodeid: u32 = 0;
+    let res = unsafe { ffi::corosync_cfg_local_get(handle.cfg_handle, &mut nodeid) };
+    if res == ffi::CS_OK {
+        Ok(NodeId::from(nodeid))
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Reload the cluster configuration on all nodes
+pub fn reload_cnfig(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::corosync_cfg_reload_config(handle.cfg_handle) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Re-open the cluster log files, on this node only
+pub fn reopen_log_files(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::corosync_cfg_reopen_log_files(handle.cfg_handle) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Tell another cluster node to shutdown. reason is a string that
+/// will be written to the system log files.
+pub fn kill_node(handle: Handle, nodeid: NodeId, reason: &str) -> Result<()> {
+    let c_string = {
+        match CString::new(reason) {
+            Ok(cs) => cs,
+            Err(_) => return Err(CsError::CsErrInvalidParam),
+        }
+    };
+
+    let res = unsafe {
+        ffi::corosync_cfg_kill_node(handle.cfg_handle, u32::from(nodeid), c_string.as_ptr())
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Ask this cluster node to shutdown. If [ShutdownFlags] is set to Request then
+///it may be refused by other applications
+/// that have registered for shutdown callbacks.
+pub fn try_shutdown(handle: Handle, flags: ShutdownFlags) -> Result<()> {
+    let c_flags = match flags {
+        ShutdownFlags::Request => 0,
+        ShutdownFlags::Regardless => 1,
+        ShutdownFlags::Immediate => 2,
+    };
+    let res = unsafe { ffi::corosync_cfg_try_shutdown(handle.cfg_handle, c_flags) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Reply to a shutdown request with Yes or No [ShutdownReply]
+pub fn reply_to_shutdown(handle: Handle, flags: ShutdownReply) -> Result<()> {
+    let c_flags = match flags {
+        ShutdownReply::No => 0,
+        ShutdownReply::Yes => 1,
+    };
+    let res = unsafe { ffi::corosync_cfg_replyto_shutdown(handle.cfg_handle, c_flags) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Call any/all active CFG callbacks for this [Handle] see [DispatchFlags] for details
+pub fn dispatch(handle: Handle, flags: DispatchFlags) -> Result<()> {
+    let res = unsafe { ffi::corosync_cfg_dispatch(handle.cfg_handle, flags as u32) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+// Quick & dirty u8 to boolean
+fn u8_to_bool(val: u8) -> bool {
+    val != 0
+}
+
+const CFG_MAX_LINKS: usize = 8;
+const CFG_MAX_HOST_LEN: usize = 256;
+fn unpack_nodestatus(c_nodestatus: ffi::corosync_cfg_node_status_v1) -> Result<NodeStatus> {
+    let mut ns = NodeStatus {
+        version: NodeStatusVersion::V1,
+        nodeid: NodeId::from(c_nodestatus.nodeid),
+        reachable: u8_to_bool(c_nodestatus.reachable),
+        remote: u8_to_bool(c_nodestatus.remote),
+        external: u8_to_bool(c_nodestatus.external),
+        onwire_min: c_nodestatus.onwire_min,
+        onwire_max: c_nodestatus.onwire_max,
+        onwire_ver: c_nodestatus.onwire_min,
+        link_status: Vec::<LinkStatus>::new(),
+    };
+    for i in 0..CFG_MAX_LINKS {
+        let ls = LinkStatus {
+            enabled: u8_to_bool(c_nodestatus.link_status[i].enabled),
+            connected: u8_to_bool(c_nodestatus.link_status[i].connected),
+            dynconnected: u8_to_bool(c_nodestatus.link_status[i].dynconnected),
+            mtu: c_nodestatus.link_status[i].mtu,
+            src_ipaddr: string_from_bytes(
+                &c_nodestatus.link_status[i].src_ipaddr[0],
+                CFG_MAX_HOST_LEN,
+            )?,
+            dst_ipaddr: string_from_bytes(
+                &c_nodestatus.link_status[i].dst_ipaddr[0],
+                CFG_MAX_HOST_LEN,
+            )?,
+        };
+        ns.link_status.push(ls);
+    }
+
+    Ok(ns)
+}
+
+// Constructor for link status to make c_ndostatus initialization tidier.
+fn new_ls() -> ffi::corosync_knet_link_status_v1 {
+    ffi::corosync_knet_link_status_v1 {
+        enabled: 0,
+        connected: 0,
+        dynconnected: 0,
+        mtu: 0,
+        src_ipaddr: [0; 256],
+        dst_ipaddr: [0; 256],
+    }
+}
+
+/// Get the extended status of a node in the cluster (including active links) from its [NodeId].
+/// Returns a filled in [NodeStatus] struct
+pub fn node_status_get(
+    handle: Handle,
+    nodeid: NodeId,
+    _version: NodeStatusVersion,
+) -> Result<NodeStatus> {
+    // Currently only supports V1 struct
+    unsafe {
+        // We need to initialize this even though it's all going to be overwritten.
+        let mut c_nodestatus = ffi::corosync_cfg_node_status_v1 {
+            version: 1,
+            nodeid: 0,
+            reachable: 0,
+            remote: 0,
+            external: 0,
+            onwire_min: 0,
+            onwire_max: 0,
+            onwire_ver: 0,
+            link_status: [new_ls(); 8],
+        };
+
+        let res = ffi::corosync_cfg_node_status_get(
+            handle.cfg_handle,
+            u32::from(nodeid),
+            1,
+            &mut c_nodestatus as *mut _ as *mut c_void,
+        );
+
+        if res == ffi::CS_OK {
+            unpack_nodestatus(c_nodestatus)
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+/// Start tracking for shutdown notifications
+pub fn track_start(handle: Handle, _flags: TrackFlags) -> Result<()> {
+    let res = unsafe { ffi::corosync_cfg_trackstart(handle.cfg_handle, 0) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Stop tracking for shutdown notifications
+pub fn track_stop(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::corosync_cfg_trackstop(handle.cfg_handle) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
diff --git a/bindings/rust/src/cmap.rs b/bindings/rust/src/cmap.rs
new file mode 100644
index 0000000..454fbee
--- /dev/null
+++ b/bindings/rust/src/cmap.rs
@@ -0,0 +1,894 @@
+// libcmap interface for Rust
+// Copyright (c) 2021 Red Hat, Inc.
+//
+// All rights reserved.
+//
+// Author: Christine Caulfield (ccaulfi@redhat.com)
+//
+
+#![allow(clippy::type_complexity)]
+
+// For the code generated by bindgen
+use crate::sys::cmap as ffi;
+
+use num_enum::TryFromPrimitive;
+use std::any::type_name;
+use std::collections::HashMap;
+use std::convert::TryFrom;
+use std::ffi::CString;
+use std::fmt;
+use std::os::raw::{c_char, c_int, c_void};
+use std::ptr::copy_nonoverlapping;
+use std::sync::Mutex;
+
+use crate::string_from_bytes;
+use crate::{CsError, DispatchFlags, Result};
+
+// Maps:
+/// "Maps" available to [initialize]
+pub enum Map {
+    Icmap,
+    Stats,
+}
+
+bitflags! {
+/// Tracker types for cmap, both passed into [track_add]
+/// and returned from its callback.
+    pub struct TrackType: i32
+    {
+    const DELETE = 1;
+    const MODIFY = 2;
+    const ADD = 4;
+    const PREFIX = 8;
+    }
+}
+
+impl fmt::Display for TrackType {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        if self.contains(TrackType::DELETE) {
+            write!(f, "DELETE ")?
+        }
+        if self.contains(TrackType::MODIFY) {
+            write!(f, "MODIFY ")?
+        }
+        if self.contains(TrackType::ADD) {
+            write!(f, "ADD ")?
+        }
+        if self.contains(TrackType::PREFIX) {
+            write!(f, "PREFIX ")
+        } else {
+            Ok(())
+        }
+    }
+}
+
+#[derive(Copy, Clone)]
+/// A handle returned from [initialize], needs to be passed to all other cmap API calls
+pub struct Handle {
+    cmap_handle: u64,
+}
+
+#[derive(Copy, Clone)]
+/// A handle for a specific CMAP tracker. returned from [track_add].
+/// There may be multiple TrackHandles per [Handle]
+pub struct TrackHandle {
+    track_handle: u64,
+    notify_callback: NotifyCallback,
+}
+
+// Used to convert CMAP handles into one of ours, for callbacks
+lazy_static! {
+    static ref TRACKHANDLE_HASH: Mutex<HashMap<u64, TrackHandle>> = Mutex::new(HashMap::new());
+    static ref HANDLE_HASH: Mutex<HashMap<u64, Handle>> = Mutex::new(HashMap::new());
+}
+
+/// Initialize a connection to the cmap subsystem.
+/// map specifies which cmap "map" to use.
+/// Returns a [Handle] into the cmap library
+pub fn initialize(map: Map) -> Result<Handle> {
+    let mut handle: ffi::cmap_handle_t = 0;
+    let c_map = match map {
+        Map::Icmap => ffi::CMAP_MAP_ICMAP,
+        Map::Stats => ffi::CMAP_MAP_STATS,
+    };
+
+    unsafe {
+        let res = ffi::cmap_initialize_map(&mut handle, c_map);
+        if res == ffi::CS_OK {
+            let rhandle = Handle {
+                cmap_handle: handle,
+            };
+            HANDLE_HASH.lock().unwrap().insert(handle, rhandle);
+            Ok(rhandle)
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+/// Finish with a connection to corosync.
+/// Takes a [Handle] as returned from [initialize]
+pub fn finalize(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::cmap_finalize(handle.cmap_handle) };
+    if res == ffi::CS_OK {
+        HANDLE_HASH.lock().unwrap().remove(&handle.cmap_handle);
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Return a file descriptor to use for poll/select on the CMAP handle.
+/// Takes a [Handle] as returned from [initialize],
+/// returns a C file descriptor as i32
+pub fn fd_get(handle: Handle) -> Result<i32> {
+    let c_fd: *mut c_int = &mut 0 as *mut _ as *mut c_int;
+    let res = unsafe { ffi::cmap_fd_get(handle.cmap_handle, c_fd) };
+    if res == ffi::CS_OK {
+        Ok(c_fd as i32)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Dispatch any/all active CMAP callbacks.
+/// Takes a [Handle] as returned from [initialize],
+/// flags [DispatchFlags] tells it how many items to dispatch before returning
+pub fn dispatch(handle: Handle, flags: DispatchFlags) -> Result<()> {
+    let res = unsafe { ffi::cmap_dispatch(handle.cmap_handle, flags as u32) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the current 'context' value for this handle
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source
+pub fn context_get(handle: Handle) -> Result<u64> {
+    let (res, context) = unsafe {
+        let mut context: u64 = 0;
+        let c_context: *mut c_void = &mut context as *mut _ as *mut c_void;
+        let r = ffi::cmap_context_get(handle.cmap_handle, c_context as *mut *const c_void);
+        (r, context)
+    };
+    if res == ffi::CS_OK {
+        Ok(context)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Set the current 'context' value for this handle
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source.
+/// Normally this is set in [initialize], but this allows it to be changed
+pub fn context_set(handle: Handle, context: u64) -> Result<()> {
+    let res = unsafe {
+        let c_context = context as *mut c_void;
+        ffi::cmap_context_set(handle.cmap_handle, c_context)
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// The type of data returned from [get] or in a
+/// tracker callback or iterator, part of the [Data] struct
+#[derive(Clone, Copy, Debug, Eq, PartialEq, TryFromPrimitive)]
+#[repr(u32)]
+pub enum DataType {
+    Int8 = ffi::CMAP_VALUETYPE_INT8,
+    UInt8 = ffi::CMAP_VALUETYPE_UINT8,
+    Int16 = ffi::CMAP_VALUETYPE_INT16,
+    UInt16 = ffi::CMAP_VALUETYPE_UINT16,
+    Int32 = ffi::CMAP_VALUETYPE_INT32,
+    UInt32 = ffi::CMAP_VALUETYPE_UINT32,
+    Int64 = ffi::CMAP_VALUETYPE_INT64,
+    UInt64 = ffi::CMAP_VALUETYPE_UINT64,
+    Float = ffi::CMAP_VALUETYPE_FLOAT,
+    Double = ffi::CMAP_VALUETYPE_DOUBLE,
+    String = ffi::CMAP_VALUETYPE_STRING,
+    Binary = ffi::CMAP_VALUETYPE_BINARY,
+    Unknown = 999,
+}
+
+fn cmap_to_enum(cmap_type: u32) -> DataType {
+    match DataType::try_from(cmap_type) {
+        Ok(e) => e,
+        Err(_) => DataType::Unknown,
+    }
+}
+
+/// Data returned from the cmap::get() call and tracker & iterators.
+/// Contains the data itself and the type of that data.
+pub enum Data {
+    Int8(i8),
+    UInt8(u8),
+    Int16(i16),
+    UInt16(u16),
+    Int32(i32),
+    UInt32(u32),
+    Int64(i64),
+    UInt64(u64),
+    Float(f32),
+    Double(f64),
+    String(String),
+    Binary(Vec<u8>),
+    Unknown,
+}
+
+impl fmt::Display for DataType {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            DataType::Int8 => write!(f, "Int8"),
+            DataType::UInt8 => write!(f, "UInt8"),
+            DataType::Int16 => write!(f, "Int16"),
+            DataType::UInt16 => write!(f, "UInt16"),
+            DataType::Int32 => write!(f, "Int32"),
+            DataType::UInt32 => write!(f, "UInt32"),
+            DataType::Int64 => write!(f, "Int64"),
+            DataType::UInt64 => write!(f, "UInt64"),
+            DataType::Float => write!(f, "Float"),
+            DataType::Double => write!(f, "Double"),
+            DataType::String => write!(f, "String"),
+            DataType::Binary => write!(f, "Binary"),
+            DataType::Unknown => write!(f, "Unknown"),
+        }
+    }
+}
+
+impl fmt::Display for Data {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Data::Int8(v) => write!(f, "{v} (Int8)"),
+            Data::UInt8(v) => write!(f, "{v} (UInt8)"),
+            Data::Int16(v) => write!(f, "{v} (Int16)"),
+            Data::UInt16(v) => write!(f, "{v} (UInt16)"),
+            Data::Int32(v) => write!(f, "{v} (Int32)"),
+            Data::UInt32(v) => write!(f, "{v} (UInt32)"),
+            Data::Int64(v) => write!(f, "{v} (Int64)"),
+            Data::UInt64(v) => write!(f, "{v} (UInt64)"),
+            Data::Float(v) => write!(f, "{v} (Float)"),
+            Data::Double(v) => write!(f, "{v} (Double)"),
+            Data::String(v) => write!(f, "{v} (String)"),
+            Data::Binary(v) => write!(f, "{v:?} (Binary)"),
+            Data::Unknown => write!(f, "Unknown)"),
+        }
+    }
+}
+
+const CMAP_KEYNAME_MAXLENGTH: usize = 255;
+fn string_to_cstring_validated(key: &str, maxlen: usize) -> Result<CString> {
+    if maxlen > 0 && key.chars().count() >= maxlen {
+        return Err(CsError::CsErrInvalidParam);
+    }
+
+    match CString::new(key) {
+        Ok(n) => Ok(n),
+        Err(_) => Err(CsError::CsErrLibrary),
+    }
+}
+
+fn set_value(
+    handle: Handle,
+    key_name: &str,
+    datatype: DataType,
+    value: *mut c_void,
+    length: usize,
+) -> Result<()> {
+    let csname = string_to_cstring_validated(key_name, CMAP_KEYNAME_MAXLENGTH)?;
+    let res = unsafe {
+        ffi::cmap_set(
+            handle.cmap_handle,
+            csname.as_ptr(),
+            value,
+            length,
+            datatype as u32,
+        )
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+// Returns type and size
+fn generic_to_cmap<T>(_value: T) -> (DataType, usize) {
+    match type_name::<T>() {
+        "u8" => (DataType::UInt8, 1),
+        "i8" => (DataType::Int8, 1),
+        "u16" => (DataType::UInt16, 2),
+        "i16" => (DataType::Int16, 2),
+        "u32" => (DataType::UInt32, 4),
+        "i32" => (DataType::Int32, 4),
+        "u64" => (DataType::UInt64, 4),
+        "f32" => (DataType::Float, 4),
+        "f64" => (DataType::Double, 8),
+        "&str" => (DataType::String, 0),
+        // Binary not currently supported here
+        _ => (DataType::Unknown, 0),
+    }
+}
+
+fn is_numeric_type(dtype: DataType) -> bool {
+    matches!(
+        dtype,
+        DataType::UInt8
+            | DataType::Int8
+            | DataType::UInt16
+            | DataType::Int16
+            | DataType::UInt32
+            | DataType::Int32
+            | DataType::UInt64
+            | DataType::Int64
+            | DataType::Float
+            | DataType::Double
+    )
+}
+
+/// Function to set a generic numeric value
+/// This doesn't work for strings or binaries
+pub fn set_number<T: Copy>(handle: Handle, key_name: &str, value: T) -> Result<()> {
+    let (c_type, c_size) = generic_to_cmap(value);
+
+    if is_numeric_type(c_type) {
+        let mut tmp = value;
+        let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+        set_value(handle, key_name, c_type, c_value as *mut c_void, c_size)
+    } else {
+        Err(CsError::CsErrNotSupported)
+    }
+}
+
+pub fn set_u8(handle: Handle, key_name: &str, value: u8) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(handle, key_name, DataType::UInt8, c_value as *mut c_void, 1)
+}
+
+/// Sets an i8 value into cmap
+pub fn set_i8(handle: Handle, key_name: &str, value: i8) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(handle, key_name, DataType::Int8, c_value as *mut c_void, 1)
+}
+
+/// Sets a u16 value into cmap
+pub fn set_u16(handle: Handle, key_name: &str, value: u16) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(
+        handle,
+        key_name,
+        DataType::UInt16,
+        c_value as *mut c_void,
+        2,
+    )
+}
+
+/// Sets an i16 value into cmap
+pub fn set_i16(handle: Handle, key_name: &str, value: i16) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(handle, key_name, DataType::Int16, c_value as *mut c_void, 2)
+}
+
+/// Sets a u32 value into cmap
+pub fn set_u32(handle: Handle, key_name: &str, value: u32) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(handle, key_name, DataType::UInt32, c_value, 4)
+}
+
+/// Sets an i32 value into cmap
+pub fn set_i132(handle: Handle, key_name: &str, value: i32) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(handle, key_name, DataType::Int32, c_value as *mut c_void, 4)
+}
+
+/// Sets a u64 value into cmap
+pub fn set_u64(handle: Handle, key_name: &str, value: u64) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(
+        handle,
+        key_name,
+        DataType::UInt64,
+        c_value as *mut c_void,
+        8,
+    )
+}
+
+/// Sets an i64 value into cmap
+pub fn set_i164(handle: Handle, key_name: &str, value: i64) -> Result<()> {
+    let mut tmp = value;
+    let c_value: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+    set_value(handle, key_name, DataType::Int64, c_value as *mut c_void, 8)
+}
+
+/// Sets a string value into cmap
+pub fn set_string(handle: Handle, key_name: &str, value: &str) -> Result<()> {
+    let v_string = string_to_cstring_validated(value, 0)?;
+    set_value(
+        handle,
+        key_name,
+        DataType::String,
+        v_string.as_ptr() as *mut c_void,
+        value.chars().count(),
+    )
+}
+
+/// Sets a binary value into cmap
+pub fn set_binary(handle: Handle, key_name: &str, value: &[u8]) -> Result<()> {
+    set_value(
+        handle,
+        key_name,
+        DataType::Binary,
+        value.as_ptr() as *mut c_void,
+        value.len(),
+    )
+}
+
+/// Sets a [Data] type into cmap
+pub fn set(handle: Handle, key_name: &str, data: &Data) -> Result<()> {
+    let (datatype, datalen, c_value) = match data {
+        Data::Int8(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::Int8, 1, cv)
+        }
+        Data::UInt8(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::UInt8, 1, cv)
+        }
+        Data::Int16(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::Int16, 2, cv)
+        }
+        Data::UInt16(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::UInt8, 2, cv)
+        }
+        Data::Int32(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::Int32, 4, cv)
+        }
+        Data::UInt32(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::UInt32, 4, cv)
+        }
+        Data::Int64(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::Int64, 8, cv)
+        }
+        Data::UInt64(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::UInt64, 8, cv)
+        }
+        Data::Float(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::Float, 4, cv)
+        }
+        Data::Double(v) => {
+            let mut tmp = *v;
+            let cv: *mut c_void = &mut tmp as *mut _ as *mut c_void;
+            (DataType::Double, 8, cv)
+        }
+        Data::String(v) => {
+            let cv = string_to_cstring_validated(v, 0)?;
+            // Can't let cv go out of scope
+            return set_value(
+                handle,
+                key_name,
+                DataType::String,
+                cv.as_ptr() as *mut c_void,
+                v.chars().count(),
+            );
+        }
+        Data::Binary(v) => {
+            // Vec doesn't return quite the right types.
+            return set_value(
+                handle,
+                key_name,
+                DataType::Binary,
+                v.as_ptr() as *mut c_void,
+                v.len(),
+            );
+        }
+        Data::Unknown => return Err(CsError::CsErrInvalidParam),
+    };
+
+    set_value(handle, key_name, datatype, c_value, datalen)
+}
+
+// Local function to parse out values from the C mess
+// Assumes the c_value is complete. So cmap::get() will need to check the size
+//   and re-get before calling us with a resized buffer
+fn c_to_data(value_size: usize, c_key_type: u32, c_value: *const u8) -> Result<Data> {
+    unsafe {
+        match cmap_to_enum(c_key_type) {
+            DataType::UInt8 => {
+                let mut ints = [0u8; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr(), value_size);
+                Ok(Data::UInt8(ints[0]))
+            }
+            DataType::Int8 => {
+                let mut ints = [0i8; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::Int8(ints[0]))
+            }
+            DataType::UInt16 => {
+                let mut ints = [0u16; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::UInt16(ints[0]))
+            }
+            DataType::Int16 => {
+                let mut ints = [0i16; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::Int16(ints[0]))
+            }
+            DataType::UInt32 => {
+                let mut ints = [0u32; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::UInt32(ints[0]))
+            }
+            DataType::Int32 => {
+                let mut ints = [0i32; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::Int32(ints[0]))
+            }
+            DataType::UInt64 => {
+                let mut ints = [0u64; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::UInt64(ints[0]))
+            }
+            DataType::Int64 => {
+                let mut ints = [0i64; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::Int64(ints[0]))
+            }
+            DataType::Float => {
+                let mut ints = [0f32; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::Float(ints[0]))
+            }
+            DataType::Double => {
+                let mut ints = [0f64; 1];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr() as *mut u8, value_size);
+                Ok(Data::Double(ints[0]))
+            }
+            DataType::String => {
+                let mut ints = vec![0u8; value_size];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr(), value_size);
+                // -1 here so CString doesn't see the NUL
+                let cs = match CString::new(&ints[0..value_size - 1_usize]) {
+                    Ok(c1) => c1,
+                    Err(_) => return Err(CsError::CsErrLibrary),
+                };
+                match cs.into_string() {
+                    Ok(s) => Ok(Data::String(s)),
+                    Err(_) => Err(CsError::CsErrLibrary),
+                }
+            }
+            DataType::Binary => {
+                let mut ints = vec![0u8; value_size];
+                copy_nonoverlapping(c_value as *mut u8, ints.as_mut_ptr(), value_size);
+                Ok(Data::Binary(ints))
+            }
+            DataType::Unknown => Ok(Data::Unknown),
+        }
+    }
+}
+
+const INITIAL_SIZE: usize = 256;
+
+/// Get a value from cmap, returned as a [Data] struct, so could be anything
+pub fn get(handle: Handle, key_name: &str) -> Result<Data> {
+    let csname = string_to_cstring_validated(key_name, CMAP_KEYNAME_MAXLENGTH)?;
+    let mut value_size: usize = 16;
+    let mut c_key_type: u32 = 0;
+
+    // First guess at a size for Strings and Binaries. Expand if needed
+    let mut c_value = vec![0u8; INITIAL_SIZE];
+
+    unsafe {
+        let res = ffi::cmap_get(
+            handle.cmap_handle,
+            csname.as_ptr(),
+            c_value.as_mut_ptr() as *mut c_void,
+            &mut value_size,
+            &mut c_key_type,
+        );
+        if res == ffi::CS_OK {
+            if value_size > INITIAL_SIZE {
+                // Need to try again with a bigger buffer
+                c_value.resize(value_size, 0u8);
+                let res2 = ffi::cmap_get(
+                    handle.cmap_handle,
+                    csname.as_ptr(),
+                    c_value.as_mut_ptr() as *mut c_void,
+                    &mut value_size,
+                    &mut c_key_type,
+                );
+                if res2 != ffi::CS_OK {
+                    return Err(CsError::from_c(res2));
+                }
+            }
+
+            // Convert to Rust type and return as a Data enum
+            c_to_data(value_size, c_key_type, c_value.as_ptr())
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+/// increment the value in a cmap key (must be a numeric type)
+pub fn inc(handle: Handle, key_name: &str) -> Result<()> {
+    let csname = string_to_cstring_validated(key_name, CMAP_KEYNAME_MAXLENGTH)?;
+    let res = unsafe { ffi::cmap_inc(handle.cmap_handle, csname.as_ptr()) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// decrement the value in a cmap key (must be a numeric type)
+pub fn dec(handle: Handle, key_name: &str) -> Result<()> {
+    let csname = string_to_cstring_validated(key_name, CMAP_KEYNAME_MAXLENGTH)?;
+    let res = unsafe { ffi::cmap_dec(handle.cmap_handle, csname.as_ptr()) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+// Callback for CMAP notify events from corosync, convert params to Rust and pass on.
+extern "C" fn rust_notify_fn(
+    cmap_handle: ffi::cmap_handle_t,
+    cmap_track_handle: ffi::cmap_track_handle_t,
+    event: i32,
+    key_name: *const ::std::os::raw::c_char,
+    new_value: ffi::cmap_notify_value,
+    old_value: ffi::cmap_notify_value,
+    user_data: *mut ::std::os::raw::c_void,
+) {
+    // If cmap_handle doesn't match then throw away the callback.
+    if let Some(r_cmap_handle) = HANDLE_HASH.lock().unwrap().get(&cmap_handle) {
+        if let Some(h) = TRACKHANDLE_HASH.lock().unwrap().get(&cmap_track_handle) {
+            let r_keyname = match string_from_bytes(key_name, CMAP_KEYNAME_MAXLENGTH) {
+                Ok(s) => s,
+                Err(_) => return,
+            };
+
+            let r_old = match c_to_data(old_value.len, old_value.type_, old_value.data as *const u8)
+            {
+                Ok(v) => v,
+                Err(_) => return,
+            };
+            let r_new = match c_to_data(new_value.len, new_value.type_, new_value.data as *const u8)
+            {
+                Ok(v) => v,
+                Err(_) => return,
+            };
+
+            if let Some(cb) = h.notify_callback.notify_fn {
+                (cb)(
+                    r_cmap_handle,
+                    h,
+                    TrackType { bits: event },
+                    &r_keyname,
+                    &r_old,
+                    &r_new,
+                    user_data as u64,
+                );
+            }
+        }
+    }
+}
+
+/// Callback function called every time a tracker reports a change in a tracked value
+#[derive(Copy, Clone)]
+pub struct NotifyCallback {
+    pub notify_fn: Option<
+        fn(
+            handle: &Handle,
+            track_handle: &TrackHandle,
+            event: TrackType,
+            key_name: &str,
+            new_value: &Data,
+            old_value: &Data,
+            user_data: u64,
+        ),
+    >,
+}
+
+/// Track changes in cmap values, multiple [TrackHandle]s per [Handle] are allowed
+pub fn track_add(
+    handle: Handle,
+    key_name: &str,
+    track_type: TrackType,
+    notify_callback: &NotifyCallback,
+    user_data: u64,
+) -> Result<TrackHandle> {
+    let c_name = string_to_cstring_validated(key_name, CMAP_KEYNAME_MAXLENGTH)?;
+    let mut c_trackhandle = 0u64;
+    let res = unsafe {
+        ffi::cmap_track_add(
+            handle.cmap_handle,
+            c_name.as_ptr(),
+            track_type.bits,
+            Some(rust_notify_fn),
+            user_data as *mut c_void,
+            &mut c_trackhandle,
+        )
+    };
+    if res == ffi::CS_OK {
+        let rhandle = TrackHandle {
+            track_handle: c_trackhandle,
+            notify_callback: *notify_callback,
+        };
+        TRACKHANDLE_HASH
+            .lock()
+            .unwrap()
+            .insert(c_trackhandle, rhandle);
+        Ok(rhandle)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Remove a tracker frm this [Handle]
+pub fn track_delete(handle: Handle, track_handle: TrackHandle) -> Result<()> {
+    let res = unsafe { ffi::cmap_track_delete(handle.cmap_handle, track_handle.track_handle) };
+    if res == ffi::CS_OK {
+        TRACKHANDLE_HASH
+            .lock()
+            .unwrap()
+            .remove(&track_handle.track_handle);
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Create one of these to start iterating over cmap values.
+pub struct CmapIterStart {
+    iter_handle: u64,
+    cmap_handle: u64,
+}
+
+pub struct CmapIntoIter {
+    cmap_handle: u64,
+    iter_handle: u64,
+}
+
+/// Value returned from the iterator. contains the key name and the [Data]
+pub struct CmapIter {
+    key_name: String,
+    data: Data,
+}
+
+impl CmapIter {
+    pub fn key_name(&self) -> &str {
+        &self.key_name
+    }
+    pub fn data(&self) -> &Data {
+        &self.data
+    }
+}
+
+impl fmt::Debug for CmapIter {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}: {}", self.key_name, self.data)
+    }
+}
+
+impl Iterator for CmapIntoIter {
+    type Item = CmapIter;
+
+    fn next(&mut self) -> Option<CmapIter> {
+        let mut c_key_name = [0u8; CMAP_KEYNAME_MAXLENGTH + 1];
+        let mut c_value_len = 0usize;
+        let mut c_value_type = 0u32;
+        let res = unsafe {
+            ffi::cmap_iter_next(
+                self.cmap_handle,
+                self.iter_handle,
+                c_key_name.as_mut_ptr() as *mut c_char,
+                &mut c_value_len,
+                &mut c_value_type,
+            )
+        };
+        if res == ffi::CS_OK {
+            // Return the Data for this iteration
+            let mut c_value = vec![0u8; c_value_len];
+            let res = unsafe {
+                ffi::cmap_get(
+                    self.cmap_handle,
+                    c_key_name.as_ptr() as *mut c_char,
+                    c_value.as_mut_ptr() as *mut c_void,
+                    &mut c_value_len,
+                    &mut c_value_type,
+                )
+            };
+            if res == ffi::CS_OK {
+                match c_to_data(c_value_len, c_value_type, c_value.as_ptr()) {
+                    Ok(d) => {
+                        let r_keyname = match string_from_bytes(
+                            c_key_name.as_ptr() as *mut c_char,
+                            CMAP_KEYNAME_MAXLENGTH,
+                        ) {
+                            Ok(s) => s,
+                            Err(_) => return None,
+                        };
+                        Some(CmapIter {
+                            key_name: r_keyname,
+                            data: d,
+                        })
+                    }
+                    Err(_) => None,
+                }
+            } else {
+                // cmap_get returned error
+                None
+            }
+        } else if res == ffi::CS_ERR_NO_SECTIONS {
+            // End of list
+            unsafe {
+                // Yeah, we don't check this return code. There's nowhere to report it.
+                ffi::cmap_iter_finalize(self.cmap_handle, self.iter_handle)
+            };
+            None
+        } else {
+            None
+        }
+    }
+}
+
+impl CmapIterStart {
+    /// Create a new [CmapIterStart] object for iterating over a list of cmap keys
+    pub fn new(cmap_handle: Handle, prefix: &str) -> Result<CmapIterStart> {
+        let mut iter_handle: u64 = 0;
+        let res = unsafe {
+            let c_prefix = string_to_cstring_validated(prefix, CMAP_KEYNAME_MAXLENGTH)?;
+            ffi::cmap_iter_init(cmap_handle.cmap_handle, c_prefix.as_ptr(), &mut iter_handle)
+        };
+        if res == ffi::CS_OK {
+            Ok(CmapIterStart {
+                cmap_handle: cmap_handle.cmap_handle,
+                iter_handle,
+            })
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+impl IntoIterator for CmapIterStart {
+    type Item = CmapIter;
+    type IntoIter = CmapIntoIter;
+
+    fn into_iter(self) -> Self::IntoIter {
+        CmapIntoIter {
+            iter_handle: self.iter_handle,
+            cmap_handle: self.cmap_handle,
+        }
+    }
+}
diff --git a/bindings/rust/src/cpg.rs b/bindings/rust/src/cpg.rs
new file mode 100644
index 0000000..1246497
--- /dev/null
+++ b/bindings/rust/src/cpg.rs
@@ -0,0 +1,628 @@
+// libcpg interface for Rust
+// Copyright (c) 2020 Red Hat, Inc.
+//
+// All rights reserved.
+//
+// Author: Christine Caulfield (ccaulfi@redhat.com)
+//
+
+#![allow(clippy::single_match)]
+#![allow(clippy::needless_range_loop)]
+#![allow(clippy::type_complexity)]
+
+// For the code generated by bindgen
+use crate::sys::cpg as ffi;
+
+use std::collections::HashMap;
+use std::ffi::{CStr, CString};
+use std::fmt;
+use std::os::raw::{c_int, c_void};
+use std::ptr::copy_nonoverlapping;
+use std::slice;
+use std::string::String;
+use std::sync::Mutex;
+
+// General corosync things
+use crate::string_from_bytes;
+use crate::{CsError, DispatchFlags, NodeId, Result};
+
+const CPG_NAMELEN_MAX: usize = 128;
+const CPG_MEMBERS_MAX: usize = 128;
+
+/// RingId returned by totem_confchg_fn
+#[derive(Copy, Clone)]
+pub struct RingId {
+    pub nodeid: NodeId,
+    pub seq: u64,
+}
+
+/// Totem delivery guarantee options for [mcast_joined]
+// The C enum doesn't have numbers in the code
+// so don't assume we can match them
+#[derive(Copy, Clone)]
+pub enum Guarantee {
+    TypeUnordered,
+    TypeFifo,
+    TypeAgreed,
+    TypeSafe,
+}
+
+// Convert internal to cpg.h values.
+impl Guarantee {
+    pub fn to_c(&self) -> u32 {
+        match self {
+            Guarantee::TypeUnordered => ffi::CPG_TYPE_UNORDERED,
+            Guarantee::TypeFifo => ffi::CPG_TYPE_FIFO,
+            Guarantee::TypeAgreed => ffi::CPG_TYPE_AGREED,
+            Guarantee::TypeSafe => ffi::CPG_TYPE_SAFE,
+        }
+    }
+}
+
+/// Flow control state returned from [flow_control_state_get]
+#[derive(Copy, Clone)]
+pub enum FlowControlState {
+    Disabled,
+    Enabled,
+}
+
+/// No flags current specified for model1 so leave this at None
+#[derive(Copy, Clone)]
+pub enum Model1Flags {
+    None,
+}
+
+/// Reason for cpg item callback
+#[derive(Copy, Clone)]
+pub enum Reason {
+    Undefined = 0,
+    Join = 1,
+    Leave = 2,
+    NodeDown = 3,
+    NodeUp = 4,
+    ProcDown = 5,
+}
+
+// Convert to cpg.h values
+impl Reason {
+    pub fn new(r: u32) -> Reason {
+        match r {
+            0 => Reason::Undefined,
+            1 => Reason::Join,
+            2 => Reason::Leave,
+            3 => Reason::NodeDown,
+            4 => Reason::NodeUp,
+            5 => Reason::ProcDown,
+            _ => Reason::Undefined,
+        }
+    }
+}
+impl fmt::Display for Reason {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Reason::Undefined => write!(f, "Undefined"),
+            Reason::Join => write!(f, "Join"),
+            Reason::Leave => write!(f, "Leave"),
+            Reason::NodeDown => write!(f, "NodeDown"),
+            Reason::NodeUp => write!(f, "NodeUp"),
+            Reason::ProcDown => write!(f, "ProcDown"),
+        }
+    }
+}
+
+/// A CPG address entry returned in the callbacks
+pub struct Address {
+    pub nodeid: NodeId,
+    pub pid: u32,
+    pub reason: Reason,
+}
+impl fmt::Debug for Address {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "[nodeid: {}, pid: {}, reason: {}]",
+            self.nodeid, self.pid, self.reason
+        )
+    }
+}
+
+/// Data for model1 [initialize]
+#[derive(Copy, Clone)]
+pub struct Model1Data {
+    pub flags: Model1Flags,
+    pub deliver_fn: Option<
+        fn(
+            handle: &Handle,
+            group_name: String,
+            nodeid: NodeId,
+            pid: u32,
+            msg: &[u8],
+            msg_len: usize,
+        ),
+    >,
+    pub confchg_fn: Option<
+        fn(
+            handle: &Handle,
+            group_name: &str,
+            member_list: Vec<Address>,
+            left_list: Vec<Address>,
+            joined_list: Vec<Address>,
+        ),
+    >,
+    pub totem_confchg_fn: Option<fn(handle: &Handle, ring_id: RingId, member_list: Vec<NodeId>)>,
+}
+
+/// Modeldata for [initialize], only v1 supported at the moment
+#[derive(Copy, Clone)]
+pub enum ModelData {
+    ModelNone,
+    ModelV1(Model1Data),
+}
+
+/// A handle into the cpg library. Returned from [initialize] and needed for all other calls
+#[derive(Copy, Clone)]
+pub struct Handle {
+    cpg_handle: u64, // Corosync library handle
+    model_data: ModelData,
+}
+
+// Used to convert a CPG handle into one of ours
+lazy_static! {
+    static ref HANDLE_HASH: Mutex<HashMap<u64, Handle>> = Mutex::new(HashMap::new());
+}
+
+// Convert a Rust String into a cpg_name struct for libcpg
+fn string_to_cpg_name(group: &str) -> Result<ffi::cpg_name> {
+    if group.len() > CPG_NAMELEN_MAX - 1 {
+        return Err(CsError::CsErrInvalidParam);
+    }
+
+    let c_name = match CString::new(group) {
+        Ok(n) => n,
+        Err(_) => return Err(CsError::CsErrLibrary),
+    };
+    let mut c_group = ffi::cpg_name {
+        length: group.len() as u32,
+        value: [0; CPG_NAMELEN_MAX],
+    };
+
+    unsafe {
+        // NOTE param order is 'wrong-way round' from C
+        copy_nonoverlapping(c_name.as_ptr(), c_group.value.as_mut_ptr(), group.len());
+    }
+
+    Ok(c_group)
+}
+
+// Convert an array of cpg_addresses to a Vec<cpg::Address> - used in callbacks
+fn cpg_array_to_vec(list: *const ffi::cpg_address, list_entries: usize) -> Vec<Address> {
+    let temp: &[ffi::cpg_address] = unsafe { slice::from_raw_parts(list, list_entries) };
+    let mut r_vec = Vec::<Address>::new();
+
+    for i in 0..list_entries {
+        let a: Address = Address {
+            nodeid: NodeId::from(temp[i].nodeid),
+            pid: temp[i].pid,
+            reason: Reason::new(temp[i].reason),
+        };
+        r_vec.push(a);
+    }
+    r_vec
+}
+
+// Called from CPG callback function - munge params back to Rust from C
+extern "C" fn rust_deliver_fn(
+    handle: ffi::cpg_handle_t,
+    group_name: *const ffi::cpg_name,
+    nodeid: u32,
+    pid: u32,
+    msg: *mut ::std::os::raw::c_void,
+    msg_len: usize,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        // Convert group_name into a Rust str.
+        let r_group_name = unsafe {
+            CStr::from_ptr(&(*group_name).value[0])
+                .to_string_lossy()
+                .into_owned()
+        };
+
+        let data: &[u8] = unsafe { std::slice::from_raw_parts(msg as *const u8, msg_len) };
+
+        match h.model_data {
+            ModelData::ModelV1(md) => {
+                if let Some(cb) = md.deliver_fn {
+                    (cb)(h, r_group_name, NodeId::from(nodeid), pid, data, msg_len);
+                }
+            }
+            _ => {}
+        }
+    }
+}
+
+// Called from CPG callback function - munge params back to Rust from C
+extern "C" fn rust_confchg_fn(
+    handle: ffi::cpg_handle_t,
+    group_name: *const ffi::cpg_name,
+    member_list: *const ffi::cpg_address,
+    member_list_entries: usize,
+    left_list: *const ffi::cpg_address,
+    left_list_entries: usize,
+    joined_list: *const ffi::cpg_address,
+    joined_list_entries: usize,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        let r_group_name = unsafe {
+            CStr::from_ptr(&(*group_name).value[0])
+                .to_string_lossy()
+                .into_owned()
+        };
+        let r_member_list = cpg_array_to_vec(member_list, member_list_entries);
+        let r_left_list = cpg_array_to_vec(left_list, left_list_entries);
+        let r_joined_list = cpg_array_to_vec(joined_list, joined_list_entries);
+
+        match h.model_data {
+            ModelData::ModelV1(md) => {
+                if let Some(cb) = md.confchg_fn {
+                    (cb)(h, &r_group_name, r_member_list, r_left_list, r_joined_list);
+                }
+            }
+            _ => {}
+        }
+    }
+}
+
+// Called from CPG callback function - munge params back to Rust from C
+extern "C" fn rust_totem_confchg_fn(
+    handle: ffi::cpg_handle_t,
+    ring_id: ffi::cpg_ring_id,
+    member_list_entries: u32,
+    member_list: *const u32,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        let r_ring_id = RingId {
+            nodeid: NodeId::from(ring_id.nodeid),
+            seq: ring_id.seq,
+        };
+        let mut r_member_list = Vec::<NodeId>::new();
+        let temp_members: &[u32] =
+            unsafe { slice::from_raw_parts(member_list, member_list_entries as usize) };
+        for i in 0..member_list_entries as usize {
+            r_member_list.push(NodeId::from(temp_members[i]));
+        }
+
+        match h.model_data {
+            ModelData::ModelV1(md) => {
+                if let Some(cb) = md.totem_confchg_fn {
+                    (cb)(h, r_ring_id, r_member_list);
+                }
+            }
+            _ => {}
+        }
+    }
+}
+
+/// Initialize a connection to the cpg library. You must call this before doing anything
+/// else and use the passed back [Handle].
+/// Remember to free the handle using [finalize] when finished.
+pub fn initialize(model_data: &ModelData, context: u64) -> Result<Handle> {
+    let mut handle: ffi::cpg_handle_t = 0;
+    let mut m = match model_data {
+        ModelData::ModelV1(_v1) => {
+            ffi::cpg_model_v1_data_t {
+                model: ffi::CPG_MODEL_V1,
+                cpg_deliver_fn: Some(rust_deliver_fn),
+                cpg_confchg_fn: Some(rust_confchg_fn),
+                cpg_totem_confchg_fn: Some(rust_totem_confchg_fn),
+                flags: 0, // No supported flags (yet)
+            }
+        }
+        _ => return Err(CsError::CsErrInvalidParam),
+    };
+
+    unsafe {
+        let c_context: *mut c_void = &mut &context as *mut _ as *mut c_void;
+        let c_model: *mut ffi::cpg_model_data_t = &mut m as *mut _ as *mut ffi::cpg_model_data_t;
+        let res = ffi::cpg_model_initialize(&mut handle, m.model, c_model, c_context);
+
+        if res == ffi::CS_OK {
+            let rhandle = Handle {
+                cpg_handle: handle,
+                model_data: *model_data,
+            };
+            HANDLE_HASH.lock().unwrap().insert(handle, rhandle);
+            Ok(rhandle)
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+/// Finish with a connection to corosync
+pub fn finalize(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::cpg_finalize(handle.cpg_handle) };
+    if res == ffi::CS_OK {
+        HANDLE_HASH.lock().unwrap().remove(&handle.cpg_handle);
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+// Not sure if an FD is the right thing to return here, but it will do for now.
+/// Returns a file descriptor to use for poll/select on the CPG handle
+pub fn fd_get(handle: Handle) -> Result<i32> {
+    let c_fd: *mut c_int = &mut 0 as *mut _ as *mut c_int;
+    let res = unsafe { ffi::cpg_fd_get(handle.cpg_handle, c_fd) };
+    if res == ffi::CS_OK {
+        Ok(c_fd as i32)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Call any/all active CPG callbacks for this [Handle] see [DispatchFlags] for details
+pub fn dispatch(handle: Handle, flags: DispatchFlags) -> Result<()> {
+    let res = unsafe { ffi::cpg_dispatch(handle.cpg_handle, flags as u32) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Joins a CPG group for sending and receiving messages
+pub fn join(handle: Handle, group: &str) -> Result<()> {
+    let res = unsafe {
+        let c_group = string_to_cpg_name(group)?;
+        ffi::cpg_join(handle.cpg_handle, &c_group)
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Leave the currently joined CPG group, another group can now be joined on
+/// the same [Handle] or [finalize] can be called to finish using CPG
+pub fn leave(handle: Handle, group: &str) -> Result<()> {
+    let res = unsafe {
+        let c_group = string_to_cpg_name(group)?;
+        ffi::cpg_leave(handle.cpg_handle, &c_group)
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the local node ID
+pub fn local_get(handle: Handle) -> Result<NodeId> {
+    let mut nodeid: u32 = 0;
+    let res = unsafe { ffi::cpg_local_get(handle.cpg_handle, &mut nodeid) };
+    if res == ffi::CS_OK {
+        Ok(NodeId::from(nodeid))
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get a list of members of a CPG group as a vector of [Address] structs
+pub fn membership_get(handle: Handle, group: &str) -> Result<Vec<Address>> {
+    let mut member_list_entries: i32 = 0;
+    let member_list = [ffi::cpg_address {
+        nodeid: 0,
+        pid: 0,
+        reason: 0,
+    }; CPG_MEMBERS_MAX];
+    let res = unsafe {
+        let mut c_group = string_to_cpg_name(group)?;
+        let c_memlist = member_list.as_ptr() as *mut ffi::cpg_address;
+        ffi::cpg_membership_get(
+            handle.cpg_handle,
+            &mut c_group,
+            &mut *c_memlist,
+            &mut member_list_entries,
+        )
+    };
+    if res == ffi::CS_OK {
+        Ok(cpg_array_to_vec(
+            member_list.as_ptr(),
+            member_list_entries as usize,
+        ))
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the maximum size that CPG can send in one corosync message,
+/// any messages sent via [mcast_joined] that are larger than this
+/// will be fragmented
+pub fn max_atomic_msgsize_get(handle: Handle) -> Result<u32> {
+    let mut asize: u32 = 0;
+    let res = unsafe { ffi::cpg_max_atomic_msgsize_get(handle.cpg_handle, &mut asize) };
+    if res == ffi::CS_OK {
+        Ok(asize)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the current 'context' value for this handle.
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source
+pub fn context_get(handle: Handle) -> Result<u64> {
+    let mut c_context: *mut c_void = &mut 0u64 as *mut _ as *mut c_void;
+    let (res, context) = unsafe {
+        let r = ffi::cpg_context_get(handle.cpg_handle, &mut c_context);
+        let context: u64 = c_context as u64;
+        (r, context)
+    };
+    if res == ffi::CS_OK {
+        Ok(context)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Set the current 'context' value for this handle.
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source.
+/// Normally this is set in [initialize], but this allows it to be changed
+pub fn context_set(handle: Handle, context: u64) -> Result<()> {
+    let res = unsafe {
+        let c_context = context as *mut c_void;
+        ffi::cpg_context_set(handle.cpg_handle, c_context)
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the flow control state of corosync CPG
+pub fn flow_control_state_get(handle: Handle) -> Result<bool> {
+    let mut fc_state: u32 = 0;
+    let res = unsafe { ffi::cpg_flow_control_state_get(handle.cpg_handle, &mut fc_state) };
+    if res == ffi::CS_OK {
+        if fc_state == 1 {
+            Ok(true)
+        } else {
+            Ok(false)
+        }
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Send a message to the currently joined CPG group
+pub fn mcast_joined(handle: Handle, guarantee: Guarantee, msg: &[u8]) -> Result<()> {
+    let c_iovec = ffi::iovec {
+        iov_base: msg.as_ptr() as *mut c_void,
+        iov_len: msg.len(),
+    };
+    let res = unsafe { ffi::cpg_mcast_joined(handle.cpg_handle, guarantee.to_c(), &c_iovec, 1) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Type of iteration for [CpgIterStart]
+#[derive(Copy, Clone)]
+pub enum CpgIterType {
+    NameOnly = 1,
+    OneGroup = 2,
+    All = 3,
+}
+
+// Iterator based on information on this page. thank you!
+// https://stackoverflow.com/questions/30218886/how-to-implement-iterator-and-intoiterator-for-a-simple-struct
+// Object to iterate over
+/// An object to iterate over a list of CPG groups, create one of these and then use 'for' over it
+pub struct CpgIterStart {
+    iter_handle: u64,
+}
+
+/// struct returned from iterating over a [CpgIterStart]
+pub struct CpgIter {
+    pub group: String,
+    pub nodeid: NodeId,
+    pub pid: u32,
+}
+
+pub struct CpgIntoIter {
+    iter_handle: u64,
+}
+
+impl fmt::Debug for CpgIter {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "[group: {}, nodeid: {}, pid: {}]",
+            self.group, self.nodeid, self.pid
+        )
+    }
+}
+
+impl Iterator for CpgIntoIter {
+    type Item = CpgIter;
+
+    fn next(&mut self) -> Option<CpgIter> {
+        let mut c_iter_description = ffi::cpg_iteration_description_t {
+            nodeid: 0,
+            pid: 0,
+            group: ffi::cpg_name {
+                length: 0_u32,
+                value: [0; CPG_NAMELEN_MAX],
+            },
+        };
+        let res = unsafe { ffi::cpg_iteration_next(self.iter_handle, &mut c_iter_description) };
+
+        if res == ffi::CS_OK {
+            let r_group =
+                match string_from_bytes(c_iter_description.group.value.as_ptr(), CPG_NAMELEN_MAX) {
+                    Ok(groupname) => groupname,
+                    Err(_) => return None,
+                };
+            Some(CpgIter {
+                group: r_group,
+                nodeid: NodeId::from(c_iter_description.nodeid),
+                pid: c_iter_description.pid,
+            })
+        } else if res == ffi::CS_ERR_NO_SECTIONS {
+            // End of list
+            unsafe {
+                // Yeah, we don't check this return code. There's nowhere to report it.
+                ffi::cpg_iteration_finalize(self.iter_handle)
+            };
+            None
+        } else {
+            None
+        }
+    }
+}
+
+impl CpgIterStart {
+    /// Create a new [CpgIterStart] object for iterating over a list of active CPG groups
+    pub fn new(cpg_handle: Handle, group: &str, iter_type: CpgIterType) -> Result<CpgIterStart> {
+        let mut iter_handle: u64 = 0;
+        let res = unsafe {
+            let mut c_group = string_to_cpg_name(group)?;
+            let c_itertype = iter_type as u32;
+            // IterType 'All' requires that the group pointer is passed in as NULL
+            let c_group_ptr = {
+                match iter_type {
+                    CpgIterType::All => std::ptr::null_mut(),
+                    _ => &mut c_group,
+                }
+            };
+            ffi::cpg_iteration_initialize(
+                cpg_handle.cpg_handle,
+                c_itertype,
+                c_group_ptr,
+                &mut iter_handle,
+            )
+        };
+        if res == ffi::CS_OK {
+            Ok(CpgIterStart { iter_handle })
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+impl IntoIterator for CpgIterStart {
+    type Item = CpgIter;
+    type IntoIter = CpgIntoIter;
+
+    fn into_iter(self) -> Self::IntoIter {
+        CpgIntoIter {
+            iter_handle: self.iter_handle,
+        }
+    }
+}
diff --git a/bindings/rust/src/lib.rs b/bindings/rust/src/lib.rs
new file mode 100644
index 0000000..dbf34fc
--- /dev/null
+++ b/bindings/rust/src/lib.rs
@@ -0,0 +1,296 @@
+//! This crate provides access to the corosync libraries cpg, cfg, cmap, quorum & votequorum
+//! from Rust. They are a fairly thin layer around the actual API calls but with Rust data types
+//! and iterators.
+//!
+//! Corosync is a low-level provider of cluster services for high-availability clusters,
+//! for more information about corosync see <https://corosync.github.io/corosync/>
+//!
+//! No more information about corosync itself will be provided here, it is expected that if
+//! you feel you need access to the Corosync API calls, you know what they do :)
+//!
+//! # Example
+//! ```
+//! extern crate rust_corosync as corosync;
+//! use corosync::cmap;
+//!
+//! fn main()
+//! {
+//!     // Open connection to corosync libcmap
+//!     let handle =
+//!     match cmap::initialize(cmap::Map::Icmap) {
+//!         Ok(h) => {
+//!             println!("cmap initialized.");
+//!             h
+//!         }
+//!         Err(e) => {
+//!             println!("Error in CMAP (Icmap) init: {}", e);
+//!             return;
+//!         }
+//!     };
+//!
+//!     // Set a numeric value (this is a generic fn)
+//!     match cmap::set_number(handle, "test.test_uint32", 456)
+//!     {
+//!         Ok(_) => {}
+//!         Err(e) => {
+//!             println!("Error in CMAP set_u32: {}", e);
+//!             return;
+//!         }
+//!     };
+//!
+//!     // Get a value - this will be a Data struct
+//!     match cmap::get(handle, "test.test_uint32")
+//!     {
+//!         Ok(v) => {
+//!             println!("GOT value {}", v);
+//!         }
+//!         Err(e) => {
+//!             println!("Error in CMAP get: {}", e);
+//!             return;
+//!         }
+//!     };
+//!
+//!     // Use an iterator
+//!     match cmap::CmapIterStart::new(handle, "totem.") {
+//!         Ok(cmap_iter) => {
+//!             for i in cmap_iter {
+//!                 println!("ITER: {:?}", i);
+//!             }
+//!             println!("");
+//!         }
+//!         Err(e) => {
+//!             println!("Error in CMAP iter start: {}", e);
+//!         }
+//!     }
+//!
+//!     // Close this connection
+//!     match cmap::finalize(handle)
+//!     {
+//!         Ok(_) => {}
+//!         Err(e) => {
+//!             println!("Error in CMAP get: {}", e);
+//!             return;
+//!         }
+//!     };
+//! }
+
+#[macro_use]
+extern crate lazy_static;
+#[macro_use]
+extern crate bitflags;
+
+/// cfg is the internal configuration and information library for corosync, it is
+/// mainly used by internal tools but may also contain API calls useful to some applications
+/// that need detailed information about or control of the operation of corosync and the cluster.
+pub mod cfg;
+/// cmap is the internal 'database' of corosync - though it is NOT replicated. Mostly it contains
+/// a copy of the corosync.conf file and information about the running state of the daemon.
+/// The cmap API provides two 'maps'. Icmap, which is as above, and Stats, which contains very detailed
+/// statistics on the running system, this includes network and IPC calls.
+pub mod cmap;
+/// cpg is the Control Process Groups subsystem of corosync and is usually used for sending
+/// messages around the cluster. All processes using CPG belong to a named group (whose members
+/// they can query) and all messages are sent with delivery guarantees.
+pub mod cpg;
+/// Quorum provides basic information about the quorate state of the cluster with callbacks
+/// when nodelists change.
+pub mod quorum;
+///votequorum is the main quorum provider for corosync, using this API, users can query the state
+/// of nodes in the cluster, request callbacks when the nodelists change, and set up a quorum device.
+pub mod votequorum;
+
+mod sys;
+
+use num_enum::TryFromPrimitive;
+use std::convert::TryFrom;
+use std::error::Error;
+use std::ffi::CString;
+use std::fmt;
+use std::ptr::copy_nonoverlapping;
+
+// This needs to be kept up-to-date!
+/// Error codes returned from the corosync libraries
+#[derive(Debug, Eq, PartialEq, Copy, Clone, TryFromPrimitive)]
+#[repr(u32)]
+pub enum CsError {
+    CsOk = 1,
+    CsErrLibrary = 2,
+    CsErrVersion = 3,
+    CsErrInit = 4,
+    CsErrTimeout = 5,
+    CsErrTryAgain = 6,
+    CsErrInvalidParam = 7,
+    CsErrNoMemory = 8,
+    CsErrBadHandle = 9,
+    CsErrBusy = 10,
+    CsErrAccess = 11,
+    CsErrNotExist = 12,
+    CsErrNameTooLong = 13,
+    CsErrExist = 14,
+    CsErrNoSpace = 15,
+    CsErrInterrupt = 16,
+    CsErrNameNotFound = 17,
+    CsErrNoResources = 18,
+    CsErrNotSupported = 19,
+    CsErrBadOperation = 20,
+    CsErrFailedOperation = 21,
+    CsErrMessageError = 22,
+    CsErrQueueFull = 23,
+    CsErrQueueNotAvailable = 24,
+    CsErrBadFlags = 25,
+    CsErrTooBig = 26,
+    CsErrNoSection = 27,
+    CsErrContextNotFound = 28,
+    CsErrTooManyGroups = 30,
+    CsErrSecurity = 100,
+    #[num_enum(default)]
+    CsErrRustCompat = 998, // Set if we get a unknown return from corosync
+    CsErrRustString = 999, // Set if we get a string conversion error
+}
+
+/// Result type returned from most corosync library calls.
+/// Contains a [CsError] and possibly other data as required
+pub type Result<T> = ::std::result::Result<T, CsError>;
+
+impl fmt::Display for CsError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            CsError::CsOk => write!(f, "OK"),
+            CsError::CsErrLibrary => write!(f, "ErrLibrary"),
+            CsError::CsErrVersion => write!(f, "ErrVersion"),
+            CsError::CsErrInit => write!(f, "ErrInit"),
+            CsError::CsErrTimeout => write!(f, "ErrTimeout"),
+            CsError::CsErrTryAgain => write!(f, "ErrTryAgain"),
+            CsError::CsErrInvalidParam => write!(f, "ErrInvalidParam"),
+            CsError::CsErrNoMemory => write!(f, "ErrNoMemory"),
+            CsError::CsErrBadHandle => write!(f, "ErrbadHandle"),
+            CsError::CsErrBusy => write!(f, "ErrBusy"),
+            CsError::CsErrAccess => write!(f, "ErrAccess"),
+            CsError::CsErrNotExist => write!(f, "ErrNotExist"),
+            CsError::CsErrNameTooLong => write!(f, "ErrNameTooLong"),
+            CsError::CsErrExist => write!(f, "ErrExist"),
+            CsError::CsErrNoSpace => write!(f, "ErrNoSpace"),
+            CsError::CsErrInterrupt => write!(f, "ErrInterrupt"),
+            CsError::CsErrNameNotFound => write!(f, "ErrNameNotFound"),
+            CsError::CsErrNoResources => write!(f, "ErrNoResources"),
+            CsError::CsErrNotSupported => write!(f, "ErrNotSupported"),
+            CsError::CsErrBadOperation => write!(f, "ErrBadOperation"),
+            CsError::CsErrFailedOperation => write!(f, "ErrFailedOperation"),
+            CsError::CsErrMessageError => write!(f, "ErrMEssageError"),
+            CsError::CsErrQueueFull => write!(f, "ErrQueueFull"),
+            CsError::CsErrQueueNotAvailable => write!(f, "ErrQueueNotAvailable"),
+            CsError::CsErrBadFlags => write!(f, "ErrBadFlags"),
+            CsError::CsErrTooBig => write!(f, "ErrTooBig"),
+            CsError::CsErrNoSection => write!(f, "ErrNoSection"),
+            CsError::CsErrContextNotFound => write!(f, "ErrContextNotFound"),
+            CsError::CsErrTooManyGroups => write!(f, "ErrTooManyGroups"),
+            CsError::CsErrSecurity => write!(f, "ErrSecurity"),
+            CsError::CsErrRustCompat => write!(f, "ErrRustCompat"),
+            CsError::CsErrRustString => write!(f, "ErrRustString"),
+        }
+    }
+}
+
+impl Error for CsError {}
+
+// This is dependant on the num_enum crate, converts a C cs_error_t into the Rust enum
+// There seems to be some debate as to whether this should be part of the language:
+// https://internals.rust-lang.org/t/pre-rfc-enum-from-integer/6348/25
+impl CsError {
+    fn from_c(cserr: u32) -> CsError {
+        match CsError::try_from(cserr) {
+            Ok(e) => e,
+            Err(_) => CsError::CsErrRustCompat,
+        }
+    }
+}
+
+/// Flags to use with dispatch functions, eg [cpg::dispatch]
+/// One will dispatch a single callback (blocking) and return.
+/// All will loop trying to dispatch all possible callbacks.
+/// Blocking is like All but will block between callbacks.
+/// OneNonBlocking will dispatch a single callback only if one is available,
+/// otherwise it will return even if no callback is available.
+#[derive(Copy, Clone)]
+// The numbers match the C enum, of course.
+pub enum DispatchFlags {
+    One = 1,
+    All = 2,
+    Blocking = 3,
+    OneNonblocking = 4,
+}
+
+/// Flags to use with (most) tracking API calls
+#[derive(Copy, Clone)]
+// Same here
+pub enum TrackFlags {
+    Current = 1,
+    Changes = 2,
+    ChangesOnly = 4,
+}
+
+/// A corosync nodeid
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub struct NodeId {
+    id: u32,
+}
+
+impl fmt::Display for NodeId {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self.id)
+    }
+}
+
+// Conversion from a NodeId to and from u32
+impl From<u32> for NodeId {
+    fn from(id: u32) -> NodeId {
+        NodeId { id }
+    }
+}
+
+impl From<NodeId> for u32 {
+    fn from(nodeid: NodeId) -> u32 {
+        nodeid.id
+    }
+}
+
+// General internal routine to copy bytes from a C array into a Rust String
+fn string_from_bytes(bytes: *const ::std::os::raw::c_char, max_length: usize) -> Result<String> {
+    let mut newbytes = vec![0u8; max_length];
+
+    // Get length of the string in old-fashioned style
+    let mut length: usize = 0;
+    let mut count = 0;
+    let mut tmpbytes = bytes;
+    while count < max_length || length == 0 {
+        if unsafe { *tmpbytes } == 0 && length == 0 {
+            length = count;
+            break;
+        }
+        count += 1;
+        tmpbytes = unsafe { tmpbytes.offset(1) }
+    }
+
+    // Cope with an empty string
+    if length == 0 {
+        return Ok(String::new());
+    }
+
+    unsafe {
+        // We need to fully copy it, not shallow copy it.
+        // Messy casting on both parts of the copy here to get it to work on both signed
+        // and unsigned char machines
+        copy_nonoverlapping(bytes as *mut i8, newbytes.as_mut_ptr() as *mut i8, length);
+    }
+
+    let cs = match CString::new(&newbytes[0..length]) {
+        Ok(c1) => c1,
+        Err(_) => return Err(CsError::CsErrRustString),
+    };
+
+    // This is just to convert the error type
+    match cs.into_string() {
+        Ok(s) => Ok(s),
+        Err(_) => Err(CsError::CsErrRustString),
+    }
+}
diff --git a/bindings/rust/src/quorum.rs b/bindings/rust/src/quorum.rs
new file mode 100644
index 0000000..25c2fe6
--- /dev/null
+++ b/bindings/rust/src/quorum.rs
@@ -0,0 +1,298 @@
+// libquorum interface for Rust
+// Copyright (c) 2021 Red Hat, Inc.
+//
+// All rights reserved.
+//
+// Author: Christine Caulfield (ccaulfi@redhat.com)
+//
+
+#![allow(clippy::type_complexity)]
+#![allow(clippy::needless_range_loop)]
+#![allow(clippy::single_match)]
+
+// For the code generated by bindgen
+use crate::sys::quorum as ffi;
+
+use crate::{CsError, DispatchFlags, NodeId, Result, TrackFlags};
+use std::collections::HashMap;
+use std::os::raw::{c_int, c_void};
+use std::slice;
+use std::sync::Mutex;
+
+/// Data for model1 [initialize]
+#[derive(Copy, Clone)]
+pub enum ModelData {
+    ModelNone,
+    ModelV1(Model1Data),
+}
+
+/// Value returned from [initialize]. Indicates whether quorum is currently active on this cluster.
+pub enum QuorumType {
+    Free,
+    Set,
+}
+
+/// Flags for [initialize], none currently supported
+#[derive(Copy, Clone)]
+pub enum Model1Flags {
+    None,
+}
+
+/// RingId returned in quorum_notification_fn
+pub struct RingId {
+    pub nodeid: NodeId,
+    pub seq: u64,
+}
+
+// Used to convert a QUORUM handle into one of ours
+lazy_static! {
+    static ref HANDLE_HASH: Mutex<HashMap<u64, Handle>> = Mutex::new(HashMap::new());
+}
+
+fn list_to_vec(list_entries: u32, list: *const u32) -> Vec<NodeId> {
+    let mut r_member_list = Vec::<NodeId>::new();
+    let temp_members: &[u32] = unsafe { slice::from_raw_parts(list, list_entries as usize) };
+    for i in 0..list_entries as usize {
+        r_member_list.push(NodeId::from(temp_members[i]));
+    }
+    r_member_list
+}
+
+// Called from quorum callback function - munge params back to Rust from C
+extern "C" fn rust_quorum_notification_fn(
+    handle: ffi::quorum_handle_t,
+    quorate: u32,
+    ring_id: ffi::quorum_ring_id,
+    member_list_entries: u32,
+    member_list: *const u32,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        let r_ring_id = RingId {
+            nodeid: NodeId::from(ring_id.nodeid),
+            seq: ring_id.seq,
+        };
+        let r_member_list = list_to_vec(member_list_entries, member_list);
+        let r_quorate = match quorate {
+            0 => false,
+            1 => true,
+            _ => false,
+        };
+        match &h.model_data {
+            ModelData::ModelV1(md) => {
+                if let Some(cb) = md.quorum_notification_fn {
+                    (cb)(h, r_quorate, r_ring_id, r_member_list);
+                }
+            }
+            _ => {}
+        }
+    }
+}
+
+extern "C" fn rust_nodelist_notification_fn(
+    handle: ffi::quorum_handle_t,
+    ring_id: ffi::quorum_ring_id,
+    member_list_entries: u32,
+    member_list: *const u32,
+    joined_list_entries: u32,
+    joined_list: *const u32,
+    left_list_entries: u32,
+    left_list: *const u32,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        let r_ring_id = RingId {
+            nodeid: NodeId::from(ring_id.nodeid),
+            seq: ring_id.seq,
+        };
+
+        let r_member_list = list_to_vec(member_list_entries, member_list);
+        let r_joined_list = list_to_vec(joined_list_entries, joined_list);
+        let r_left_list = list_to_vec(left_list_entries, left_list);
+
+        match &h.model_data {
+            ModelData::ModelV1(md) => {
+                if let Some(cb) = md.nodelist_notification_fn {
+                    (cb)(h, r_ring_id, r_member_list, r_joined_list, r_left_list);
+                }
+            }
+            _ => {}
+        }
+    }
+}
+
+#[derive(Copy, Clone)]
+/// Data for model1 [initialize]
+pub struct Model1Data {
+    pub flags: Model1Flags,
+    pub quorum_notification_fn:
+        Option<fn(hande: &Handle, quorate: bool, ring_id: RingId, member_list: Vec<NodeId>)>,
+    pub nodelist_notification_fn: Option<
+        fn(
+            hande: &Handle,
+            ring_id: RingId,
+            member_list: Vec<NodeId>,
+            joined_list: Vec<NodeId>,
+            left_list: Vec<NodeId>,
+        ),
+    >,
+}
+
+/// A handle into the quorum library. Returned from [initialize] and needed for all other calls
+#[derive(Copy, Clone)]
+pub struct Handle {
+    quorum_handle: u64,
+    model_data: ModelData,
+}
+
+/// Initialize a connection to the quorum library. You must call this before doing anything
+/// else and use the passed back [Handle].
+/// Remember to free the handle using [finalize] when finished.
+pub fn initialize(model_data: &ModelData, context: u64) -> Result<(Handle, QuorumType)> {
+    let mut handle: ffi::quorum_handle_t = 0;
+    let mut quorum_type: u32 = 0;
+
+    let mut m = match model_data {
+        ModelData::ModelV1(_v1) => ffi::quorum_model_v1_data_t {
+            model: ffi::QUORUM_MODEL_V1,
+            quorum_notify_fn: Some(rust_quorum_notification_fn),
+            nodelist_notify_fn: Some(rust_nodelist_notification_fn),
+        },
+        // Only V1 supported. No point in doing legacy stuff in a new binding
+        _ => return Err(CsError::CsErrInvalidParam),
+    };
+
+    handle = unsafe {
+        let c_context: *mut c_void = &mut &context as *mut _ as *mut c_void;
+        let c_model: *mut ffi::quorum_model_data_t =
+            &mut m as *mut _ as *mut ffi::quorum_model_data_t;
+        let res = ffi::quorum_model_initialize(
+            &mut handle,
+            m.model,
+            c_model,
+            &mut quorum_type,
+            c_context,
+        );
+
+        if res == ffi::CS_OK {
+            handle
+        } else {
+            return Err(CsError::from_c(res));
+        }
+    };
+
+    let quorum_type = match quorum_type {
+        0 => QuorumType::Free,
+        1 => QuorumType::Set,
+        _ => QuorumType::Set,
+    };
+    let rhandle = Handle {
+        quorum_handle: handle,
+        model_data: *model_data,
+    };
+    HANDLE_HASH.lock().unwrap().insert(handle, rhandle);
+    Ok((rhandle, quorum_type))
+}
+
+/// Finish with a connection to corosync
+pub fn finalize(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::quorum_finalize(handle.quorum_handle) };
+    if res == ffi::CS_OK {
+        HANDLE_HASH.lock().unwrap().remove(&handle.quorum_handle);
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+// Not sure if an FD is the right thing to return here, but it will do for now.
+/// Return a file descriptor to use for poll/select on the QUORUM handle
+pub fn fd_get(handle: Handle) -> Result<i32> {
+    let c_fd: *mut c_int = &mut 0 as *mut _ as *mut c_int;
+    let res = unsafe { ffi::quorum_fd_get(handle.quorum_handle, c_fd) };
+    if res == ffi::CS_OK {
+        Ok(c_fd as i32)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Display any/all active QUORUM callbacks for this [Handle], see [DispatchFlags] for details
+pub fn dispatch(handle: Handle, flags: DispatchFlags) -> Result<()> {
+    let res = unsafe { ffi::quorum_dispatch(handle.quorum_handle, flags as u32) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Return the quorate status of the cluster
+pub fn getquorate(handle: Handle) -> Result<bool> {
+    let c_quorate: *mut c_int = &mut 0 as *mut _ as *mut c_int;
+    let (res, r_quorate) = unsafe {
+        let res = ffi::quorum_getquorate(handle.quorum_handle, c_quorate);
+        let r_quorate: i32 = *c_quorate;
+        (res, r_quorate)
+    };
+    if res == ffi::CS_OK {
+        match r_quorate {
+            0 => Ok(false),
+            1 => Ok(true),
+            _ => Err(CsError::CsErrLibrary),
+        }
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Track node and quorum changes
+pub fn trackstart(handle: Handle, flags: TrackFlags) -> Result<()> {
+    let res = unsafe { ffi::quorum_trackstart(handle.quorum_handle, flags as u32) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Stop tracking node and quorum changes
+pub fn trackstop(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::quorum_trackstop(handle.quorum_handle) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the current 'context' value for this handle.
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source
+pub fn context_get(handle: Handle) -> Result<u64> {
+    let (res, context) = unsafe {
+        let mut context: u64 = 0;
+        let c_context: *mut c_void = &mut context as *mut _ as *mut c_void;
+        let r = ffi::quorum_context_get(handle.quorum_handle, c_context as *mut *const c_void);
+        (r, context)
+    };
+    if res == ffi::CS_OK {
+        Ok(context)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Set the current 'context' value for this handle.
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source.
+/// Normally this is set in [initialize], but this allows it to be changed
+pub fn context_set(handle: Handle, context: u64) -> Result<()> {
+    let res = unsafe {
+        let c_context = context as *mut c_void;
+        ffi::quorum_context_set(handle.quorum_handle, c_context)
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
diff --git a/bindings/rust/src/sys/mod.rs b/bindings/rust/src/sys/mod.rs
new file mode 100644
index 0000000..03dfec2
--- /dev/null
+++ b/bindings/rust/src/sys/mod.rs
@@ -0,0 +1,7 @@
+#![allow(non_camel_case_types, non_snake_case, dead_code, improper_ctypes)]
+
+pub mod cfg;
+pub mod cmap;
+pub mod cpg;
+pub mod quorum;
+pub mod votequorum;
diff --git a/bindings/rust/src/votequorum.rs b/bindings/rust/src/votequorum.rs
new file mode 100644
index 0000000..4718b58
--- /dev/null
+++ b/bindings/rust/src/votequorum.rs
@@ -0,0 +1,501 @@
+// libvotequorum interface for Rust
+// Copyright (c) 2021 Red Hat, Inc.
+//
+// All rights reserved.
+//
+// Author: Christine Caulfield (ccaulfi@redhat.com)
+//
+
+#![allow(clippy::type_complexity)]
+#![allow(clippy::needless_range_loop)]
+#![allow(clippy::single_match)]
+
+// For the code generated by bindgen
+use crate::sys::votequorum as ffi;
+
+use std::collections::HashMap;
+use std::ffi::CString;
+use std::fmt;
+use std::os::raw::{c_int, c_void};
+use std::slice;
+use std::sync::Mutex;
+
+use crate::string_from_bytes;
+use crate::{CsError, DispatchFlags, NodeId, Result, TrackFlags};
+
+/// RingId returned by votequorum_notification_fn
+pub struct RingId {
+    pub nodeid: NodeId,
+    pub seq: u64,
+}
+
+// Used to convert a VOTEQUORUM handle into one of ours
+lazy_static! {
+    static ref HANDLE_HASH: Mutex<HashMap<u64, Handle>> = Mutex::new(HashMap::new());
+}
+
+/// Current state of a node in the cluster, part of the [NodeInfo] and [Node] structs
+pub enum NodeState {
+    Member,
+    Dead,
+    Leaving,
+    Unknown,
+}
+impl NodeState {
+    pub fn new(state: u32) -> NodeState {
+        match state {
+            1 => NodeState::Member,
+            2 => NodeState::Dead,
+            3 => NodeState::Leaving,
+            _ => NodeState::Unknown,
+        }
+    }
+}
+impl fmt::Debug for NodeState {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            NodeState::Member => write!(f, "Member"),
+            NodeState::Dead => write!(f, "Dead"),
+            NodeState::Leaving => write!(f, "Leaving"),
+            _ => write!(f, "Unknown"),
+        }
+    }
+}
+
+/// Basic information about a node in the cluster. Contains [NodeId], and [NodeState]
+pub struct Node {
+    nodeid: NodeId,
+    state: NodeState,
+}
+impl fmt::Debug for Node {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "nodeid: {}, state: {:?}", self.nodeid, self.state)
+    }
+}
+
+bitflags! {
+/// Flags in the [NodeInfo] struct
+    pub struct NodeInfoFlags: u32
+    {
+    const VOTEQUORUM_INFO_TWONODE             = 1;
+    const VOTEQUORUM_INFO_QUORATE             = 2;
+    const VOTEQUORUM_INFO_WAIT_FOR_ALL        = 4;
+    const VOTEQUORUM_INFO_LAST_MAN_STANDING   = 8;
+    const VOTEQUORUM_INFO_AUTO_TIE_BREAKER    = 16;
+    const VOTEQUORUM_INFO_ALLOW_DOWNSCALE     = 32;
+    const VOTEQUORUM_INFO_QDEVICE_REGISTERED  = 64;
+    const VOTEQUORUM_INFO_QDEVICE_ALIVE       = 128;
+    const VOTEQUORUM_INFO_QDEVICE_CAST_VOTE   = 256;
+    const VOTEQUORUM_INFO_QDEVICE_MASTER_WINS = 512;
+    }
+}
+
+/// Detailed information about a node in the cluster, returned from [get_info]
+pub struct NodeInfo {
+    pub node_id: NodeId,
+    pub node_state: NodeState,
+    pub node_votes: u32,
+    pub node_expected_votes: u32,
+    pub highest_expected: u32,
+    pub quorum: u32,
+    pub flags: NodeInfoFlags,
+    pub qdevice_votes: u32,
+    pub qdevice_name: String,
+}
+
+// Turn a C nodeID list into a vec of NodeIds
+fn list_to_vec(list_entries: u32, list: *const u32) -> Vec<NodeId> {
+    let mut r_member_list = Vec::<NodeId>::new();
+    let temp_members: &[u32] = unsafe { slice::from_raw_parts(list, list_entries as usize) };
+    for i in 0..list_entries as usize {
+        r_member_list.push(NodeId::from(temp_members[i]));
+    }
+    r_member_list
+}
+
+// Called from votequorum callback function - munge params back to Rust from C
+extern "C" fn rust_expectedvotes_notification_fn(
+    handle: ffi::votequorum_handle_t,
+    context: u64,
+    expected_votes: u32,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        if let Some(cb) = h.callbacks.expectedvotes_notification_fn {
+            (cb)(h, context, expected_votes);
+        }
+    }
+}
+
+// Called from votequorum callback function - munge params back to Rust from C
+extern "C" fn rust_quorum_notification_fn(
+    handle: ffi::votequorum_handle_t,
+    context: u64,
+    quorate: u32,
+    node_list_entries: u32,
+    node_list: *mut ffi::votequorum_node_t,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        let r_quorate = match quorate {
+            0 => false,
+            1 => true,
+            _ => false,
+        };
+        let mut r_node_list = Vec::<Node>::new();
+        let temp_members: &[ffi::votequorum_node_t] =
+            unsafe { slice::from_raw_parts(node_list, node_list_entries as usize) };
+        for i in 0..node_list_entries as usize {
+            r_node_list.push(Node {
+                nodeid: NodeId::from(temp_members[i].nodeid),
+                state: NodeState::new(temp_members[i].state),
+            });
+        }
+        if let Some(cb) = h.callbacks.quorum_notification_fn {
+            (cb)(h, context, r_quorate, r_node_list);
+        }
+    }
+}
+
+// Called from votequorum callback function - munge params back to Rust from C
+extern "C" fn rust_nodelist_notification_fn(
+    handle: ffi::votequorum_handle_t,
+    context: u64,
+    ring_id: ffi::votequorum_ring_id_t,
+    node_list_entries: u32,
+    node_list: *mut u32,
+) {
+    if let Some(h) = HANDLE_HASH.lock().unwrap().get(&handle) {
+        let r_ring_id = RingId {
+            nodeid: NodeId::from(ring_id.nodeid),
+            seq: ring_id.seq,
+        };
+
+        let r_node_list = list_to_vec(node_list_entries, node_list);
+
+        if let Some(cb) = h.callbacks.nodelist_notification_fn {
+            (cb)(h, context, r_ring_id, r_node_list);
+        }
+    }
+}
+
+/// Callbacks that can be called from votequorum, pass these in to [initialize]
+#[derive(Copy, Clone)]
+pub struct Callbacks {
+    pub quorum_notification_fn:
+        Option<fn(hande: &Handle, context: u64, quorate: bool, node_list: Vec<Node>)>,
+    pub nodelist_notification_fn:
+        Option<fn(hande: &Handle, context: u64, ring_id: RingId, node_list: Vec<NodeId>)>,
+    pub expectedvotes_notification_fn:
+        Option<fn(handle: &Handle, context: u64, expected_votes: u32)>,
+}
+
+/// A handle into the votequorum library. Returned from [initialize] and needed for all other calls
+#[derive(Copy, Clone)]
+pub struct Handle {
+    votequorum_handle: u64,
+    callbacks: Callbacks,
+}
+
+/// Initialize a connection to the votequorum library. You must call this before doing anything
+/// else and use the passed back [Handle].
+/// Remember to free the handle using [finalize] when finished.
+pub fn initialize(callbacks: &Callbacks) -> Result<Handle> {
+    let mut handle: ffi::votequorum_handle_t = 0;
+
+    let mut c_callbacks = ffi::votequorum_callbacks_t {
+        votequorum_quorum_notify_fn: Some(rust_quorum_notification_fn),
+        votequorum_nodelist_notify_fn: Some(rust_nodelist_notification_fn),
+        votequorum_expectedvotes_notify_fn: Some(rust_expectedvotes_notification_fn),
+    };
+
+    unsafe {
+        let res = ffi::votequorum_initialize(&mut handle, &mut c_callbacks);
+        if res == ffi::CS_OK {
+            let rhandle = Handle {
+                votequorum_handle: handle,
+                callbacks: *callbacks,
+            };
+            HANDLE_HASH.lock().unwrap().insert(handle, rhandle);
+            Ok(rhandle)
+        } else {
+            Err(CsError::from_c(res))
+        }
+    }
+}
+
+/// Finish with a connection to corosync
+pub fn finalize(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::votequorum_finalize(handle.votequorum_handle) };
+    if res == ffi::CS_OK {
+        HANDLE_HASH
+            .lock()
+            .unwrap()
+            .remove(&handle.votequorum_handle);
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+// Not sure if an FD is the right thing to return here, but it will do for now.
+/// Return a file descriptor to use for poll/select on the VOTEQUORUM handle
+pub fn fd_get(handle: Handle) -> Result<i32> {
+    let c_fd: *mut c_int = &mut 0 as *mut _ as *mut c_int;
+    let res = unsafe { ffi::votequorum_fd_get(handle.votequorum_handle, c_fd) };
+    if res == ffi::CS_OK {
+        Ok(c_fd as i32)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+const VOTEQUORUM_QDEVICE_MAX_NAME_LEN: usize = 255;
+
+/// Returns detailed information about a node in a [NodeInfo] structure
+pub fn get_info(handle: Handle, nodeid: NodeId) -> Result<NodeInfo> {
+    let mut c_info = ffi::votequorum_info {
+        node_id: 0,
+        node_state: 0,
+        node_votes: 0,
+        node_expected_votes: 0,
+        highest_expected: 0,
+        total_votes: 0,
+        quorum: 0,
+        flags: 0,
+        qdevice_votes: 0,
+        qdevice_name: [0; 255usize],
+    };
+    let res = unsafe {
+        ffi::votequorum_getinfo(handle.votequorum_handle, u32::from(nodeid), &mut c_info)
+    };
+
+    if res == ffi::CS_OK {
+        let info = NodeInfo {
+            node_id: NodeId::from(c_info.node_id),
+            node_state: NodeState::new(c_info.node_state),
+            node_votes: c_info.node_votes,
+            node_expected_votes: c_info.node_expected_votes,
+            highest_expected: c_info.highest_expected,
+            quorum: c_info.quorum,
+            flags: NodeInfoFlags { bits: c_info.flags },
+            qdevice_votes: c_info.qdevice_votes,
+            qdevice_name: match string_from_bytes(
+                c_info.qdevice_name.as_ptr(),
+                VOTEQUORUM_QDEVICE_MAX_NAME_LEN,
+            ) {
+                Ok(s) => s,
+                Err(_) => String::new(),
+            },
+        };
+        Ok(info)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Call any/all active votequorum callbacks for this [Handle]. see [DispatchFlags] for details
+pub fn dispatch(handle: Handle, flags: DispatchFlags) -> Result<()> {
+    let res = unsafe { ffi::votequorum_dispatch(handle.votequorum_handle, flags as u32) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Track node and votequorum changes
+pub fn trackstart(handle: Handle, context: u64, flags: TrackFlags) -> Result<()> {
+    let res =
+        unsafe { ffi::votequorum_trackstart(handle.votequorum_handle, context, flags as u32) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Stop tracking node and votequorum changes
+pub fn trackstop(handle: Handle) -> Result<()> {
+    let res = unsafe { ffi::votequorum_trackstop(handle.votequorum_handle) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Get the current 'context' value for this handle.
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source
+pub fn context_get(handle: Handle) -> Result<u64> {
+    let (res, context) = unsafe {
+        let mut c_context: *mut c_void = &mut 0u64 as *mut _ as *mut c_void;
+        let r = ffi::votequorum_context_get(handle.votequorum_handle, &mut c_context);
+        let context: u64 = c_context as u64;
+        (r, context)
+    };
+    if res == ffi::CS_OK {
+        Ok(context)
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Set the current 'context' value for this handle.
+/// The context value is an arbitrary value that is always passed
+/// back to callbacks to help identify the source.
+/// Normally this is set in [trackstart], but this allows it to be changed
+pub fn context_set(handle: Handle, context: u64) -> Result<()> {
+    let res = unsafe {
+        let c_context = context as *mut c_void;
+        ffi::votequorum_context_set(handle.votequorum_handle, c_context)
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Set the current expected_votes for the cluster, this value must
+/// be valid and not result in an inquorate cluster.
+pub fn set_expected(handle: Handle, expected_votes: u32) -> Result<()> {
+    let res = unsafe { ffi::votequorum_setexpected(handle.votequorum_handle, expected_votes) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Set the current votes for a node
+pub fn set_votes(handle: Handle, nodeid: NodeId, votes: u32) -> Result<()> {
+    let res =
+        unsafe { ffi::votequorum_setvotes(handle.votequorum_handle, u32::from(nodeid), votes) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Register a quorum device
+pub fn qdevice_register(handle: Handle, name: &str) -> Result<()> {
+    let c_string = {
+        match CString::new(name) {
+            Ok(cs) => cs,
+            Err(_) => return Err(CsError::CsErrInvalidParam),
+        }
+    };
+
+    let res =
+        unsafe { ffi::votequorum_qdevice_register(handle.votequorum_handle, c_string.as_ptr()) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Unregister a quorum device
+pub fn qdevice_unregister(handle: Handle, name: &str) -> Result<()> {
+    let c_string = {
+        match CString::new(name) {
+            Ok(cs) => cs,
+            Err(_) => return Err(CsError::CsErrInvalidParam),
+        }
+    };
+
+    let res =
+        unsafe { ffi::votequorum_qdevice_unregister(handle.votequorum_handle, c_string.as_ptr()) };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Update the name of a quorum device
+pub fn qdevice_update(handle: Handle, oldname: &str, newname: &str) -> Result<()> {
+    let on_string = {
+        match CString::new(oldname) {
+            Ok(cs) => cs,
+            Err(_) => return Err(CsError::CsErrInvalidParam),
+        }
+    };
+    let nn_string = {
+        match CString::new(newname) {
+            Ok(cs) => cs,
+            Err(_) => return Err(CsError::CsErrInvalidParam),
+        }
+    };
+
+    let res = unsafe {
+        ffi::votequorum_qdevice_update(
+            handle.votequorum_handle,
+            on_string.as_ptr(),
+            nn_string.as_ptr(),
+        )
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Poll a quorum device
+/// This must be done more often than the qdevice timeout (default 10s) while the device is active
+/// and the [RingId] must match the current value returned from the callbacks for it to be accepted.
+pub fn qdevice_poll(handle: Handle, name: &str, cast_vote: bool, ring_id: &RingId) -> Result<()> {
+    let c_string = {
+        match CString::new(name) {
+            Ok(cs) => cs,
+            Err(_) => return Err(CsError::CsErrInvalidParam),
+        }
+    };
+
+    let c_cast_vote: u32 = u32::from(cast_vote);
+    let c_ring_id = ffi::votequorum_ring_id_t {
+        nodeid: u32::from(ring_id.nodeid),
+        seq: ring_id.seq,
+    };
+
+    let res = unsafe {
+        ffi::votequorum_qdevice_poll(
+            handle.votequorum_handle,
+            c_string.as_ptr(),
+            c_cast_vote,
+            c_ring_id,
+        )
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}
+
+/// Allow qdevice to tell votequorum if master_wins can be enabled or not
+pub fn qdevice_master_wins(handle: Handle, name: &str, master_wins: bool) -> Result<()> {
+    let c_string = {
+        match CString::new(name) {
+            Ok(cs) => cs,
+            Err(_) => return Err(CsError::CsErrInvalidParam),
+        }
+    };
+
+    let c_master_wins: u32 = u32::from(master_wins);
+
+    let res = unsafe {
+        ffi::votequorum_qdevice_master_wins(
+            handle.votequorum_handle,
+            c_string.as_ptr(),
+            c_master_wins,
+        )
+    };
+    if res == ffi::CS_OK {
+        Ok(())
+    } else {
+        Err(CsError::from_c(res))
+    }
+}