Auto merge of #475 - asomers:timespec, r=fiveop

Timespec

Make TimeVal an opaque Newtype, and add another Newtype for Timespec.

CHANGELOG.md

@@ -6,6 +6,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased]
 
 ### Added
+- Added struct `TimeSpec`
+  ([#475](https://github.com/nix-rust/nix/pull/475))
 - Added complete definitions for all kqueue-related constants on all supported
   OSes
   ([#415](https://github.com/nix-rust/nix/pull/415))
@@ -22,6 +24,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   ([#457](https://github.com/nix-rust/nix/pull/457))
 
 ### Changed
+- Changed `TimeVal` into an opaque Newtype
+  ([#475](https://github.com/nix-rust/nix/pull/475))
 - `kill`'s signature, defined in `::nix::sys::signal`, changed, so that the
   signal parameter has type `T: Into<Option<Signal>>`. `None` as an argument
   for that parameter will result in a 0 passed to libc's `kill`, while a

src/sys/select.rs

@@ -1,6 +1,6 @@
 use std::ptr::null_mut;
 use std::os::unix::io::RawFd;
-use libc::c_int;
+use libc::{c_int, timeval};
 use {Errno, Result};
 use sys::time::TimeVal;
 
@@ -56,16 +56,15 @@ impl FdSet {
 }
 
 mod ffi {
-    use libc::c_int;
-    use sys::time::TimeVal;
+    use libc::{c_int, timeval};
     use super::FdSet;
 
     extern {
         pub fn select(nfds: c_int,
                       readfds: *mut FdSet,
                       writefds: *mut FdSet,
                       errorfds: *mut FdSet,
-                      timeout: *mut TimeVal) -> c_int;
+                      timeout: *mut timeval) -> c_int;
     }
 }
 
@@ -77,7 +76,8 @@ pub fn select(nfds: c_int,
     let readfds = readfds.map(|set| set as *mut FdSet).unwrap_or(null_mut());
     let writefds = writefds.map(|set| set as *mut FdSet).unwrap_or(null_mut());
     let errorfds = errorfds.map(|set| set as *mut FdSet).unwrap_or(null_mut());
-    let timeout = timeout.map(|tv| tv as *mut TimeVal).unwrap_or(null_mut());
+    let timeout = timeout.map(|tv| tv as *mut TimeVal as *mut timeval)
+                         .unwrap_or(null_mut());
 
     let res = unsafe {
         ffi::select(nfds, readfds, writefds, errorfds, timeout)