Fix deprecation warnings

Author: carllerche

src/errno.rs

@@ -1,9 +1,52 @@
-use std::os::errno;
+use libc::c_int;
 use std::num::from_i32;
 
 pub use self::consts::*;
 pub use self::consts::Errno::*;
 
+/// Returns the platform-specific value of errno
+pub fn errno() -> i32 {
+    #[cfg(any(target_os = "macos",
+              target_os = "ios",
+              target_os = "freebsd"))]
+    unsafe fn errno_location() -> *const c_int {
+        extern { fn __error() -> *const c_int; }
+        __error()
+    }
+
+    #[cfg(target_os = "bitrig")]
+    fn errno_location() -> *const c_int {
+        extern {
+            fn __errno() -> *const c_int;
+        }
+        unsafe {
+            __errno()
+        }
+    }
+
+    #[cfg(target_os = "dragonfly")]
+    unsafe fn errno_location() -> *const c_int {
+        extern { fn __dfly_error() -> *const c_int; }
+        __dfly_error()
+    }
+
+    #[cfg(target_os = "openbsd")]
+    unsafe fn errno_location() -> *const c_int {
+        extern { fn __errno() -> *const c_int; }
+        __errno()
+    }
+
+    #[cfg(any(target_os = "linux", target_os = "android"))]
+    unsafe fn errno_location() -> *const c_int {
+        extern { fn __errno_location() -> *const c_int; }
+        __errno_location()
+    }
+
+    unsafe {
+        (*errno_location()) as i32
+    }
+}
+
 macro_rules! impl_errno {
     ($errno:ty) => {
         impl $errno {

src/lib.rs

@@ -4,7 +4,7 @@
 //! defined in.
 #![crate_name = "nix"]
 
-#![feature(collections, core, net, linkage, libc, os, path, std_misc)]
+#![feature(collections, core, net, linkage, libc, std_misc)]
 #![allow(non_camel_case_types)]
 
 #[macro_use]

src/sched.rs

@@ -49,8 +49,8 @@ mod cpuset_attribs {
 #[cfg(all(target_arch = "x86", target_os = "linux"))]
 mod cpuset_attribs {
     use super::CpuMask;
-    pub const CPU_SETSIZE:           usize = 1024us;
-    pub const CPU_MASK_BITS:         usize = 32us;
+    pub const CPU_SETSIZE:           usize = 1024;
+    pub const CPU_MASK_BITS:         usize = 32;
 
     #[inline]
     pub fn set_cpu_mask_flag(cur: CpuMask, bit: usize) -> CpuMask {

test/test.rs

@@ -1,4 +1,4 @@
-#![feature(core, libc, net, path, std_misc)]
+#![feature(core, libc, net, std_misc)]
 
 extern crate nix;
 extern crate libc;