From 136bb454d98a9032843259e71f12d8e33cd90f27 Mon Sep 17 00:00:00 2001
From: arcnmx <arcnmx@users.noreply.github.com>
Date: Mon, 25 Jan 2016 21:57:17 -0500
Subject: Errno::result()

---
 src/mqueue.rs | 33 ++++++++-------------------------
 1 file changed, 8 insertions(+), 25 deletions(-)

(limited to 'src/mqueue.rs')

diff --git a/src/mqueue.rs b/src/mqueue.rs
index e24b6800..1625d4ef 100644
--- a/src/mqueue.rs
+++ b/src/mqueue.rs
@@ -2,8 +2,7 @@
 //!
 //! [Further reading and details on the C API](http://man7.org/linux/man-pages/man7/mq_overview.7.html)
 
-use {Error, Result, from_ffi};
-use errno::Errno;
+use errno::{Errno, Result};
 
 use libc::{c_int, c_long, c_char, size_t, mode_t, strlen};
 use std::ffi::CString;
@@ -80,21 +79,17 @@ impl MqAttr {
 pub fn mq_open(name: &CString, oflag: MQ_OFlag, mode: Mode, attr: &MqAttr) -> Result<MQd> {
     let res = unsafe { ffi::mq_open(name.as_ptr(), oflag.bits(), mode.bits() as mode_t, attr as *const MqAttr) };
 
-    if res < 0 {
-        return Err(Error::Sys(Errno::last()));
-    }
-
-    Ok(res)
+    Errno::result(res)
 }
 
 pub fn mq_unlink(name: &CString) -> Result<()> {
     let res = unsafe { ffi::mq_unlink(name.as_ptr()) };
-    from_ffi(res)
+    Errno::result(res).map(drop)
 }
 
 pub fn mq_close(mqdes: MQd) -> Result<()>  {
     let res = unsafe { ffi::mq_close(mqdes) };
-    from_ffi(res)
+    Errno::result(res).map(drop)
 }
 
 
@@ -102,30 +97,20 @@ pub fn mq_receive(mqdes: MQd, message: &mut [u8], msq_prio: u32) -> Result<usize
     let len = message.len() as size_t;
     let res = unsafe { ffi::mq_receive(mqdes, message.as_mut_ptr() as *mut c_char, len, &msq_prio) };
 
-    if res < 0 {
-        return Err(Error::Sys(Errno::last()));
-    }
-
-    Ok(res as usize)
+    Errno::result(res).map(|r| r as usize)
 }
 
 pub fn mq_send(mqdes: MQd, message: &CString, msq_prio: u32) -> Result<usize> {
     let len = unsafe { strlen(message.as_ptr()) as size_t };
     let res = unsafe { ffi::mq_send(mqdes, message.as_ptr(), len, msq_prio) };
 
-    if res < 0 {
-        return Err(Error::Sys(Errno::last()));
-    }
-
-    Ok(res as usize)
+    Errno::result(res).map(|r| r as usize)
 }
 
 pub fn mq_getattr(mqd: MQd) -> Result<MqAttr> {
     let mut attr = MqAttr::new(0, 0, 0, 0);
     let res = unsafe { ffi::mq_getattr(mqd, &mut attr) };
-    if res < 0 {
-        return Err(Error::Sys(Errno::last()));
-    }
+    try!(Errno::result(res));
     Ok(attr)
 }
 
@@ -137,9 +122,7 @@ pub fn mq_getattr(mqd: MQd) -> Result<MqAttr> {
 pub fn mq_setattr(mqd: MQd, newattr: &MqAttr) -> Result<MqAttr> {
     let mut attr = MqAttr::new(0, 0, 0, 0);
     let res = unsafe { ffi::mq_setattr(mqd, newattr as *const MqAttr, &mut attr) };
-    if res < 0 {
-        return Err(Error::Sys(Errno::last()));
-    }
+    try!(Errno::result(res));
     Ok(attr)
 }
 
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