Disable lio_listio on apple, because it doesn't seem to work

src/errno.rs

@@ -930,7 +930,7 @@ mod consts {
     pub fn from_i32(e: i32) -> Errno {
         use self::Errno::*;
 
-        let errno = match e {
+        match e {
             0   => UnknownErrno,
             1   => EPERM,
             2   => ENOENT,
@@ -1039,11 +1039,7 @@ mod consts {
             105 => EOWNERDEAD,
             106 => EQFULL,
             _   => UnknownErrno,
-        };
-        if errno == UnknownErrno {
-            println!("Something returned unknown errno {:?}", e);
         }
-        errno
     }
 }
 

src/sys/aio.rs

@@ -230,6 +230,7 @@ pub fn aio_write(aiocb: &mut AioCb) -> Result<()> {
 
 /// Submits multiple asynchronous I/O requests with a single system call.  The
 /// order in which the requests are carried out is not specified.
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
 pub fn lio_listio(mode: LioMode, list: &[&mut AioCb],
                   sigev_notify: SigevNotify) -> Result<()> {
     let sigev = SigEvent::new(sigev_notify);
@@ -241,8 +242,6 @@ pub fn lio_listio(mode: LioMode, list: &[&mut AioCb],
     };
     let p = plist as *const *mut libc::aiocb;
     Errno::result(unsafe {
-        let err = libc::lio_listio(mode as i32, p, list.len() as i32, sigevp);
-        println!("lio_listio returned {:?}", err);
-        err
+        libc::lio_listio(mode as i32, p, list.len() as i32, sigevp)
     }).map(drop)
 }

test/sys/test_aio.rs

@@ -230,6 +230,7 @@ fn test_aio_write_sigev_signal() {
 // Test lio_listio with LIO_WAIT, so all AIO ops should be complete by the time
 // lio_listio returns.
 #[test]
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
 fn test_lio_listio_wait() {
     const INITIAL: &'static [u8] = b"abcdef123456";
     const WBUF: &'static [u8] = b"CDEF";
@@ -274,6 +275,7 @@ fn test_lio_listio_wait() {
 // Test lio_listio with LIO_NOWAIT and no SigEvent, so we must use some other
 // mechanism to check for the individual AioCb's completion.
 #[test]
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
 fn test_lio_listio_nowait() {
     const INITIAL: &'static [u8] = b"abcdef123456";
     const WBUF: &'static [u8] = b"CDEF";
@@ -320,6 +322,7 @@ fn test_lio_listio_nowait() {
 // Test lio_listio with LIO_NOWAIT and a SigEvent to indicate when all AioCb's
 // are complete.
 #[test]
+#[cfg(not(any(target_os = "ios", target_os = "macos")))]
 fn test_lio_listio_signal() {
     const INITIAL: &'static [u8] = b"abcdef123456";
     const WBUF: &'static [u8] = b"CDEF";