From 819f0e9196d4ea1be81a33ec6d2b5ed8294dfaa0 Mon Sep 17 00:00:00 2001
From: Utkarsh Kukreti <utkarshkukreti@gmail.com>
Date: Mon, 19 Jan 2015 16:12:45 +0530
Subject: Add `ioctl`. Only supports the `TIOCGWINSZ` request right now.

---
 src/sys/ioctl.rs | 44 ++++++++++++++++++++++++++++++++++++++++++++
 src/sys/mod.rs   |  2 ++
 2 files changed, 46 insertions(+)
 create mode 100644 src/sys/ioctl.rs

diff --git a/src/sys/ioctl.rs b/src/sys/ioctl.rs
new file mode 100644
index 00000000..9cb47bda
--- /dev/null
+++ b/src/sys/ioctl.rs
@@ -0,0 +1,44 @@
+use libc;
+use errno::{SysResult, from_ffi};
+use fcntl::Fd;
+
+pub use self::ffi::Winsize;
+pub use self::IoctlArg::*;
+
+mod ffi {
+    use libc::c_ushort;
+
+    #[derive(Copy, Show)]
+    pub struct Winsize {
+        pub ws_row: c_ushort,
+        pub ws_col: c_ushort,
+        pub ws_xpixel: c_ushort,
+        pub ws_ypixel: c_ushort,
+    }
+
+    #[cfg(target_os = "macos")]
+    pub mod os {
+        use libc::c_ulong;
+        pub const TIOCGWINSZ: c_ulong = 0x40087468;
+    }
+
+    #[cfg(target_os = "linux")]
+    pub mod os {
+        use libc::c_int;
+        pub const TIOCGWINSZ: c_int = 0x5413;
+    }
+}
+
+pub enum IoctlArg<'a> {
+    TIOCGWINSZ(&'a mut Winsize)
+}
+
+pub fn ioctl(fd: Fd, arg: IoctlArg) -> SysResult<()> {
+    match arg {
+        TIOCGWINSZ(&mut ref winsize) => {
+            from_ffi(unsafe {
+                libc::funcs::bsd44::ioctl(fd, ffi::os::TIOCGWINSZ, winsize)
+            })
+        }
+    }
+}
diff --git a/src/sys/mod.rs b/src/sys/mod.rs
index cd87124a..56104834 100644
--- a/src/sys/mod.rs
+++ b/src/sys/mod.rs
@@ -8,6 +8,8 @@ pub mod event;
 #[cfg(target_os = "linux")]
 pub mod eventfd;
 
+pub mod ioctl;
+
 pub mod signal;
 
 pub mod socket;
-- 
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